New directory structure for libghettocrypt
This commit is contained in:
Leonetienne
parent
9772c5fcf8
commit
ae276e49af
2
ExampleApp/.gitignore
vendored
2
ExampleApp/.gitignore
vendored
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/main.cpp.crypt
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/main.cpp.clear
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46
GhettoCrypt/CMakeLists.txt
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46
GhettoCrypt/CMakeLists.txt
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cmake_minimum_required(VERSION 3.16)
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project(GCrypt)
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###################
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# Library project #
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###################
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set(CMAKE_CXX_STANDARD 17)
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FILE(GLOB main_src src/*.cpp)
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add_library(${PROJECT_NAME}
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${main_src}
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)
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target_include_directories(${PROJECT_NAME} PRIVATE
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include
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)
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#########
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# Tests #
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#########
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FILE(GLOB test_src test/*.cpp)
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add_executable(test
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test/Catch2.h
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${test_src}
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)
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target_link_libraries(test ${PROJECT_NAME})
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target_include_directories(test PRIVATE
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include
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)
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##############
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# Executable #
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##############
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FILE(GLOB exec_src exec/*.cpp)
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add_executable(exec
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${exec_src}
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)
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target_link_libraries(exec ${PROJECT_NAME})
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target_include_directories(exec PRIVATE
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include
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${eule_include}
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)
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#pragma once
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#include "Feistel.h"
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#include "Flexblock.h"
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namespace GhettoCipher
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{
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/** Class to apply a block cipher to messages of arbitrary length in a distributed manner
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*/
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class Cipher
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{
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public:
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explicit Cipher(const Block& key);
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explicit Cipher(const std::string& password);
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Cipher(const Cipher& other) = delete;
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Cipher(Cipher&& other) noexcept = delete;
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~Cipher();
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//! Will set the key
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void SetKey(const Block& key);
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//! Will set the key from a password
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void SetPassword(const std::string& password);
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//! Will encipher a flexblock of data
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Flexblock Encipher(const Flexblock& data, bool printProgress = false) const;
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//! Will decipher a flexblock of data
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Flexblock Decipher(const Flexblock& data, bool printProgress = false) const;
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private:
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Block key;
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//! Will zero the memory used by the key
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void ZeroKeyMemory();
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// Initial value for cipher block chaining
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Block initializationVector;
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};
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}
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#pragma once
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#include <cstddef>
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namespace GhettoCipher
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{
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// MUST BE A POWER OF 2 > 4
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constexpr std::size_t BLOCK_SIZE = 512;
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// MUST BE > 2
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constexpr std::size_t N_ROUNDS = 64;
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}
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40
GhettoCrypt/include/Cipher.h
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40
GhettoCrypt/include/Cipher.h
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#pragma once
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#include "Feistel.h"
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#include "Flexblock.h"
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namespace GhettoCipher {
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/** Class to apply a block cipher to messages of arbitrary length in a distributed manner
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*/
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class Cipher {
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public:
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explicit Cipher(const Block& key);
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explicit Cipher(const std::string& password);
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Cipher(const Cipher& other) = delete;
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Cipher(Cipher&& other) noexcept = delete;
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~Cipher();
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//! Will set the key
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void SetKey(const Block& key);
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//! Will set the key from a password
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void SetPassword(const std::string& password);
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//! Will encipher a flexblock of data
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Flexblock Encipher(const Flexblock& data, bool printProgress = false) const;
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//! Will decipher a flexblock of data
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Flexblock Decipher(const Flexblock& data, bool printProgress = false) const;
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private:
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Block key;
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//! Will zero the memory used by the key
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void ZeroKeyMemory();
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// Initial value for cipher block chaining
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Block initializationVector;
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};
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}
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11
GhettoCrypt/include/Config.h
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11
GhettoCrypt/include/Config.h
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#pragma once
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#include <cstddef>
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namespace GhettoCipher {
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// MUST BE A POWER OF 2 > 4
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constexpr std::size_t BLOCK_SIZE = 512;
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// MUST BE > 2
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constexpr std::size_t N_ROUNDS = 64;
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}
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17965
GhettoCrypt/test/Catch2.h
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17965
GhettoCrypt/test/Catch2.h
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File diff suppressed because it is too large
Load Diff
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Before Width: | Height: | Size: 9.5 KiB After Width: | Height: | Size: 9.5 KiB |
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/*
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* BSD 2-Clause License
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*
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* Copyright (c) 2021, Leon Etienne
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "GhettoCrypt.h"
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/*** ./../GhettoCrypt/Cipher.cpp ***/
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#include <iostream>
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#include <vector>
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GhettoCipher::Cipher::Cipher(const Block& key)
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:
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key { key },
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initializationVector(InitializationVector(key))
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{
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return;
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}
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GhettoCipher::Cipher::Cipher(const std::string& password)
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:
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key { PasswordToKey(password) },
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initializationVector(InitializationVector(key))
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{
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return;
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}
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GhettoCipher::Cipher::~Cipher()
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{
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// Clear key memory
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ZeroKeyMemory();
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return;
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}
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void GhettoCipher::Cipher::SetKey(const Block& key)
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{
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ZeroKeyMemory();
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this->key = key;
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return;
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}
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void GhettoCipher::Cipher::SetPassword(const std::string& password)
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{
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ZeroKeyMemory();
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key = PasswordToKey(password);
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return;
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}
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GhettoCipher::Flexblock GhettoCipher::Cipher::Encipher(const Flexblock& data, bool printProgress) const
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{
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// Split cleartext into blocks
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std::vector<Block> blocks;
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for (std::size_t i = 0; i < data.size(); i += BLOCK_SIZE)
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blocks.push_back(Block(
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PadStringToLength(data.substr(i, BLOCK_SIZE), BLOCK_SIZE, '0', false))
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);
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// Encrypt individual blocks using cipher block chaining
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Feistel feistel(key);
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for (std::size_t i = 0; i < blocks.size(); i++)
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{
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// Print reports if desired. If we have > 1000 blocks, print one report every 100 blocks. Otherwise for every 10th block.
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if ((i % ((blocks.size() > 1000)? 100 : 10) == 0) && (printProgress))
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std::cout << "Encrypting... (Block " << i << " / " << blocks.size() << " - " << ((float)i*100 / blocks.size()) << "%)" << std::endl;
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const Block& lastBlock = (i>0) ? blocks[i-1] : initializationVector;
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blocks[i] = feistel.Encipher(blocks[i] ^ lastBlock); // Xor last cipher block with new clear text block before E()
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}
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// Concatenate ciphertext blocks back into a flexblock
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std::stringstream ss;
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for (Block& b : blocks)
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ss << b;
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// Return it
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return ss.str();
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}
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GhettoCipher::Flexblock GhettoCipher::Cipher::Decipher(const Flexblock& data, bool printProgress) const
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{
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// Split ciphertext into blocks
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std::vector<Block> blocks;
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for (std::size_t i = 0; i < data.size(); i += BLOCK_SIZE)
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blocks.push_back(Block(
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PadStringToLength(data.substr(i, BLOCK_SIZE), BLOCK_SIZE, '0', false))
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);
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// Decrypt individual blocks
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Feistel feistel(key);
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// We can't do this in-loop for decryption, because we are decrypting the blocks in-place.
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Block lastBlock = initializationVector;
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for (std::size_t i = 0; i < blocks.size(); i++)
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{
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// Print reports if desired. If we have > 1000 blocks, print one report every 100 blocks. Otherwise for every 10th block.
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if ((i % ((blocks.size() > 1000) ? 100 : 10) == 0) && (printProgress))
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std::cout << "Decrypting... (Block " << i << " / " << blocks.size() << " - " << ((float)i*100/ blocks.size()) << "%)" << std::endl;
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Block tmpCopy = blocks[i];
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blocks[i] = feistel.Decipher(blocks[i]) ^ lastBlock; // Decipher cipher block [i] and then xor it with the last cipher block [i-1] we've had
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lastBlock = std::move(tmpCopy);
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}
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// Concatenate ciphertext blocks back into a flexblock
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std::stringstream ss;
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for (Block& b : blocks)
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ss << b;
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// Return it
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return ss.str();
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}
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// These pragmas only work for MSVC and g++, as far as i know. Beware!!!
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#if defined _WIN32 || defined _WIN64
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#pragma optimize("", off )
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#elif defined __GNUG__
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#pragma GCC push_options
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#pragma GCC optimize ("O0")
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#endif
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void GhettoCipher::Cipher::ZeroKeyMemory()
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{
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key.reset();
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return;
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}
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#if defined _WIN32 || defined _WIN64
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#pragma optimize("", on )
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#elif defined __GNUG__
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#pragma GCC pop_options
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#endif
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/*** ./../GhettoCrypt/Feistel.cpp ***/
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#include <unordered_map>
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GhettoCipher::Feistel::Feistel(const Block& key)
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{
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SetKey(key);
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return;
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}
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GhettoCipher::Feistel::~Feistel()
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{
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ZeroKeyMemory();
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return;
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}
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void GhettoCipher::Feistel::SetKey(const Block& key)
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{
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GenerateRoundKeys(key);
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return;
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}
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GhettoCipher::Block GhettoCipher::Feistel::Encipher(const Block& data)
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{
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return Run(data, false);
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}
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GhettoCipher::Block GhettoCipher::Feistel::Decipher(const Block& data)
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{
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return Run(data, true);
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}
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GhettoCipher::Block GhettoCipher::Feistel::Run(const Block& data, bool reverseKeys)
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{
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const auto splitData = FeistelSplit(data);
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GhettoCipher::Halfblock l = splitData.first;
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GhettoCipher::Halfblock r = splitData.second;
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Halfblock tmp;
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for (std::size_t i = 0; i < N_ROUNDS; i++)
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{
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// Calculate key index
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std::size_t keyIndex;
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if (reverseKeys)
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keyIndex = N_ROUNDS - i - 1;
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else
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keyIndex = i;
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// Do a feistel round
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tmp = r;
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r = l ^ F(r, roundKeys[keyIndex]);
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l = tmp;
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}
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// Block has finished de*ciphering.
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// Let's generate a new set of round keys.
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GenerateRoundKeys((Block)roundKeys.back());
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return FeistelCombine(r, l);
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}
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GhettoCipher::Halfblock GhettoCipher::Feistel::F(Halfblock m, const Block& key)
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{
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// Made-up F function
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// Expand to full bitwidth
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Block m_expanded = ExpansionFunction(m);
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// Shift to left by 1
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m_expanded = Shiftl(m_expanded, 1);
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// Xor with key
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m_expanded ^= key;
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// Non-linearly apply subsitution boxes
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std::stringstream ss;
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const std::string m_str = m_expanded.to_string();
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for (std::size_t i = 0; i < BLOCK_SIZE; i += 4)
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{
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ss << SBox(m_str.substr(i, 4));
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}
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m_expanded = Block(ss.str());
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// Return the compressed version
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return CompressionFunction(m_expanded);
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}
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|
||||||
std::pair<GhettoCipher::Halfblock, GhettoCipher::Halfblock> GhettoCipher::Feistel::FeistelSplit(const Block& block)
|
|
||||||
{
|
|
||||||
const std::string bits = block.to_string();
|
|
||||||
|
|
||||||
Halfblock l(bits.substr(0, bits.size() / 2));
|
|
||||||
Halfblock r(bits.substr(bits.size() / 2));
|
|
||||||
|
|
||||||
return std::make_pair(l, r);
|
|
||||||
}
|
|
||||||
|
|
||||||
GhettoCipher::Block GhettoCipher::Feistel::FeistelCombine(const Halfblock& l, const Halfblock& r)
|
|
||||||
{
|
|
||||||
return Block(l.to_string() + r.to_string());
|
|
||||||
}
|
|
||||||
|
|
||||||
GhettoCipher::Block GhettoCipher::Feistel::ExpansionFunction(const Halfblock& block)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string bits = block.to_string();
|
|
||||||
|
|
||||||
std::unordered_map<std::string, std::string> expansionMap;
|
|
||||||
expansionMap["00"] = "1101";
|
|
||||||
expansionMap["01"] = "1000";
|
|
||||||
expansionMap["10"] = "0010";
|
|
||||||
expansionMap["11"] = "0111";
|
|
||||||
|
|
||||||
// We have to double the bits!
|
|
||||||
for (std::size_t i = 0; i < HALFBLOCK_SIZE; i += 2)
|
|
||||||
{
|
|
||||||
const std::string sub = bits.substr(i, 2);
|
|
||||||
ss << expansionMap[sub];
|
|
||||||
}
|
|
||||||
|
|
||||||
return Block(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
GhettoCipher::Halfblock GhettoCipher::Feistel::CompressionFunction(const Block& block)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string bits = block.to_string();
|
|
||||||
|
|
||||||
std::unordered_map<std::string, std::string> compressionMap;
|
|
||||||
compressionMap["0000"] = "10";
|
|
||||||
compressionMap["0001"] = "01";
|
|
||||||
compressionMap["0010"] = "10";
|
|
||||||
compressionMap["0011"] = "10";
|
|
||||||
compressionMap["0100"] = "11";
|
|
||||||
compressionMap["0101"] = "01";
|
|
||||||
compressionMap["0110"] = "00";
|
|
||||||
compressionMap["0111"] = "11";
|
|
||||||
compressionMap["1000"] = "01";
|
|
||||||
compressionMap["1001"] = "00";
|
|
||||||
compressionMap["1010"] = "11";
|
|
||||||
compressionMap["1011"] = "00";
|
|
||||||
compressionMap["1100"] = "11";
|
|
||||||
compressionMap["1101"] = "10";
|
|
||||||
compressionMap["1110"] = "00";
|
|
||||||
compressionMap["1111"] = "01";
|
|
||||||
|
|
||||||
// We have to half the bits!
|
|
||||||
for (std::size_t i = 0; i < BLOCK_SIZE; i += 4)
|
|
||||||
{
|
|
||||||
const std::string sub = bits.substr(i, 4);
|
|
||||||
ss << compressionMap[sub];
|
|
||||||
}
|
|
||||||
|
|
||||||
return Halfblock(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
std::string GhettoCipher::Feistel::SBox(const std::string& in)
|
|
||||||
{
|
|
||||||
static std::unordered_map<std::string, std::string> subMap;
|
|
||||||
static bool mapInitialized = false;
|
|
||||||
if (!mapInitialized)
|
|
||||||
{
|
|
||||||
subMap["0000"] = "1100";
|
|
||||||
subMap["0001"] = "1000";
|
|
||||||
subMap["0010"] = "0001";
|
|
||||||
subMap["0011"] = "0111";
|
|
||||||
subMap["0100"] = "1011";
|
|
||||||
subMap["0101"] = "0011";
|
|
||||||
subMap["0110"] = "1101";
|
|
||||||
subMap["0111"] = "1111";
|
|
||||||
subMap["1000"] = "0000";
|
|
||||||
subMap["1001"] = "1010";
|
|
||||||
subMap["1010"] = "0100";
|
|
||||||
subMap["1011"] = "1001";
|
|
||||||
subMap["1100"] = "0010";
|
|
||||||
subMap["1101"] = "1110";
|
|
||||||
subMap["1110"] = "0101";
|
|
||||||
subMap["1111"] = "0110";
|
|
||||||
mapInitialized = true;
|
|
||||||
}
|
|
||||||
|
|
||||||
return subMap[in];
|
|
||||||
}
|
|
||||||
|
|
||||||
void GhettoCipher::Feistel::GenerateRoundKeys(const Block& seedKey)
|
|
||||||
{
|
|
||||||
// Clear initial key memory
|
|
||||||
ZeroKeyMemory();
|
|
||||||
roundKeys = Keyset();
|
|
||||||
|
|
||||||
// Derive the initial two round keys
|
|
||||||
|
|
||||||
// Compress- substitute, and expand the seed key to form the initial and the second-initial round key
|
|
||||||
// This action is non-linear and irreversible, and thus strenghtens security.
|
|
||||||
Halfblock compressedSeed1 = CompressionFunction(seedKey);
|
|
||||||
Halfblock compressedSeed2 = CompressionFunction(Shiftl(seedKey, 1)); // Shifting one key by 1 will result in a completely different compression
|
|
||||||
|
|
||||||
// To add further confusion, let's shift seed1 by 1 aswell (after compression, but before substitution)
|
|
||||||
// but only if the total number of bits set are a multiple of 3
|
|
||||||
// if it is a multiple of 4, we'll shift it by 1 into the opposite direction
|
|
||||||
const std::size_t setBits1 = compressedSeed1.count();
|
|
||||||
|
|
||||||
if (setBits1 % 4 == 0)
|
|
||||||
compressedSeed1 = Shiftr(compressedSeed1, 1);
|
|
||||||
else if (setBits1 % 3 == 0)
|
|
||||||
compressedSeed1 = Shiftl(compressedSeed1, 1);
|
|
||||||
|
|
||||||
// Now apply substitution
|
|
||||||
std::stringstream ssKey1;
|
|
||||||
std::stringstream ssKey2;
|
|
||||||
const std::string bitsKey1 = compressedSeed1.to_string();
|
|
||||||
const std::string bitsKey2 = compressedSeed2.to_string();
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < HALFBLOCK_SIZE; i += 4)
|
|
||||||
{
|
|
||||||
ssKey1 << SBox(bitsKey1.substr(i, 4));
|
|
||||||
ssKey2 << SBox(bitsKey2.substr(i, 4));
|
|
||||||
}
|
|
||||||
|
|
||||||
compressedSeed1 = Halfblock(ssKey1.str());
|
|
||||||
compressedSeed2 = Halfblock(ssKey2.str());
|
|
||||||
|
|
||||||
// Now extrapolate them to BLOCK_SIZE (key size) again
|
|
||||||
// Xor with the original seed key to get rid of the repititions caused by the expansion
|
|
||||||
roundKeys[0] = ExpansionFunction(compressedSeed1) ^ seedKey;
|
|
||||||
roundKeys[1] = ExpansionFunction(compressedSeed2) ^ seedKey;
|
|
||||||
|
|
||||||
|
|
||||||
// Now derive all other round keys
|
|
||||||
|
|
||||||
for (std::size_t i = 2; i < roundKeys.size(); i++)
|
|
||||||
{
|
|
||||||
// Initialize new round key with last round key
|
|
||||||
Block newKey = roundKeys[i - 1];
|
|
||||||
|
|
||||||
// Shift to left by how many bits are set, modulo 8
|
|
||||||
newKey = Shiftl(newKey, newKey.count() % 8); // This action is irreversible
|
|
||||||
|
|
||||||
// Split into two halfblocks,
|
|
||||||
// apply F() to one halfblock with rk[i-2],
|
|
||||||
// xor the other one with it
|
|
||||||
// and put them back together
|
|
||||||
auto halfkeys = FeistelSplit(newKey);
|
|
||||||
Halfblock halfkey1 = F(halfkeys.first, roundKeys[i - 2]);
|
|
||||||
Halfblock halfkey2 = halfkeys.second ^ halfkey1;
|
|
||||||
|
|
||||||
roundKeys[i] = FeistelCombine(halfkey1, halfkey2);
|
|
||||||
}
|
|
||||||
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
// These pragmas only work for MSVC and g++, as far as i know. Beware!!!
|
|
||||||
#if defined _WIN32 || defined _WIN64
|
|
||||||
#pragma optimize("", off )
|
|
||||||
#elif defined __GNUG__
|
|
||||||
#pragma GCC push_options
|
|
||||||
#pragma GCC optimize ("O0")
|
|
||||||
#endif
|
|
||||||
void GhettoCipher::Feistel::ZeroKeyMemory()
|
|
||||||
{
|
|
||||||
for (Block& key : roundKeys)
|
|
||||||
key.reset();
|
|
||||||
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
#if defined _WIN32 || defined _WIN64
|
|
||||||
#pragma optimize("", on )
|
|
||||||
#elif defined __GNUG__
|
|
||||||
#pragma GCC pop_options
|
|
||||||
#endif
|
|
||||||
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/GhettoCryptWrapper.cpp ***/
|
|
||||||
|
|
||||||
|
|
||||||
std::string GhettoCipher::GhettoCryptWrapper::EncryptString(const std::string& cleartext, const std::string& password)
|
|
||||||
{
|
|
||||||
// Instanciate our cipher and supply a key
|
|
||||||
const Block key = PasswordToKey(password);
|
|
||||||
Cipher cipher(key);
|
|
||||||
|
|
||||||
// Recode the ascii-string to bits
|
|
||||||
const Flexblock cleartext_bits = StringToBits(cleartext);
|
|
||||||
|
|
||||||
// Encrypt our cleartext bits
|
|
||||||
const Flexblock ciphertext_bits = cipher.Encipher(cleartext_bits);
|
|
||||||
|
|
||||||
// Recode the ciphertext bits to a hex-string
|
|
||||||
const std::string ciphertext = BitsToHexstring(ciphertext_bits);
|
|
||||||
|
|
||||||
// Return it
|
|
||||||
return ciphertext;
|
|
||||||
}
|
|
||||||
|
|
||||||
std::string GhettoCipher::GhettoCryptWrapper::DecryptString(const std::string& ciphertext, const std::string& password)
|
|
||||||
{
|
|
||||||
// Instanciate our cipher and supply a key
|
|
||||||
const Block key = PasswordToKey(password);
|
|
||||||
Cipher cipher(key);
|
|
||||||
|
|
||||||
// Recode the hex-string to bits
|
|
||||||
const Flexblock ciphertext_bits = HexstringToBits(ciphertext);
|
|
||||||
|
|
||||||
// Decrypt the ciphertext bits
|
|
||||||
const std::string cleartext_bits = cipher.Decipher(ciphertext_bits);
|
|
||||||
|
|
||||||
// Recode the cleartext bits to an ascii-string
|
|
||||||
const std::string cleartext = BitsToString(cleartext_bits);
|
|
||||||
|
|
||||||
// Return it
|
|
||||||
return cleartext;
|
|
||||||
}
|
|
||||||
|
|
||||||
bool GhettoCipher::GhettoCryptWrapper::EncryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password, bool printProgressReport)
|
|
||||||
{
|
|
||||||
try
|
|
||||||
{
|
|
||||||
// Read the file to bits
|
|
||||||
const Flexblock cleartext_bits = ReadFileToBits(filename_in);
|
|
||||||
|
|
||||||
// Instanciate our cipher and supply a key
|
|
||||||
const Block key = PasswordToKey(password);
|
|
||||||
Cipher cipher(key);
|
|
||||||
|
|
||||||
// Encrypt our cleartext bits
|
|
||||||
const Flexblock ciphertext_bits = cipher.Encipher(cleartext_bits, printProgressReport);
|
|
||||||
|
|
||||||
// Write our ciphertext bits to file
|
|
||||||
WriteBitsToFile(filename_out, ciphertext_bits);
|
|
||||||
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
catch (std::runtime_error&)
|
|
||||||
{
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
bool GhettoCipher::GhettoCryptWrapper::DecryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password, bool printProgressReport)
|
|
||||||
{
|
|
||||||
try
|
|
||||||
{
|
|
||||||
// Read the file to bits
|
|
||||||
const Flexblock ciphertext_bits = ReadFileToBits(filename_in);
|
|
||||||
|
|
||||||
// Instanciate our cipher and supply a key
|
|
||||||
const Block key = PasswordToKey(password);
|
|
||||||
Cipher cipher(key);
|
|
||||||
|
|
||||||
// Decrypt the ciphertext bits
|
|
||||||
const Flexblock cleartext_bits = cipher.Decipher(ciphertext_bits, printProgressReport);
|
|
||||||
|
|
||||||
// Write our cleartext bits to file
|
|
||||||
WriteBitsToFile(filename_out, cleartext_bits);
|
|
||||||
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
catch (std::runtime_error&)
|
|
||||||
{
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/InitializationVector.cpp ***/
|
|
||||||
|
|
||||||
|
|
||||||
GhettoCipher::InitializationVector::InitializationVector(const Block& seed)
|
|
||||||
{
|
|
||||||
// We'll generate our initialization vector by encrypting our seed with itself as a key
|
|
||||||
// iv = E(M=seed, K=seed)
|
|
||||||
iv = Feistel(seed).Encipher(seed);
|
|
||||||
}
|
|
||||||
|
|
||||||
GhettoCipher::InitializationVector::operator GhettoCipher::Block() const
|
|
||||||
{
|
|
||||||
return iv;
|
|
||||||
}
|
|
||||||
|
|
||||||
@ -1,864 +0,0 @@
|
|||||||
/*
|
|
||||||
* BSD 2-Clause License
|
|
||||||
*
|
|
||||||
* Copyright (c) 2021, Leon Etienne
|
|
||||||
* All rights reserved.
|
|
||||||
*
|
|
||||||
* Redistribution and use in source and binary forms, with or without
|
|
||||||
* modification, are permitted provided that the following conditions are met:
|
|
||||||
*
|
|
||||||
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
||||||
* list of conditions and the following disclaimer.
|
|
||||||
*
|
|
||||||
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
* this list of conditions and the following disclaimer in the documentation
|
|
||||||
* and/or other materials provided with the distribution.
|
|
||||||
*
|
|
||||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
||||||
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
||||||
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
||||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
||||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
||||||
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
||||||
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
||||||
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
||||||
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
||||||
*/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/GhettoCryptWrapper.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <string>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
/** This class is a wrapper to make working with the GhettoCipher super easy with a python-like syntax
|
|
||||||
*/
|
|
||||||
class GhettoCryptWrapper
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
//! Will encrypt a string and return it hexadecimally encoded.
|
|
||||||
static std::string EncryptString(const std::string& cleartext, const std::string& password);
|
|
||||||
|
|
||||||
//! Will decrypt a hexadecimally encoded string.
|
|
||||||
static std::string DecryptString(const std::string& ciphertext, const std::string& password);
|
|
||||||
|
|
||||||
//! Will encrypt a file.
|
|
||||||
//! Returns false if anything goes wrong (like, file-access).
|
|
||||||
//! @filename_in The file to be read.
|
|
||||||
//! @filename_out The file the encrypted version should be saved in.
|
|
||||||
static bool EncryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password, bool printProgressReport = false);
|
|
||||||
|
|
||||||
//! Will decrypt a file.
|
|
||||||
//! Returns false if anything goes wrong (like, file-access).
|
|
||||||
//! @filename_in The file to be read.
|
|
||||||
//! @filename_out The file the decrypted version should be saved in.
|
|
||||||
static bool DecryptFile(const std::string& filename_in, const std::string& filename_out, const std::string& password, bool printProgressReport = false);
|
|
||||||
|
|
||||||
private:
|
|
||||||
// No instanciation! >:(
|
|
||||||
GhettoCryptWrapper();
|
|
||||||
};
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Flexblock.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <string>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
//! A "bitset" of variable length
|
|
||||||
typedef std::string Flexblock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Config.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <cstddef>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
// MUST BE A POWER OF 2 > 4
|
|
||||||
constexpr std::size_t BLOCK_SIZE = 512;
|
|
||||||
|
|
||||||
// MUST BE > 2
|
|
||||||
constexpr std::size_t N_ROUNDS = 64;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Version.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#define GHETTOCRYPT_VERSION 0.21
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/SecureBitset.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <bitset>
|
|
||||||
#include <ostream>
|
|
||||||
#include <istream>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
/** Wrapper for std::bitset<T> that zeroes memory upon deletion.
|
|
||||||
* This does not include ALL methods, but the ones needed.
|
|
||||||
*
|
|
||||||
* Just creating a specialization of std::bitset<T> does not work.
|
|
||||||
*/
|
|
||||||
template <std::size_t T>
|
|
||||||
class SecureBitset
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
explicit SecureBitset();
|
|
||||||
explicit SecureBitset(const std::string& str);
|
|
||||||
explicit SecureBitset(const long long int i);
|
|
||||||
|
|
||||||
~SecureBitset();
|
|
||||||
|
|
||||||
bool operator==(const SecureBitset<T>& other) const;
|
|
||||||
bool operator!=(const SecureBitset<T>& other) const;
|
|
||||||
bool operator[](const std::size_t) const;
|
|
||||||
bool test(const std::size_t index) const;
|
|
||||||
bool all() const;
|
|
||||||
bool any() const;
|
|
||||||
bool none() const;
|
|
||||||
std::size_t count() const;
|
|
||||||
std::size_t size() const;
|
|
||||||
SecureBitset<T>& operator&=(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T>& operator|=(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T>& operator^=(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T> operator&(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T> operator|(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T> operator^(const SecureBitset<T>& other);
|
|
||||||
SecureBitset<T> operator~() const;
|
|
||||||
SecureBitset<T>& operator<<=(const std::size_t offset);
|
|
||||||
SecureBitset<T>& operator>>=(const std::size_t offset);
|
|
||||||
SecureBitset<T> operator<<(const std::size_t offset) const;
|
|
||||||
SecureBitset<T> operator>>(const std::size_t offset) const;
|
|
||||||
SecureBitset<T>& set();
|
|
||||||
SecureBitset<T>& set(const std::size_t index, bool value = true);
|
|
||||||
SecureBitset<T>& reset();
|
|
||||||
SecureBitset<T>& reset(const std::size_t index);
|
|
||||||
SecureBitset<T>& flip();
|
|
||||||
SecureBitset<T>& flip(const std::size_t index);
|
|
||||||
std::string to_string() const;
|
|
||||||
unsigned long to_ulong() const;
|
|
||||||
unsigned long long to_ullong() const;
|
|
||||||
|
|
||||||
std::bitset<T>& Get();
|
|
||||||
const std::bitset<T>& Get() const;
|
|
||||||
|
|
||||||
private:
|
|
||||||
std::bitset<T> bitset;
|
|
||||||
};
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>::SecureBitset()
|
|
||||||
:
|
|
||||||
bitset()
|
|
||||||
{
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>::SecureBitset(const std::string& str)
|
|
||||||
:
|
|
||||||
bitset(str)
|
|
||||||
{
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>::SecureBitset(const long long int i)
|
|
||||||
:
|
|
||||||
bitset(i)
|
|
||||||
{
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
// Don't optimize the destructor out!!!
|
|
||||||
// These pragmas only work for MSVC and g++, as far as i know. Beware!!!
|
|
||||||
#if defined _WIN32 || defined _WIN64
|
|
||||||
#pragma optimize("", off )
|
|
||||||
#elif defined __GNUG__
|
|
||||||
#pragma GCC push_options
|
|
||||||
#pragma GCC optimize ("O0")
|
|
||||||
#endif
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>::~SecureBitset()
|
|
||||||
{
|
|
||||||
bitset.reset();
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
#if defined _WIN32 || defined _WIN64
|
|
||||||
#pragma optimize("", on )
|
|
||||||
#elif defined __GNUG__
|
|
||||||
#pragma GCC pop_options
|
|
||||||
#endif
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::operator==(const SecureBitset<T>& other) const
|
|
||||||
{
|
|
||||||
return bitset == other.bitset;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::operator!=(const SecureBitset<T>& other) const
|
|
||||||
{
|
|
||||||
return bitset != other.bitset;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::operator[](const std::size_t index) const
|
|
||||||
{
|
|
||||||
return bitset[index];
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::test(const std::size_t index) const
|
|
||||||
{
|
|
||||||
return bitset.test(index);
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::all() const
|
|
||||||
{
|
|
||||||
return bitset.all();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::any() const
|
|
||||||
{
|
|
||||||
return bitset.any();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline bool SecureBitset<T>::none() const
|
|
||||||
{
|
|
||||||
return bitset.none();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline std::size_t SecureBitset<T>::count() const
|
|
||||||
{
|
|
||||||
return bitset.count();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline std::size_t SecureBitset<T>::size() const
|
|
||||||
{
|
|
||||||
return bitset.count();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::operator&=(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
bitset &= other.bitset;
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::operator|=(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
bitset |= other.bitset;
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::operator^=(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
bitset ^= other.bitset;
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator&(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = bitset & other.bitset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator|(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = bitset | other.bitset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator^(const SecureBitset<T>& other)
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = bitset ^ other.bitset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator~() const
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = ~bitset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::operator<<=(const std::size_t offset)
|
|
||||||
{
|
|
||||||
bitset <<= offset;
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::operator>>=(const std::size_t offset)
|
|
||||||
{
|
|
||||||
bitset >>= offset;
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator<<(const std::size_t offset) const
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = bitset << offset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T> SecureBitset<T>::operator>>(const std::size_t offset) const
|
|
||||||
{
|
|
||||||
SecureBitset bs;
|
|
||||||
bs.bitset = bitset >> offset;
|
|
||||||
return bs;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::set()
|
|
||||||
{
|
|
||||||
bitset.set();
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::set(const std::size_t index, bool value)
|
|
||||||
{
|
|
||||||
bitset.set(index, value);
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::reset()
|
|
||||||
{
|
|
||||||
bitset.reset();
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::reset(const std::size_t index)
|
|
||||||
{
|
|
||||||
bitset.reset(index);
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::flip()
|
|
||||||
{
|
|
||||||
bitset.flip();
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline SecureBitset<T>& SecureBitset<T>::flip(const std::size_t index)
|
|
||||||
{
|
|
||||||
bitset.flip(index);
|
|
||||||
return *this;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline std::string SecureBitset<T>::to_string() const
|
|
||||||
{
|
|
||||||
return bitset.to_string();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline unsigned long SecureBitset<T>::to_ulong() const
|
|
||||||
{
|
|
||||||
return bitset.to_ulong();
|
|
||||||
}
|
|
||||||
template<std::size_t T>
|
|
||||||
inline unsigned long long SecureBitset<T>::to_ullong() const
|
|
||||||
{
|
|
||||||
return bitset.to_ullong();
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline std::bitset<T>& SecureBitset<T>::Get()
|
|
||||||
{
|
|
||||||
return bitset;
|
|
||||||
}
|
|
||||||
|
|
||||||
template<std::size_t T>
|
|
||||||
inline const std::bitset<T>& SecureBitset<T>::Get() const
|
|
||||||
{
|
|
||||||
return bitset;
|
|
||||||
}
|
|
||||||
|
|
||||||
template <std::size_t T>
|
|
||||||
inline std::ostream& operator<<(std::ostream& ofs, const SecureBitset<T>& bs)
|
|
||||||
{
|
|
||||||
return ofs << bs.Get();
|
|
||||||
}
|
|
||||||
|
|
||||||
template <std::size_t T>
|
|
||||||
inline std::istream& operator>>(std::istream& ifs, const SecureBitset<T>& bs)
|
|
||||||
{
|
|
||||||
return ifs >> bs.Get();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Halfblock.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <cstdint>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
constexpr std::size_t HALFBLOCK_SIZE = (BLOCK_SIZE / 2);
|
|
||||||
typedef SecureBitset<HALFBLOCK_SIZE> Halfblock;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Block.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
typedef SecureBitset<BLOCK_SIZE> Block;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/InitializationVector.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
/** Will create a sudo-random Block based on a seed
|
|
||||||
*/
|
|
||||||
class InitializationVector
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
InitializationVector(const GhettoCipher::Block& seed);
|
|
||||||
|
|
||||||
operator GhettoCipher::Block() const;
|
|
||||||
|
|
||||||
private:
|
|
||||||
GhettoCipher::Block iv;
|
|
||||||
};
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Util.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <bitset>
|
|
||||||
#include <sstream>
|
|
||||||
#include <fstream>
|
|
||||||
#include <cstring>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
//! Mod-operator that works with negative values
|
|
||||||
inline int Mod(const int numerator, const int denominator)
|
|
||||||
{
|
|
||||||
return (denominator + (numerator % denominator)) % denominator;
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will perform a wrapping left-bitshift on a bitset
|
|
||||||
template <std::size_t T>
|
|
||||||
inline SecureBitset<T> Shiftl(const SecureBitset<T>& bits, const std::size_t amount)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string bitss = bits.to_string();
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < bitss.size(); i++)
|
|
||||||
ss << bitss[Mod((int)(i + amount), (int)bitss.size())];
|
|
||||||
|
|
||||||
return SecureBitset<T>(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will perform a wrapping right-bitshift on a bitset
|
|
||||||
template <std::size_t T>
|
|
||||||
inline SecureBitset<T> Shiftr(const SecureBitset<T>& bits, const std::size_t amount)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string bitss = bits.to_string();
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < bitss.size(); i++)
|
|
||||||
ss << bitss[Mod((i - amount), bitss.size())];
|
|
||||||
|
|
||||||
return SecureBitset<T>(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will pad a string to a set length with a certain character
|
|
||||||
inline std::string PadStringToLength(const std::string& str, const std::size_t len, const char pad, const bool padLeft = true)
|
|
||||||
{
|
|
||||||
// Fast-reject: Already above padded length
|
|
||||||
if (str.length() >= len)
|
|
||||||
return str;
|
|
||||||
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
// Pad left:
|
|
||||||
if (padLeft)
|
|
||||||
{
|
|
||||||
for (std::size_t i = 0; i < len - str.size(); i++)
|
|
||||||
ss << pad;
|
|
||||||
ss << str;
|
|
||||||
}
|
|
||||||
// Pad right:
|
|
||||||
else
|
|
||||||
{
|
|
||||||
ss << str;
|
|
||||||
for (std::size_t i = 0; i < len - str.size(); i++)
|
|
||||||
ss << pad;
|
|
||||||
}
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a string to a fixed-size data block
|
|
||||||
inline Block StringToBitblock(const std::string& s)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < s.size(); i++)
|
|
||||||
ss << std::bitset<8>(s[i]);
|
|
||||||
|
|
||||||
// Pad rest with zeores
|
|
||||||
return Block(PadStringToLength(ss.str(), 128, '0', false));
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a string to a flexible data block
|
|
||||||
inline Flexblock StringToBits(const std::string& s)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < s.size(); i++)
|
|
||||||
ss << std::bitset<8>(s[i]);
|
|
||||||
|
|
||||||
return Flexblock(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a fixed-size data block to a bytestring
|
|
||||||
inline std::string BitblockToBytes(const Block& bits)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
const std::string bitstring = bits.to_string();
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < BLOCK_SIZE; i += 8)
|
|
||||||
{
|
|
||||||
ss << (char)std::bitset<8>(bitstring.substr(i, 8)).to_ulong();
|
|
||||||
}
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a fixed-size data block to a string
|
|
||||||
//! The difference to BitblockToBytes() is, that it strips excess nullbytes
|
|
||||||
inline std::string BitblockToString(const Block& bits)
|
|
||||||
{
|
|
||||||
// Decode to bytes
|
|
||||||
std::string text = BitblockToBytes(bits);
|
|
||||||
|
|
||||||
// Dümp excess nullbytes
|
|
||||||
text.resize(strlen(text.data()));
|
|
||||||
|
|
||||||
return text;
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a flexible data block to a bytestring
|
|
||||||
inline std::string BitsToBytes(const Flexblock& bits)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
const std::string bitstring = bits;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < bits.size(); i += 8)
|
|
||||||
{
|
|
||||||
ss << (char)std::bitset<8>(bitstring.substr(i, 8)).to_ulong();
|
|
||||||
}
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will convert a flexible data block to a string
|
|
||||||
//! //! The difference to BitsToBytes() is, that it strips excess nullbytes
|
|
||||||
inline std::string BitsToString(const Flexblock& bits)
|
|
||||||
{
|
|
||||||
// Decode to bytes
|
|
||||||
std::string text = BitsToBytes(bits);
|
|
||||||
|
|
||||||
// Dümp excess nullbytes
|
|
||||||
text.resize(strlen(text.data()));
|
|
||||||
|
|
||||||
return text;
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Turns a fixed-size data block into a hex-string
|
|
||||||
inline std::string BitblockToHexstring(const Block& b)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string charset = "0123456789abcdef";
|
|
||||||
const std::string bstr = b.to_string();
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < bstr.size(); i += 4)
|
|
||||||
ss << charset[std::bitset<4>(bstr.substr(i, 4)).to_ulong()];
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Turns a flexible data block into a hex-string
|
|
||||||
inline std::string BitsToHexstring(const Flexblock& b)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
const std::string charset = "0123456789abcdef";
|
|
||||||
const std::string bstr = b;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < bstr.size(); i += 4)
|
|
||||||
ss << charset[std::bitset<4>(bstr.substr(i, 4)).to_ulong()];
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
//! Turns a hex string into a fixed-size data block
|
|
||||||
inline Block HexstringToBitblock(const std::string& hexstring)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < hexstring.size(); i++)
|
|
||||||
{
|
|
||||||
const char c = hexstring[i];
|
|
||||||
|
|
||||||
// Get value
|
|
||||||
std::size_t value;
|
|
||||||
if ((c >= '0') && (c <= '9'))
|
|
||||||
// Is it a number?
|
|
||||||
value = ((std::size_t)c - '0') + 0;
|
|
||||||
else if ((c >= 'a') && (c <= 'f'))
|
|
||||||
// Else, it is a lowercase letter
|
|
||||||
value = ((std::size_t)c - 'a') + 10;
|
|
||||||
else
|
|
||||||
throw std::logic_error("non-hex string detected in HexstringToBits()");
|
|
||||||
|
|
||||||
// Append to our bits
|
|
||||||
ss << std::bitset<4>(value);
|
|
||||||
}
|
|
||||||
|
|
||||||
return Block(ss.str());
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Turns a hex string into a flexible data block
|
|
||||||
inline Flexblock HexstringToBits(const std::string& hexstring)
|
|
||||||
{
|
|
||||||
std::stringstream ss;
|
|
||||||
|
|
||||||
for (std::size_t i = 0; i < hexstring.size(); i++)
|
|
||||||
{
|
|
||||||
const char c = hexstring[i];
|
|
||||||
|
|
||||||
// Get value
|
|
||||||
std::size_t value;
|
|
||||||
if ((c >= '0') && (c <= '9'))
|
|
||||||
// Is it a number?
|
|
||||||
value = ((std::size_t)c - '0') + 0;
|
|
||||||
else if ((c >= 'a') && (c <= 'f'))
|
|
||||||
// Else, it is a lowercase letter
|
|
||||||
value = ((std::size_t)c - 'a') + 10;
|
|
||||||
else
|
|
||||||
throw std::logic_error("non-hex string detected in HexstringToBits()");
|
|
||||||
|
|
||||||
// Append to our bits
|
|
||||||
ss << std::bitset<4>(value);
|
|
||||||
}
|
|
||||||
|
|
||||||
return ss.str();
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Creates a key of size BLOCK_SIZE from a password of arbitrary length.
|
|
||||||
//! Using passwords larger (in bits) than BLOCK_SIZE is generally not recommended.
|
|
||||||
//! Note that if your password is shorter (in bits) than BLOCK_SIZE, the rest of the key will be padded with 0 (see next line!).
|
|
||||||
//! To provide a better initial key, (and to get rid of padding zeroes), the raw result (b) will be xor'd with an initialization vector based on b.
|
|
||||||
//! : return b ^ iv(b)
|
|
||||||
inline Block PasswordToKey(const std::string& in)
|
|
||||||
{
|
|
||||||
Block b;
|
|
||||||
|
|
||||||
// Segment the password in segments of key-size, and xor them together.
|
|
||||||
for (std::size_t i = 0; i < in.size(); i += BLOCK_SIZE / 8)
|
|
||||||
b ^= StringToBitblock(
|
|
||||||
PadStringToLength(in.substr(i, BLOCK_SIZE / 8), BLOCK_SIZE / 8, 0, false)
|
|
||||||
);
|
|
||||||
|
|
||||||
return b ^ InitializationVector(b);
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will read a file into a flexblock
|
|
||||||
inline Flexblock ReadFileToBits(const std::string& filepath)
|
|
||||||
{
|
|
||||||
// Read file
|
|
||||||
std::ifstream ifs(filepath, std::ios::binary);
|
|
||||||
|
|
||||||
if (!ifs.good())
|
|
||||||
throw std::runtime_error("Unable to open ifilestream!");
|
|
||||||
|
|
||||||
std::stringstream ss;
|
|
||||||
std::copy(
|
|
||||||
std::istreambuf_iterator<char>(ifs),
|
|
||||||
std::istreambuf_iterator<char>(),
|
|
||||||
std::ostreambuf_iterator<char>(ss)
|
|
||||||
);
|
|
||||||
|
|
||||||
ifs.close();
|
|
||||||
|
|
||||||
const std::string bytes = ss.str();
|
|
||||||
|
|
||||||
// Convert bytes to bits
|
|
||||||
return StringToBits(bytes);
|
|
||||||
}
|
|
||||||
|
|
||||||
//! Will save bits to a binary file
|
|
||||||
inline void WriteBitsToFile(const std::string& filepath, const Flexblock& bits)
|
|
||||||
{
|
|
||||||
// Convert bits to bytes
|
|
||||||
const std::string bytes = BitsToBytes(bits);
|
|
||||||
|
|
||||||
// Write bits to file
|
|
||||||
std::ofstream ofs(filepath, std::ios::binary);
|
|
||||||
|
|
||||||
if (!ofs.good())
|
|
||||||
throw std::runtime_error("Unable to open ofilestream!");
|
|
||||||
|
|
||||||
ofs.write(bytes.data(), bytes.length());
|
|
||||||
ofs.close();
|
|
||||||
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Keyset.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
#include <array>
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
typedef std::array<Block, N_ROUNDS> Keyset;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Feistel.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
/** Class to perform a feistel block chipher
|
|
||||||
*/
|
|
||||||
class Feistel
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
explicit Feistel(const Block& key);
|
|
||||||
|
|
||||||
Feistel(const Feistel& other) = delete;
|
|
||||||
Feistel(Feistel&& other) noexcept = delete;
|
|
||||||
|
|
||||||
~Feistel();
|
|
||||||
|
|
||||||
//! Will set the seed-key for this feistel network.
|
|
||||||
//! Roundkeys will be derived from this.
|
|
||||||
void SetKey(const Block& key);
|
|
||||||
|
|
||||||
//! Will encipher a data block via the set seed-key
|
|
||||||
Block Encipher(const Block& data);
|
|
||||||
|
|
||||||
//! Will decipher a data block via the set seed-key
|
|
||||||
Block Decipher(const Block& data);
|
|
||||||
|
|
||||||
private:
|
|
||||||
//! Will run the feistel rounds, with either regular key order or reversed key order
|
|
||||||
Block Run(const Block& data, bool reverseKeys);
|
|
||||||
|
|
||||||
//! Arbitrary cipher function
|
|
||||||
static Halfblock F(Halfblock m, const Block& key);
|
|
||||||
|
|
||||||
//! Split a data block into two half blocks (into L and R)
|
|
||||||
static std::pair<Halfblock, Halfblock> FeistelSplit(const Block& block);
|
|
||||||
|
|
||||||
//! Combine two half blocks (L and R) into a regular data block
|
|
||||||
static Block FeistelCombine(const Halfblock& l, const Halfblock& r);
|
|
||||||
|
|
||||||
//! Will expand a halfblock to a fullblock
|
|
||||||
static Block ExpansionFunction(const Halfblock& block);
|
|
||||||
|
|
||||||
//! Will compress a fullblock to a halfblock
|
|
||||||
static Halfblock CompressionFunction(const Block& block);
|
|
||||||
|
|
||||||
//! Substitutes four bits by static random others
|
|
||||||
static std::string SBox(const std::string& in);
|
|
||||||
|
|
||||||
//! Will generate a the round keys
|
|
||||||
void GenerateRoundKeys(const Block& seedKey);
|
|
||||||
|
|
||||||
//! Will zero the memory used by the keyset
|
|
||||||
void ZeroKeyMemory();
|
|
||||||
|
|
||||||
Keyset roundKeys;
|
|
||||||
};
|
|
||||||
}
|
|
||||||
|
|
||||||
/*** ./../GhettoCrypt/Cipher.h ***/
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
namespace GhettoCipher
|
|
||||||
{
|
|
||||||
/** Class to apply a block cipher to messages of arbitrary length in a distributed manner
|
|
||||||
*/
|
|
||||||
class Cipher
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
explicit Cipher(const Block& key);
|
|
||||||
explicit Cipher(const std::string& password);
|
|
||||||
|
|
||||||
Cipher(const Cipher& other) = delete;
|
|
||||||
Cipher(Cipher&& other) noexcept = delete;
|
|
||||||
|
|
||||||
~Cipher();
|
|
||||||
|
|
||||||
//! Will set the key
|
|
||||||
void SetKey(const Block& key);
|
|
||||||
|
|
||||||
//! Will set the key from a password
|
|
||||||
void SetPassword(const std::string& password);
|
|
||||||
|
|
||||||
//! Will encipher a flexblock of data
|
|
||||||
Flexblock Encipher(const Flexblock& data, bool printProgress = false) const;
|
|
||||||
|
|
||||||
//! Will decipher a flexblock of data
|
|
||||||
Flexblock Decipher(const Flexblock& data, bool printProgress = false) const;
|
|
||||||
|
|
||||||
private:
|
|
||||||
Block key;
|
|
||||||
|
|
||||||
//! Will zero the memory used by the key
|
|
||||||
void ZeroKeyMemory();
|
|
||||||
|
|
||||||
// Initial value for cipher block chaining
|
|
||||||
Block initializationVector;
|
|
||||||
};
|
|
||||||
}
|
|
||||||
BIN
INCLUDE/deggl
BIN
INCLUDE/deggl
Binary file not shown.
@ -1,8 +0,0 @@
|
|||||||
# Compile single-header
|
|
||||||
deggl -i ../GhettoCrypt/*.cpp ../GhettoCrypt/Version.h --out GhettoCrypt --loc --license-file ../LICENSE
|
|
||||||
|
|
||||||
|
|
||||||
# Verify that this builds cleanly via g++
|
|
||||||
echo "Verifying build..."
|
|
||||||
g++ GhettoCrypt.cpp -c -S -o - -Wall > /dev/null
|
|
||||||
echo "If you saw no compiler errors, everything's good!"
|
|
||||||
699
LICENSE
699
LICENSE
@ -1,25 +1,674 @@
|
|||||||
BSD 2-Clause License
|
GNU GENERAL PUBLIC LICENSE
|
||||||
|
Version 3, 29 June 2007
|
||||||
Copyright (c) 2021, Leon Etienne
|
|
||||||
All rights reserved.
|
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
|
||||||
|
Everyone is permitted to copy and distribute verbatim copies
|
||||||
Redistribution and use in source and binary forms, with or without
|
of this license document, but changing it is not allowed.
|
||||||
modification, are permitted provided that the following conditions are met:
|
|
||||||
|
Preamble
|
||||||
1. Redistributions of source code must retain the above copyright notice, this
|
|
||||||
list of conditions and the following disclaimer.
|
The GNU General Public License is a free, copyleft license for
|
||||||
|
software and other kinds of works.
|
||||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
|
||||||
this list of conditions and the following disclaimer in the documentation
|
The licenses for most software and other practical works are designed
|
||||||
and/or other materials provided with the distribution.
|
to take away your freedom to share and change the works. By contrast,
|
||||||
|
the GNU General Public License is intended to guarantee your freedom to
|
||||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
share and change all versions of a program--to make sure it remains free
|
||||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
software for all its users. We, the Free Software Foundation, use the
|
||||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
GNU General Public License for most of our software; it applies also to
|
||||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
any other work released this way by its authors. You can apply it to
|
||||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
your programs, too.
|
||||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
||||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
When we speak of free software, we are referring to freedom, not
|
||||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
price. Our General Public Licenses are designed to make sure that you
|
||||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
have the freedom to distribute copies of free software (and charge for
|
||||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
them if you wish), that you receive source code or can get it if you
|
||||||
|
want it, that you can change the software or use pieces of it in new
|
||||||
|
free programs, and that you know you can do these things.
|
||||||
|
|
||||||
|
To protect your rights, we need to prevent others from denying you
|
||||||
|
these rights or asking you to surrender the rights. Therefore, you have
|
||||||
|
certain responsibilities if you distribute copies of the software, or if
|
||||||
|
you modify it: responsibilities to respect the freedom of others.
|
||||||
|
|
||||||
|
For example, if you distribute copies of such a program, whether
|
||||||
|
gratis or for a fee, you must pass on to the recipients the same
|
||||||
|
freedoms that you received. You must make sure that they, too, receive
|
||||||
|
or can get the source code. And you must show them these terms so they
|
||||||
|
know their rights.
|
||||||
|
|
||||||
|
Developers that use the GNU GPL protect your rights with two steps:
|
||||||
|
(1) assert copyright on the software, and (2) offer you this License
|
||||||
|
giving you legal permission to copy, distribute and/or modify it.
|
||||||
|
|
||||||
|
For the developers' and authors' protection, the GPL clearly explains
|
||||||
|
that there is no warranty for this free software. For both users' and
|
||||||
|
authors' sake, the GPL requires that modified versions be marked as
|
||||||
|
changed, so that their problems will not be attributed erroneously to
|
||||||
|
authors of previous versions.
|
||||||
|
|
||||||
|
Some devices are designed to deny users access to install or run
|
||||||
|
modified versions of the software inside them, although the manufacturer
|
||||||
|
can do so. This is fundamentally incompatible with the aim of
|
||||||
|
protecting users' freedom to change the software. The systematic
|
||||||
|
pattern of such abuse occurs in the area of products for individuals to
|
||||||
|
use, which is precisely where it is most unacceptable. Therefore, we
|
||||||
|
have designed this version of the GPL to prohibit the practice for those
|
||||||
|
products. If such problems arise substantially in other domains, we
|
||||||
|
stand ready to extend this provision to those domains in future versions
|
||||||
|
of the GPL, as needed to protect the freedom of users.
|
||||||
|
|
||||||
|
Finally, every program is threatened constantly by software patents.
|
||||||
|
States should not allow patents to restrict development and use of
|
||||||
|
software on general-purpose computers, but in those that do, we wish to
|
||||||
|
avoid the special danger that patents applied to a free program could
|
||||||
|
make it effectively proprietary. To prevent this, the GPL assures that
|
||||||
|
patents cannot be used to render the program non-free.
|
||||||
|
|
||||||
|
The precise terms and conditions for copying, distribution and
|
||||||
|
modification follow.
|
||||||
|
|
||||||
|
TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
0. Definitions.
|
||||||
|
|
||||||
|
"This License" refers to version 3 of the GNU General Public License.
|
||||||
|
|
||||||
|
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||||
|
works, such as semiconductor masks.
|
||||||
|
|
||||||
|
"The Program" refers to any copyrightable work licensed under this
|
||||||
|
License. Each licensee is addressed as "you". "Licensees" and
|
||||||
|
"recipients" may be individuals or organizations.
|
||||||
|
|
||||||
|
To "modify" a work means to copy from or adapt all or part of the work
|
||||||
|
in a fashion requiring copyright permission, other than the making of an
|
||||||
|
exact copy. The resulting work is called a "modified version" of the
|
||||||
|
earlier work or a work "based on" the earlier work.
|
||||||
|
|
||||||
|
A "covered work" means either the unmodified Program or a work based
|
||||||
|
on the Program.
|
||||||
|
|
||||||
|
To "propagate" a work means to do anything with it that, without
|
||||||
|
permission, would make you directly or secondarily liable for
|
||||||
|
infringement under applicable copyright law, except executing it on a
|
||||||
|
computer or modifying a private copy. Propagation includes copying,
|
||||||
|
distribution (with or without modification), making available to the
|
||||||
|
public, and in some countries other activities as well.
|
||||||
|
|
||||||
|
To "convey" a work means any kind of propagation that enables other
|
||||||
|
parties to make or receive copies. Mere interaction with a user through
|
||||||
|
a computer network, with no transfer of a copy, is not conveying.
|
||||||
|
|
||||||
|
An interactive user interface displays "Appropriate Legal Notices"
|
||||||
|
to the extent that it includes a convenient and prominently visible
|
||||||
|
feature that (1) displays an appropriate copyright notice, and (2)
|
||||||
|
tells the user that there is no warranty for the work (except to the
|
||||||
|
extent that warranties are provided), that licensees may convey the
|
||||||
|
work under this License, and how to view a copy of this License. If
|
||||||
|
the interface presents a list of user commands or options, such as a
|
||||||
|
menu, a prominent item in the list meets this criterion.
|
||||||
|
|
||||||
|
1. Source Code.
|
||||||
|
|
||||||
|
The "source code" for a work means the preferred form of the work
|
||||||
|
for making modifications to it. "Object code" means any non-source
|
||||||
|
form of a work.
|
||||||
|
|
||||||
|
A "Standard Interface" means an interface that either is an official
|
||||||
|
standard defined by a recognized standards body, or, in the case of
|
||||||
|
interfaces specified for a particular programming language, one that
|
||||||
|
is widely used among developers working in that language.
|
||||||
|
|
||||||
|
The "System Libraries" of an executable work include anything, other
|
||||||
|
than the work as a whole, that (a) is included in the normal form of
|
||||||
|
packaging a Major Component, but which is not part of that Major
|
||||||
|
Component, and (b) serves only to enable use of the work with that
|
||||||
|
Major Component, or to implement a Standard Interface for which an
|
||||||
|
implementation is available to the public in source code form. A
|
||||||
|
"Major Component", in this context, means a major essential component
|
||||||
|
(kernel, window system, and so on) of the specific operating system
|
||||||
|
(if any) on which the executable work runs, or a compiler used to
|
||||||
|
produce the work, or an object code interpreter used to run it.
|
||||||
|
|
||||||
|
The "Corresponding Source" for a work in object code form means all
|
||||||
|
the source code needed to generate, install, and (for an executable
|
||||||
|
work) run the object code and to modify the work, including scripts to
|
||||||
|
control those activities. However, it does not include the work's
|
||||||
|
System Libraries, or general-purpose tools or generally available free
|
||||||
|
programs which are used unmodified in performing those activities but
|
||||||
|
which are not part of the work. For example, Corresponding Source
|
||||||
|
includes interface definition files associated with source files for
|
||||||
|
the work, and the source code for shared libraries and dynamically
|
||||||
|
linked subprograms that the work is specifically designed to require,
|
||||||
|
such as by intimate data communication or control flow between those
|
||||||
|
subprograms and other parts of the work.
|
||||||
|
|
||||||
|
The Corresponding Source need not include anything that users
|
||||||
|
can regenerate automatically from other parts of the Corresponding
|
||||||
|
Source.
|
||||||
|
|
||||||
|
The Corresponding Source for a work in source code form is that
|
||||||
|
same work.
|
||||||
|
|
||||||
|
2. Basic Permissions.
|
||||||
|
|
||||||
|
All rights granted under this License are granted for the term of
|
||||||
|
copyright on the Program, and are irrevocable provided the stated
|
||||||
|
conditions are met. This License explicitly affirms your unlimited
|
||||||
|
permission to run the unmodified Program. The output from running a
|
||||||
|
covered work is covered by this License only if the output, given its
|
||||||
|
content, constitutes a covered work. This License acknowledges your
|
||||||
|
rights of fair use or other equivalent, as provided by copyright law.
|
||||||
|
|
||||||
|
You may make, run and propagate covered works that you do not
|
||||||
|
convey, without conditions so long as your license otherwise remains
|
||||||
|
in force. You may convey covered works to others for the sole purpose
|
||||||
|
of having them make modifications exclusively for you, or provide you
|
||||||
|
with facilities for running those works, provided that you comply with
|
||||||
|
the terms of this License in conveying all material for which you do
|
||||||
|
not control copyright. Those thus making or running the covered works
|
||||||
|
for you must do so exclusively on your behalf, under your direction
|
||||||
|
and control, on terms that prohibit them from making any copies of
|
||||||
|
your copyrighted material outside their relationship with you.
|
||||||
|
|
||||||
|
Conveying under any other circumstances is permitted solely under
|
||||||
|
the conditions stated below. Sublicensing is not allowed; section 10
|
||||||
|
makes it unnecessary.
|
||||||
|
|
||||||
|
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||||
|
|
||||||
|
No covered work shall be deemed part of an effective technological
|
||||||
|
measure under any applicable law fulfilling obligations under article
|
||||||
|
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||||
|
similar laws prohibiting or restricting circumvention of such
|
||||||
|
measures.
|
||||||
|
|
||||||
|
When you convey a covered work, you waive any legal power to forbid
|
||||||
|
circumvention of technological measures to the extent such circumvention
|
||||||
|
is effected by exercising rights under this License with respect to
|
||||||
|
the covered work, and you disclaim any intention to limit operation or
|
||||||
|
modification of the work as a means of enforcing, against the work's
|
||||||
|
users, your or third parties' legal rights to forbid circumvention of
|
||||||
|
technological measures.
|
||||||
|
|
||||||
|
4. Conveying Verbatim Copies.
|
||||||
|
|
||||||
|
You may convey verbatim copies of the Program's source code as you
|
||||||
|
receive it, in any medium, provided that you conspicuously and
|
||||||
|
appropriately publish on each copy an appropriate copyright notice;
|
||||||
|
keep intact all notices stating that this License and any
|
||||||
|
non-permissive terms added in accord with section 7 apply to the code;
|
||||||
|
keep intact all notices of the absence of any warranty; and give all
|
||||||
|
recipients a copy of this License along with the Program.
|
||||||
|
|
||||||
|
You may charge any price or no price for each copy that you convey,
|
||||||
|
and you may offer support or warranty protection for a fee.
|
||||||
|
|
||||||
|
5. Conveying Modified Source Versions.
|
||||||
|
|
||||||
|
You may convey a work based on the Program, or the modifications to
|
||||||
|
produce it from the Program, in the form of source code under the
|
||||||
|
terms of section 4, provided that you also meet all of these conditions:
|
||||||
|
|
||||||
|
a) The work must carry prominent notices stating that you modified
|
||||||
|
it, and giving a relevant date.
|
||||||
|
|
||||||
|
b) The work must carry prominent notices stating that it is
|
||||||
|
released under this License and any conditions added under section
|
||||||
|
7. This requirement modifies the requirement in section 4 to
|
||||||
|
"keep intact all notices".
|
||||||
|
|
||||||
|
c) You must license the entire work, as a whole, under this
|
||||||
|
License to anyone who comes into possession of a copy. This
|
||||||
|
License will therefore apply, along with any applicable section 7
|
||||||
|
additional terms, to the whole of the work, and all its parts,
|
||||||
|
regardless of how they are packaged. This License gives no
|
||||||
|
permission to license the work in any other way, but it does not
|
||||||
|
invalidate such permission if you have separately received it.
|
||||||
|
|
||||||
|
d) If the work has interactive user interfaces, each must display
|
||||||
|
Appropriate Legal Notices; however, if the Program has interactive
|
||||||
|
interfaces that do not display Appropriate Legal Notices, your
|
||||||
|
work need not make them do so.
|
||||||
|
|
||||||
|
A compilation of a covered work with other separate and independent
|
||||||
|
works, which are not by their nature extensions of the covered work,
|
||||||
|
and which are not combined with it such as to form a larger program,
|
||||||
|
in or on a volume of a storage or distribution medium, is called an
|
||||||
|
"aggregate" if the compilation and its resulting copyright are not
|
||||||
|
used to limit the access or legal rights of the compilation's users
|
||||||
|
beyond what the individual works permit. Inclusion of a covered work
|
||||||
|
in an aggregate does not cause this License to apply to the other
|
||||||
|
parts of the aggregate.
|
||||||
|
|
||||||
|
6. Conveying Non-Source Forms.
|
||||||
|
|
||||||
|
You may convey a covered work in object code form under the terms
|
||||||
|
of sections 4 and 5, provided that you also convey the
|
||||||
|
machine-readable Corresponding Source under the terms of this License,
|
||||||
|
in one of these ways:
|
||||||
|
|
||||||
|
a) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by the
|
||||||
|
Corresponding Source fixed on a durable physical medium
|
||||||
|
customarily used for software interchange.
|
||||||
|
|
||||||
|
b) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by a
|
||||||
|
written offer, valid for at least three years and valid for as
|
||||||
|
long as you offer spare parts or customer support for that product
|
||||||
|
model, to give anyone who possesses the object code either (1) a
|
||||||
|
copy of the Corresponding Source for all the software in the
|
||||||
|
product that is covered by this License, on a durable physical
|
||||||
|
medium customarily used for software interchange, for a price no
|
||||||
|
more than your reasonable cost of physically performing this
|
||||||
|
conveying of source, or (2) access to copy the
|
||||||
|
Corresponding Source from a network server at no charge.
|
||||||
|
|
||||||
|
c) Convey individual copies of the object code with a copy of the
|
||||||
|
written offer to provide the Corresponding Source. This
|
||||||
|
alternative is allowed only occasionally and noncommercially, and
|
||||||
|
only if you received the object code with such an offer, in accord
|
||||||
|
with subsection 6b.
|
||||||
|
|
||||||
|
d) Convey the object code by offering access from a designated
|
||||||
|
place (gratis or for a charge), and offer equivalent access to the
|
||||||
|
Corresponding Source in the same way through the same place at no
|
||||||
|
further charge. You need not require recipients to copy the
|
||||||
|
Corresponding Source along with the object code. If the place to
|
||||||
|
copy the object code is a network server, the Corresponding Source
|
||||||
|
may be on a different server (operated by you or a third party)
|
||||||
|
that supports equivalent copying facilities, provided you maintain
|
||||||
|
clear directions next to the object code saying where to find the
|
||||||
|
Corresponding Source. Regardless of what server hosts the
|
||||||
|
Corresponding Source, you remain obligated to ensure that it is
|
||||||
|
available for as long as needed to satisfy these requirements.
|
||||||
|
|
||||||
|
e) Convey the object code using peer-to-peer transmission, provided
|
||||||
|
you inform other peers where the object code and Corresponding
|
||||||
|
Source of the work are being offered to the general public at no
|
||||||
|
charge under subsection 6d.
|
||||||
|
|
||||||
|
A separable portion of the object code, whose source code is excluded
|
||||||
|
from the Corresponding Source as a System Library, need not be
|
||||||
|
included in conveying the object code work.
|
||||||
|
|
||||||
|
A "User Product" is either (1) a "consumer product", which means any
|
||||||
|
tangible personal property which is normally used for personal, family,
|
||||||
|
or household purposes, or (2) anything designed or sold for incorporation
|
||||||
|
into a dwelling. In determining whether a product is a consumer product,
|
||||||
|
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||||
|
product received by a particular user, "normally used" refers to a
|
||||||
|
typical or common use of that class of product, regardless of the status
|
||||||
|
of the particular user or of the way in which the particular user
|
||||||
|
actually uses, or expects or is expected to use, the product. A product
|
||||||
|
is a consumer product regardless of whether the product has substantial
|
||||||
|
commercial, industrial or non-consumer uses, unless such uses represent
|
||||||
|
the only significant mode of use of the product.
|
||||||
|
|
||||||
|
"Installation Information" for a User Product means any methods,
|
||||||
|
procedures, authorization keys, or other information required to install
|
||||||
|
and execute modified versions of a covered work in that User Product from
|
||||||
|
a modified version of its Corresponding Source. The information must
|
||||||
|
suffice to ensure that the continued functioning of the modified object
|
||||||
|
code is in no case prevented or interfered with solely because
|
||||||
|
modification has been made.
|
||||||
|
|
||||||
|
If you convey an object code work under this section in, or with, or
|
||||||
|
specifically for use in, a User Product, and the conveying occurs as
|
||||||
|
part of a transaction in which the right of possession and use of the
|
||||||
|
User Product is transferred to the recipient in perpetuity or for a
|
||||||
|
fixed term (regardless of how the transaction is characterized), the
|
||||||
|
Corresponding Source conveyed under this section must be accompanied
|
||||||
|
by the Installation Information. But this requirement does not apply
|
||||||
|
if neither you nor any third party retains the ability to install
|
||||||
|
modified object code on the User Product (for example, the work has
|
||||||
|
been installed in ROM).
|
||||||
|
|
||||||
|
The requirement to provide Installation Information does not include a
|
||||||
|
requirement to continue to provide support service, warranty, or updates
|
||||||
|
for a work that has been modified or installed by the recipient, or for
|
||||||
|
the User Product in which it has been modified or installed. Access to a
|
||||||
|
network may be denied when the modification itself materially and
|
||||||
|
adversely affects the operation of the network or violates the rules and
|
||||||
|
protocols for communication across the network.
|
||||||
|
|
||||||
|
Corresponding Source conveyed, and Installation Information provided,
|
||||||
|
in accord with this section must be in a format that is publicly
|
||||||
|
documented (and with an implementation available to the public in
|
||||||
|
source code form), and must require no special password or key for
|
||||||
|
unpacking, reading or copying.
|
||||||
|
|
||||||
|
7. Additional Terms.
|
||||||
|
|
||||||
|
"Additional permissions" are terms that supplement the terms of this
|
||||||
|
License by making exceptions from one or more of its conditions.
|
||||||
|
Additional permissions that are applicable to the entire Program shall
|
||||||
|
be treated as though they were included in this License, to the extent
|
||||||
|
that they are valid under applicable law. If additional permissions
|
||||||
|
apply only to part of the Program, that part may be used separately
|
||||||
|
under those permissions, but the entire Program remains governed by
|
||||||
|
this License without regard to the additional permissions.
|
||||||
|
|
||||||
|
When you convey a copy of a covered work, you may at your option
|
||||||
|
remove any additional permissions from that copy, or from any part of
|
||||||
|
it. (Additional permissions may be written to require their own
|
||||||
|
removal in certain cases when you modify the work.) You may place
|
||||||
|
additional permissions on material, added by you to a covered work,
|
||||||
|
for which you have or can give appropriate copyright permission.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, for material you
|
||||||
|
add to a covered work, you may (if authorized by the copyright holders of
|
||||||
|
that material) supplement the terms of this License with terms:
|
||||||
|
|
||||||
|
a) Disclaiming warranty or limiting liability differently from the
|
||||||
|
terms of sections 15 and 16 of this License; or
|
||||||
|
|
||||||
|
b) Requiring preservation of specified reasonable legal notices or
|
||||||
|
author attributions in that material or in the Appropriate Legal
|
||||||
|
Notices displayed by works containing it; or
|
||||||
|
|
||||||
|
c) Prohibiting misrepresentation of the origin of that material, or
|
||||||
|
requiring that modified versions of such material be marked in
|
||||||
|
reasonable ways as different from the original version; or
|
||||||
|
|
||||||
|
d) Limiting the use for publicity purposes of names of licensors or
|
||||||
|
authors of the material; or
|
||||||
|
|
||||||
|
e) Declining to grant rights under trademark law for use of some
|
||||||
|
trade names, trademarks, or service marks; or
|
||||||
|
|
||||||
|
f) Requiring indemnification of licensors and authors of that
|
||||||
|
material by anyone who conveys the material (or modified versions of
|
||||||
|
it) with contractual assumptions of liability to the recipient, for
|
||||||
|
any liability that these contractual assumptions directly impose on
|
||||||
|
those licensors and authors.
|
||||||
|
|
||||||
|
All other non-permissive additional terms are considered "further
|
||||||
|
restrictions" within the meaning of section 10. If the Program as you
|
||||||
|
received it, or any part of it, contains a notice stating that it is
|
||||||
|
governed by this License along with a term that is a further
|
||||||
|
restriction, you may remove that term. If a license document contains
|
||||||
|
a further restriction but permits relicensing or conveying under this
|
||||||
|
License, you may add to a covered work material governed by the terms
|
||||||
|
of that license document, provided that the further restriction does
|
||||||
|
not survive such relicensing or conveying.
|
||||||
|
|
||||||
|
If you add terms to a covered work in accord with this section, you
|
||||||
|
must place, in the relevant source files, a statement of the
|
||||||
|
additional terms that apply to those files, or a notice indicating
|
||||||
|
where to find the applicable terms.
|
||||||
|
|
||||||
|
Additional terms, permissive or non-permissive, may be stated in the
|
||||||
|
form of a separately written license, or stated as exceptions;
|
||||||
|
the above requirements apply either way.
|
||||||
|
|
||||||
|
8. Termination.
|
||||||
|
|
||||||
|
You may not propagate or modify a covered work except as expressly
|
||||||
|
provided under this License. Any attempt otherwise to propagate or
|
||||||
|
modify it is void, and will automatically terminate your rights under
|
||||||
|
this License (including any patent licenses granted under the third
|
||||||
|
paragraph of section 11).
|
||||||
|
|
||||||
|
However, if you cease all violation of this License, then your
|
||||||
|
license from a particular copyright holder is reinstated (a)
|
||||||
|
provisionally, unless and until the copyright holder explicitly and
|
||||||
|
finally terminates your license, and (b) permanently, if the copyright
|
||||||
|
holder fails to notify you of the violation by some reasonable means
|
||||||
|
prior to 60 days after the cessation.
|
||||||
|
|
||||||
|
Moreover, your license from a particular copyright holder is
|
||||||
|
reinstated permanently if the copyright holder notifies you of the
|
||||||
|
violation by some reasonable means, this is the first time you have
|
||||||
|
received notice of violation of this License (for any work) from that
|
||||||
|
copyright holder, and you cure the violation prior to 30 days after
|
||||||
|
your receipt of the notice.
|
||||||
|
|
||||||
|
Termination of your rights under this section does not terminate the
|
||||||
|
licenses of parties who have received copies or rights from you under
|
||||||
|
this License. If your rights have been terminated and not permanently
|
||||||
|
reinstated, you do not qualify to receive new licenses for the same
|
||||||
|
material under section 10.
|
||||||
|
|
||||||
|
9. Acceptance Not Required for Having Copies.
|
||||||
|
|
||||||
|
You are not required to accept this License in order to receive or
|
||||||
|
run a copy of the Program. Ancillary propagation of a covered work
|
||||||
|
occurring solely as a consequence of using peer-to-peer transmission
|
||||||
|
to receive a copy likewise does not require acceptance. However,
|
||||||
|
nothing other than this License grants you permission to propagate or
|
||||||
|
modify any covered work. These actions infringe copyright if you do
|
||||||
|
not accept this License. Therefore, by modifying or propagating a
|
||||||
|
covered work, you indicate your acceptance of this License to do so.
|
||||||
|
|
||||||
|
10. Automatic Licensing of Downstream Recipients.
|
||||||
|
|
||||||
|
Each time you convey a covered work, the recipient automatically
|
||||||
|
receives a license from the original licensors, to run, modify and
|
||||||
|
propagate that work, subject to this License. You are not responsible
|
||||||
|
for enforcing compliance by third parties with this License.
|
||||||
|
|
||||||
|
An "entity transaction" is a transaction transferring control of an
|
||||||
|
organization, or substantially all assets of one, or subdividing an
|
||||||
|
organization, or merging organizations. If propagation of a covered
|
||||||
|
work results from an entity transaction, each party to that
|
||||||
|
transaction who receives a copy of the work also receives whatever
|
||||||
|
licenses to the work the party's predecessor in interest had or could
|
||||||
|
give under the previous paragraph, plus a right to possession of the
|
||||||
|
Corresponding Source of the work from the predecessor in interest, if
|
||||||
|
the predecessor has it or can get it with reasonable efforts.
|
||||||
|
|
||||||
|
You may not impose any further restrictions on the exercise of the
|
||||||
|
rights granted or affirmed under this License. For example, you may
|
||||||
|
not impose a license fee, royalty, or other charge for exercise of
|
||||||
|
rights granted under this License, and you may not initiate litigation
|
||||||
|
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||||
|
any patent claim is infringed by making, using, selling, offering for
|
||||||
|
sale, or importing the Program or any portion of it.
|
||||||
|
|
||||||
|
11. Patents.
|
||||||
|
|
||||||
|
A "contributor" is a copyright holder who authorizes use under this
|
||||||
|
License of the Program or a work on which the Program is based. The
|
||||||
|
work thus licensed is called the contributor's "contributor version".
|
||||||
|
|
||||||
|
A contributor's "essential patent claims" are all patent claims
|
||||||
|
owned or controlled by the contributor, whether already acquired or
|
||||||
|
hereafter acquired, that would be infringed by some manner, permitted
|
||||||
|
by this License, of making, using, or selling its contributor version,
|
||||||
|
but do not include claims that would be infringed only as a
|
||||||
|
consequence of further modification of the contributor version. For
|
||||||
|
purposes of this definition, "control" includes the right to grant
|
||||||
|
patent sublicenses in a manner consistent with the requirements of
|
||||||
|
this License.
|
||||||
|
|
||||||
|
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||||
|
patent license under the contributor's essential patent claims, to
|
||||||
|
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||||
|
propagate the contents of its contributor version.
|
||||||
|
|
||||||
|
In the following three paragraphs, a "patent license" is any express
|
||||||
|
agreement or commitment, however denominated, not to enforce a patent
|
||||||
|
(such as an express permission to practice a patent or covenant not to
|
||||||
|
sue for patent infringement). To "grant" such a patent license to a
|
||||||
|
party means to make such an agreement or commitment not to enforce a
|
||||||
|
patent against the party.
|
||||||
|
|
||||||
|
If you convey a covered work, knowingly relying on a patent license,
|
||||||
|
and the Corresponding Source of the work is not available for anyone
|
||||||
|
to copy, free of charge and under the terms of this License, through a
|
||||||
|
publicly available network server or other readily accessible means,
|
||||||
|
then you must either (1) cause the Corresponding Source to be so
|
||||||
|
available, or (2) arrange to deprive yourself of the benefit of the
|
||||||
|
patent license for this particular work, or (3) arrange, in a manner
|
||||||
|
consistent with the requirements of this License, to extend the patent
|
||||||
|
license to downstream recipients. "Knowingly relying" means you have
|
||||||
|
actual knowledge that, but for the patent license, your conveying the
|
||||||
|
covered work in a country, or your recipient's use of the covered work
|
||||||
|
in a country, would infringe one or more identifiable patents in that
|
||||||
|
country that you have reason to believe are valid.
|
||||||
|
|
||||||
|
If, pursuant to or in connection with a single transaction or
|
||||||
|
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||||
|
covered work, and grant a patent license to some of the parties
|
||||||
|
receiving the covered work authorizing them to use, propagate, modify
|
||||||
|
or convey a specific copy of the covered work, then the patent license
|
||||||
|
you grant is automatically extended to all recipients of the covered
|
||||||
|
work and works based on it.
|
||||||
|
|
||||||
|
A patent license is "discriminatory" if it does not include within
|
||||||
|
the scope of its coverage, prohibits the exercise of, or is
|
||||||
|
conditioned on the non-exercise of one or more of the rights that are
|
||||||
|
specifically granted under this License. You may not convey a covered
|
||||||
|
work if you are a party to an arrangement with a third party that is
|
||||||
|
in the business of distributing software, under which you make payment
|
||||||
|
to the third party based on the extent of your activity of conveying
|
||||||
|
the work, and under which the third party grants, to any of the
|
||||||
|
parties who would receive the covered work from you, a discriminatory
|
||||||
|
patent license (a) in connection with copies of the covered work
|
||||||
|
conveyed by you (or copies made from those copies), or (b) primarily
|
||||||
|
for and in connection with specific products or compilations that
|
||||||
|
contain the covered work, unless you entered into that arrangement,
|
||||||
|
or that patent license was granted, prior to 28 March 2007.
|
||||||
|
|
||||||
|
Nothing in this License shall be construed as excluding or limiting
|
||||||
|
any implied license or other defenses to infringement that may
|
||||||
|
otherwise be available to you under applicable patent law.
|
||||||
|
|
||||||
|
12. No Surrender of Others' Freedom.
|
||||||
|
|
||||||
|
If conditions are imposed on you (whether by court order, agreement or
|
||||||
|
otherwise) that contradict the conditions of this License, they do not
|
||||||
|
excuse you from the conditions of this License. If you cannot convey a
|
||||||
|
covered work so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you may
|
||||||
|
not convey it at all. For example, if you agree to terms that obligate you
|
||||||
|
to collect a royalty for further conveying from those to whom you convey
|
||||||
|
the Program, the only way you could satisfy both those terms and this
|
||||||
|
License would be to refrain entirely from conveying the Program.
|
||||||
|
|
||||||
|
13. Use with the GNU Affero General Public License.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, you have
|
||||||
|
permission to link or combine any covered work with a work licensed
|
||||||
|
under version 3 of the GNU Affero General Public License into a single
|
||||||
|
combined work, and to convey the resulting work. The terms of this
|
||||||
|
License will continue to apply to the part which is the covered work,
|
||||||
|
but the special requirements of the GNU Affero General Public License,
|
||||||
|
section 13, concerning interaction through a network will apply to the
|
||||||
|
combination as such.
|
||||||
|
|
||||||
|
14. Revised Versions of this License.
|
||||||
|
|
||||||
|
The Free Software Foundation may publish revised and/or new versions of
|
||||||
|
the GNU General Public License from time to time. Such new versions will
|
||||||
|
be similar in spirit to the present version, but may differ in detail to
|
||||||
|
address new problems or concerns.
|
||||||
|
|
||||||
|
Each version is given a distinguishing version number. If the
|
||||||
|
Program specifies that a certain numbered version of the GNU General
|
||||||
|
Public License "or any later version" applies to it, you have the
|
||||||
|
option of following the terms and conditions either of that numbered
|
||||||
|
version or of any later version published by the Free Software
|
||||||
|
Foundation. If the Program does not specify a version number of the
|
||||||
|
GNU General Public License, you may choose any version ever published
|
||||||
|
by the Free Software Foundation.
|
||||||
|
|
||||||
|
If the Program specifies that a proxy can decide which future
|
||||||
|
versions of the GNU General Public License can be used, that proxy's
|
||||||
|
public statement of acceptance of a version permanently authorizes you
|
||||||
|
to choose that version for the Program.
|
||||||
|
|
||||||
|
Later license versions may give you additional or different
|
||||||
|
permissions. However, no additional obligations are imposed on any
|
||||||
|
author or copyright holder as a result of your choosing to follow a
|
||||||
|
later version.
|
||||||
|
|
||||||
|
15. Disclaimer of Warranty.
|
||||||
|
|
||||||
|
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||||
|
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||||
|
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||||
|
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||||
|
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||||
|
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||||
|
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||||
|
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
16. Limitation of Liability.
|
||||||
|
|
||||||
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||||
|
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||||
|
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||||
|
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||||
|
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||||
|
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||||
|
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||||
|
SUCH DAMAGES.
|
||||||
|
|
||||||
|
17. Interpretation of Sections 15 and 16.
|
||||||
|
|
||||||
|
If the disclaimer of warranty and limitation of liability provided
|
||||||
|
above cannot be given local legal effect according to their terms,
|
||||||
|
reviewing courts shall apply local law that most closely approximates
|
||||||
|
an absolute waiver of all civil liability in connection with the
|
||||||
|
Program, unless a warranty or assumption of liability accompanies a
|
||||||
|
copy of the Program in return for a fee.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Programs
|
||||||
|
|
||||||
|
If you develop a new program, and you want it to be of the greatest
|
||||||
|
possible use to the public, the best way to achieve this is to make it
|
||||||
|
free software which everyone can redistribute and change under these terms.
|
||||||
|
|
||||||
|
To do so, attach the following notices to the program. It is safest
|
||||||
|
to attach them to the start of each source file to most effectively
|
||||||
|
state the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation, either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If the program does terminal interaction, make it output a short
|
||||||
|
notice like this when it starts in an interactive mode:
|
||||||
|
|
||||||
|
<program> Copyright (C) <year> <name of author>
|
||||||
|
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||||
|
This is free software, and you are welcome to redistribute it
|
||||||
|
under certain conditions; type `show c' for details.
|
||||||
|
|
||||||
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||||
|
parts of the General Public License. Of course, your program's commands
|
||||||
|
might be different; for a GUI interface, you would use an "about box".
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or school,
|
||||||
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||||
|
For more information on this, and how to apply and follow the GNU GPL, see
|
||||||
|
<http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
The GNU General Public License does not permit incorporating your program
|
||||||
|
into proprietary programs. If your program is a subroutine library, you
|
||||||
|
may consider it more useful to permit linking proprietary applications with
|
||||||
|
the library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License. But first, please read
|
||||||
|
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
||||||
2
SimpleTests/.gitignore
vendored
2
SimpleTests/.gitignore
vendored
@ -1,2 +0,0 @@
|
|||||||
/testfile.png.crypt
|
|
||||||
/testfile.png.clear.png
|
|
||||||
@ -1,171 +0,0 @@
|
|||||||
<?xml version="1.0" encoding="utf-8"?>
|
|
||||||
<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
|
|
||||||
<ItemGroup Label="ProjectConfigurations">
|
|
||||||
<ProjectConfiguration Include="Debug|Win32">
|
|
||||||
<Configuration>Debug</Configuration>
|
|
||||||
<Platform>Win32</Platform>
|
|
||||||
</ProjectConfiguration>
|
|
||||||
<ProjectConfiguration Include="Release|Win32">
|
|
||||||
<Configuration>Release</Configuration>
|
|
||||||
<Platform>Win32</Platform>
|
|
||||||
</ProjectConfiguration>
|
|
||||||
<ProjectConfiguration Include="Debug|x64">
|
|
||||||
<Configuration>Debug</Configuration>
|
|
||||||
<Platform>x64</Platform>
|
|
||||||
</ProjectConfiguration>
|
|
||||||
<ProjectConfiguration Include="Release|x64">
|
|
||||||
<Configuration>Release</Configuration>
|
|
||||||
<Platform>x64</Platform>
|
|
||||||
</ProjectConfiguration>
|
|
||||||
</ItemGroup>
|
|
||||||
<PropertyGroup Label="Globals">
|
|
||||||
<VCProjectVersion>16.0</VCProjectVersion>
|
|
||||||
<ProjectGuid>{9AE03058-3A1E-461E-A2C2-33C5C9D0F4CB}</ProjectGuid>
|
|
||||||
<Keyword>Win32Proj</Keyword>
|
|
||||||
<RootNamespace>SimpleTests</RootNamespace>
|
|
||||||
<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
|
|
||||||
<ProjectSubType>NativeUnitTestProject</ProjectSubType>
|
|
||||||
</PropertyGroup>
|
|
||||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
|
|
||||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
|
|
||||||
<ConfigurationType>DynamicLibrary</ConfigurationType>
|
|
||||||
<UseDebugLibraries>true</UseDebugLibraries>
|
|
||||||
<PlatformToolset>v142</PlatformToolset>
|
|
||||||
<CharacterSet>Unicode</CharacterSet>
|
|
||||||
<UseOfMfc>false</UseOfMfc>
|
|
||||||
</PropertyGroup>
|
|
||||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
|
|
||||||
<ConfigurationType>DynamicLibrary</ConfigurationType>
|
|
||||||
<UseDebugLibraries>false</UseDebugLibraries>
|
|
||||||
<PlatformToolset>v142</PlatformToolset>
|
|
||||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
|
||||||
<CharacterSet>Unicode</CharacterSet>
|
|
||||||
<UseOfMfc>false</UseOfMfc>
|
|
||||||
</PropertyGroup>
|
|
||||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
|
|
||||||
<ConfigurationType>DynamicLibrary</ConfigurationType>
|
|
||||||
<UseDebugLibraries>true</UseDebugLibraries>
|
|
||||||
<PlatformToolset>v142</PlatformToolset>
|
|
||||||
<CharacterSet>Unicode</CharacterSet>
|
|
||||||
<UseOfMfc>false</UseOfMfc>
|
|
||||||
</PropertyGroup>
|
|
||||||
<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
|
|
||||||
<ConfigurationType>DynamicLibrary</ConfigurationType>
|
|
||||||
<UseDebugLibraries>false</UseDebugLibraries>
|
|
||||||
<PlatformToolset>v142</PlatformToolset>
|
|
||||||
<WholeProgramOptimization>true</WholeProgramOptimization>
|
|
||||||
<CharacterSet>Unicode</CharacterSet>
|
|
||||||
<UseOfMfc>false</UseOfMfc>
|
|
||||||
</PropertyGroup>
|
|
||||||
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
|
|
||||||
<ImportGroup Label="ExtensionSettings">
|
|
||||||
</ImportGroup>
|
|
||||||
<ImportGroup Label="Shared">
|
|
||||||
</ImportGroup>
|
|
||||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
|
|
||||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
|
||||||
</ImportGroup>
|
|
||||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
|
|
||||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
|
||||||
</ImportGroup>
|
|
||||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
|
|
||||||
<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
|
|
||||||
</ImportGroup>
|
|
||||||
<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
|
|
||||||
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||||||
@ -1,28 +0,0 @@
|
|||||||
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|
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|
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</Project>
|
|
||||||
690
readme.md
690
readme.md
@ -101,29 +101,679 @@ knowing the password(=cleartext) to begin with. *You could make a hashfunction o
|
|||||||
|
|
||||||
## LICENSE
|
## LICENSE
|
||||||
```
|
```
|
||||||
BSD 2-Clause License
|
GNU GENERAL PUBLIC LICENSE
|
||||||
|
Version 3, 29 June 2007
|
||||||
|
|
||||||
Copyright (c) 2021, Leon Etienne
|
Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
|
||||||
All rights reserved.
|
Everyone is permitted to copy and distribute verbatim copies
|
||||||
|
of this license document, but changing it is not allowed.
|
||||||
|
|
||||||
Redistribution and use in source and binary forms, with or without
|
Preamble
|
||||||
modification, are permitted provided that the following conditions are met:
|
|
||||||
|
|
||||||
1. Redistributions of source code must retain the above copyright notice, this
|
The GNU General Public License is a free, copyleft license for
|
||||||
list of conditions and the following disclaimer.
|
software and other kinds of works.
|
||||||
|
|
||||||
2. Redistributions in binary form must reproduce the above copyright notice,
|
The licenses for most software and other practical works are designed
|
||||||
this list of conditions and the following disclaimer in the documentation
|
to take away your freedom to share and change the works. By contrast,
|
||||||
and/or other materials provided with the distribution.
|
the GNU General Public License is intended to guarantee your freedom to
|
||||||
|
share and change all versions of a program--to make sure it remains free
|
||||||
|
software for all its users. We, the Free Software Foundation, use the
|
||||||
|
GNU General Public License for most of our software; it applies also to
|
||||||
|
any other work released this way by its authors. You can apply it to
|
||||||
|
your programs, too.
|
||||||
|
|
||||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
When we speak of free software, we are referring to freedom, not
|
||||||
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
price. Our General Public Licenses are designed to make sure that you
|
||||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
have the freedom to distribute copies of free software (and charge for
|
||||||
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
them if you wish), that you receive source code or can get it if you
|
||||||
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
want it, that you can change the software or use pieces of it in new
|
||||||
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
free programs, and that you know you can do these things.
|
||||||
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
||||||
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
To protect your rights, we need to prevent others from denying you
|
||||||
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
these rights or asking you to surrender the rights. Therefore, you have
|
||||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
certain responsibilities if you distribute copies of the software, or if
|
||||||
|
you modify it: responsibilities to respect the freedom of others.
|
||||||
|
|
||||||
|
For example, if you distribute copies of such a program, whether
|
||||||
|
gratis or for a fee, you must pass on to the recipients the same
|
||||||
|
freedoms that you received. You must make sure that they, too, receive
|
||||||
|
or can get the source code. And you must show them these terms so they
|
||||||
|
know their rights.
|
||||||
|
|
||||||
|
Developers that use the GNU GPL protect your rights with two steps:
|
||||||
|
(1) assert copyright on the software, and (2) offer you this License
|
||||||
|
giving you legal permission to copy, distribute and/or modify it.
|
||||||
|
|
||||||
|
For the developers' and authors' protection, the GPL clearly explains
|
||||||
|
that there is no warranty for this free software. For both users' and
|
||||||
|
authors' sake, the GPL requires that modified versions be marked as
|
||||||
|
changed, so that their problems will not be attributed erroneously to
|
||||||
|
authors of previous versions.
|
||||||
|
|
||||||
|
Some devices are designed to deny users access to install or run
|
||||||
|
modified versions of the software inside them, although the manufacturer
|
||||||
|
can do so. This is fundamentally incompatible with the aim of
|
||||||
|
protecting users' freedom to change the software. The systematic
|
||||||
|
pattern of such abuse occurs in the area of products for individuals to
|
||||||
|
use, which is precisely where it is most unacceptable. Therefore, we
|
||||||
|
have designed this version of the GPL to prohibit the practice for those
|
||||||
|
products. If such problems arise substantially in other domains, we
|
||||||
|
stand ready to extend this provision to those domains in future versions
|
||||||
|
of the GPL, as needed to protect the freedom of users.
|
||||||
|
|
||||||
|
Finally, every program is threatened constantly by software patents.
|
||||||
|
States should not allow patents to restrict development and use of
|
||||||
|
software on general-purpose computers, but in those that do, we wish to
|
||||||
|
avoid the special danger that patents applied to a free program could
|
||||||
|
make it effectively proprietary. To prevent this, the GPL assures that
|
||||||
|
patents cannot be used to render the program non-free.
|
||||||
|
|
||||||
|
The precise terms and conditions for copying, distribution and
|
||||||
|
modification follow.
|
||||||
|
|
||||||
|
TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
0. Definitions.
|
||||||
|
|
||||||
|
"This License" refers to version 3 of the GNU General Public License.
|
||||||
|
|
||||||
|
"Copyright" also means copyright-like laws that apply to other kinds of
|
||||||
|
works, such as semiconductor masks.
|
||||||
|
|
||||||
|
"The Program" refers to any copyrightable work licensed under this
|
||||||
|
License. Each licensee is addressed as "you". "Licensees" and
|
||||||
|
"recipients" may be individuals or organizations.
|
||||||
|
|
||||||
|
To "modify" a work means to copy from or adapt all or part of the work
|
||||||
|
in a fashion requiring copyright permission, other than the making of an
|
||||||
|
exact copy. The resulting work is called a "modified version" of the
|
||||||
|
earlier work or a work "based on" the earlier work.
|
||||||
|
|
||||||
|
A "covered work" means either the unmodified Program or a work based
|
||||||
|
on the Program.
|
||||||
|
|
||||||
|
To "propagate" a work means to do anything with it that, without
|
||||||
|
permission, would make you directly or secondarily liable for
|
||||||
|
infringement under applicable copyright law, except executing it on a
|
||||||
|
computer or modifying a private copy. Propagation includes copying,
|
||||||
|
distribution (with or without modification), making available to the
|
||||||
|
public, and in some countries other activities as well.
|
||||||
|
|
||||||
|
To "convey" a work means any kind of propagation that enables other
|
||||||
|
parties to make or receive copies. Mere interaction with a user through
|
||||||
|
a computer network, with no transfer of a copy, is not conveying.
|
||||||
|
|
||||||
|
An interactive user interface displays "Appropriate Legal Notices"
|
||||||
|
to the extent that it includes a convenient and prominently visible
|
||||||
|
feature that (1) displays an appropriate copyright notice, and (2)
|
||||||
|
tells the user that there is no warranty for the work (except to the
|
||||||
|
extent that warranties are provided), that licensees may convey the
|
||||||
|
work under this License, and how to view a copy of this License. If
|
||||||
|
the interface presents a list of user commands or options, such as a
|
||||||
|
menu, a prominent item in the list meets this criterion.
|
||||||
|
|
||||||
|
1. Source Code.
|
||||||
|
|
||||||
|
The "source code" for a work means the preferred form of the work
|
||||||
|
for making modifications to it. "Object code" means any non-source
|
||||||
|
form of a work.
|
||||||
|
|
||||||
|
A "Standard Interface" means an interface that either is an official
|
||||||
|
standard defined by a recognized standards body, or, in the case of
|
||||||
|
interfaces specified for a particular programming language, one that
|
||||||
|
is widely used among developers working in that language.
|
||||||
|
|
||||||
|
The "System Libraries" of an executable work include anything, other
|
||||||
|
than the work as a whole, that (a) is included in the normal form of
|
||||||
|
packaging a Major Component, but which is not part of that Major
|
||||||
|
Component, and (b) serves only to enable use of the work with that
|
||||||
|
Major Component, or to implement a Standard Interface for which an
|
||||||
|
implementation is available to the public in source code form. A
|
||||||
|
"Major Component", in this context, means a major essential component
|
||||||
|
(kernel, window system, and so on) of the specific operating system
|
||||||
|
(if any) on which the executable work runs, or a compiler used to
|
||||||
|
produce the work, or an object code interpreter used to run it.
|
||||||
|
|
||||||
|
The "Corresponding Source" for a work in object code form means all
|
||||||
|
the source code needed to generate, install, and (for an executable
|
||||||
|
work) run the object code and to modify the work, including scripts to
|
||||||
|
control those activities. However, it does not include the work's
|
||||||
|
System Libraries, or general-purpose tools or generally available free
|
||||||
|
programs which are used unmodified in performing those activities but
|
||||||
|
which are not part of the work. For example, Corresponding Source
|
||||||
|
includes interface definition files associated with source files for
|
||||||
|
the work, and the source code for shared libraries and dynamically
|
||||||
|
linked subprograms that the work is specifically designed to require,
|
||||||
|
such as by intimate data communication or control flow between those
|
||||||
|
subprograms and other parts of the work.
|
||||||
|
|
||||||
|
The Corresponding Source need not include anything that users
|
||||||
|
can regenerate automatically from other parts of the Corresponding
|
||||||
|
Source.
|
||||||
|
|
||||||
|
The Corresponding Source for a work in source code form is that
|
||||||
|
same work.
|
||||||
|
|
||||||
|
2. Basic Permissions.
|
||||||
|
|
||||||
|
All rights granted under this License are granted for the term of
|
||||||
|
copyright on the Program, and are irrevocable provided the stated
|
||||||
|
conditions are met. This License explicitly affirms your unlimited
|
||||||
|
permission to run the unmodified Program. The output from running a
|
||||||
|
covered work is covered by this License only if the output, given its
|
||||||
|
content, constitutes a covered work. This License acknowledges your
|
||||||
|
rights of fair use or other equivalent, as provided by copyright law.
|
||||||
|
|
||||||
|
You may make, run and propagate covered works that you do not
|
||||||
|
convey, without conditions so long as your license otherwise remains
|
||||||
|
in force. You may convey covered works to others for the sole purpose
|
||||||
|
of having them make modifications exclusively for you, or provide you
|
||||||
|
with facilities for running those works, provided that you comply with
|
||||||
|
the terms of this License in conveying all material for which you do
|
||||||
|
not control copyright. Those thus making or running the covered works
|
||||||
|
for you must do so exclusively on your behalf, under your direction
|
||||||
|
and control, on terms that prohibit them from making any copies of
|
||||||
|
your copyrighted material outside their relationship with you.
|
||||||
|
|
||||||
|
Conveying under any other circumstances is permitted solely under
|
||||||
|
the conditions stated below. Sublicensing is not allowed; section 10
|
||||||
|
makes it unnecessary.
|
||||||
|
|
||||||
|
3. Protecting Users' Legal Rights From Anti-Circumvention Law.
|
||||||
|
|
||||||
|
No covered work shall be deemed part of an effective technological
|
||||||
|
measure under any applicable law fulfilling obligations under article
|
||||||
|
11 of the WIPO copyright treaty adopted on 20 December 1996, or
|
||||||
|
similar laws prohibiting or restricting circumvention of such
|
||||||
|
measures.
|
||||||
|
|
||||||
|
When you convey a covered work, you waive any legal power to forbid
|
||||||
|
circumvention of technological measures to the extent such circumvention
|
||||||
|
is effected by exercising rights under this License with respect to
|
||||||
|
the covered work, and you disclaim any intention to limit operation or
|
||||||
|
modification of the work as a means of enforcing, against the work's
|
||||||
|
users, your or third parties' legal rights to forbid circumvention of
|
||||||
|
technological measures.
|
||||||
|
|
||||||
|
4. Conveying Verbatim Copies.
|
||||||
|
|
||||||
|
You may convey verbatim copies of the Program's source code as you
|
||||||
|
receive it, in any medium, provided that you conspicuously and
|
||||||
|
appropriately publish on each copy an appropriate copyright notice;
|
||||||
|
keep intact all notices stating that this License and any
|
||||||
|
non-permissive terms added in accord with section 7 apply to the code;
|
||||||
|
keep intact all notices of the absence of any warranty; and give all
|
||||||
|
recipients a copy of this License along with the Program.
|
||||||
|
|
||||||
|
You may charge any price or no price for each copy that you convey,
|
||||||
|
and you may offer support or warranty protection for a fee.
|
||||||
|
|
||||||
|
5. Conveying Modified Source Versions.
|
||||||
|
|
||||||
|
You may convey a work based on the Program, or the modifications to
|
||||||
|
produce it from the Program, in the form of source code under the
|
||||||
|
terms of section 4, provided that you also meet all of these conditions:
|
||||||
|
|
||||||
|
a) The work must carry prominent notices stating that you modified
|
||||||
|
it, and giving a relevant date.
|
||||||
|
|
||||||
|
b) The work must carry prominent notices stating that it is
|
||||||
|
released under this License and any conditions added under section
|
||||||
|
7. This requirement modifies the requirement in section 4 to
|
||||||
|
"keep intact all notices".
|
||||||
|
|
||||||
|
c) You must license the entire work, as a whole, under this
|
||||||
|
License to anyone who comes into possession of a copy. This
|
||||||
|
License will therefore apply, along with any applicable section 7
|
||||||
|
additional terms, to the whole of the work, and all its parts,
|
||||||
|
regardless of how they are packaged. This License gives no
|
||||||
|
permission to license the work in any other way, but it does not
|
||||||
|
invalidate such permission if you have separately received it.
|
||||||
|
|
||||||
|
d) If the work has interactive user interfaces, each must display
|
||||||
|
Appropriate Legal Notices; however, if the Program has interactive
|
||||||
|
interfaces that do not display Appropriate Legal Notices, your
|
||||||
|
work need not make them do so.
|
||||||
|
|
||||||
|
A compilation of a covered work with other separate and independent
|
||||||
|
works, which are not by their nature extensions of the covered work,
|
||||||
|
and which are not combined with it such as to form a larger program,
|
||||||
|
in or on a volume of a storage or distribution medium, is called an
|
||||||
|
"aggregate" if the compilation and its resulting copyright are not
|
||||||
|
used to limit the access or legal rights of the compilation's users
|
||||||
|
beyond what the individual works permit. Inclusion of a covered work
|
||||||
|
in an aggregate does not cause this License to apply to the other
|
||||||
|
parts of the aggregate.
|
||||||
|
|
||||||
|
6. Conveying Non-Source Forms.
|
||||||
|
|
||||||
|
You may convey a covered work in object code form under the terms
|
||||||
|
of sections 4 and 5, provided that you also convey the
|
||||||
|
machine-readable Corresponding Source under the terms of this License,
|
||||||
|
in one of these ways:
|
||||||
|
|
||||||
|
a) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by the
|
||||||
|
Corresponding Source fixed on a durable physical medium
|
||||||
|
customarily used for software interchange.
|
||||||
|
|
||||||
|
b) Convey the object code in, or embodied in, a physical product
|
||||||
|
(including a physical distribution medium), accompanied by a
|
||||||
|
written offer, valid for at least three years and valid for as
|
||||||
|
long as you offer spare parts or customer support for that product
|
||||||
|
model, to give anyone who possesses the object code either (1) a
|
||||||
|
copy of the Corresponding Source for all the software in the
|
||||||
|
product that is covered by this License, on a durable physical
|
||||||
|
medium customarily used for software interchange, for a price no
|
||||||
|
more than your reasonable cost of physically performing this
|
||||||
|
conveying of source, or (2) access to copy the
|
||||||
|
Corresponding Source from a network server at no charge.
|
||||||
|
|
||||||
|
c) Convey individual copies of the object code with a copy of the
|
||||||
|
written offer to provide the Corresponding Source. This
|
||||||
|
alternative is allowed only occasionally and noncommercially, and
|
||||||
|
only if you received the object code with such an offer, in accord
|
||||||
|
with subsection 6b.
|
||||||
|
|
||||||
|
d) Convey the object code by offering access from a designated
|
||||||
|
place (gratis or for a charge), and offer equivalent access to the
|
||||||
|
Corresponding Source in the same way through the same place at no
|
||||||
|
further charge. You need not require recipients to copy the
|
||||||
|
Corresponding Source along with the object code. If the place to
|
||||||
|
copy the object code is a network server, the Corresponding Source
|
||||||
|
may be on a different server (operated by you or a third party)
|
||||||
|
that supports equivalent copying facilities, provided you maintain
|
||||||
|
clear directions next to the object code saying where to find the
|
||||||
|
Corresponding Source. Regardless of what server hosts the
|
||||||
|
Corresponding Source, you remain obligated to ensure that it is
|
||||||
|
available for as long as needed to satisfy these requirements.
|
||||||
|
|
||||||
|
e) Convey the object code using peer-to-peer transmission, provided
|
||||||
|
you inform other peers where the object code and Corresponding
|
||||||
|
Source of the work are being offered to the general public at no
|
||||||
|
charge under subsection 6d.
|
||||||
|
|
||||||
|
A separable portion of the object code, whose source code is excluded
|
||||||
|
from the Corresponding Source as a System Library, need not be
|
||||||
|
included in conveying the object code work.
|
||||||
|
|
||||||
|
A "User Product" is either (1) a "consumer product", which means any
|
||||||
|
tangible personal property which is normally used for personal, family,
|
||||||
|
or household purposes, or (2) anything designed or sold for incorporation
|
||||||
|
into a dwelling. In determining whether a product is a consumer product,
|
||||||
|
doubtful cases shall be resolved in favor of coverage. For a particular
|
||||||
|
product received by a particular user, "normally used" refers to a
|
||||||
|
typical or common use of that class of product, regardless of the status
|
||||||
|
of the particular user or of the way in which the particular user
|
||||||
|
actually uses, or expects or is expected to use, the product. A product
|
||||||
|
is a consumer product regardless of whether the product has substantial
|
||||||
|
commercial, industrial or non-consumer uses, unless such uses represent
|
||||||
|
the only significant mode of use of the product.
|
||||||
|
|
||||||
|
"Installation Information" for a User Product means any methods,
|
||||||
|
procedures, authorization keys, or other information required to install
|
||||||
|
and execute modified versions of a covered work in that User Product from
|
||||||
|
a modified version of its Corresponding Source. The information must
|
||||||
|
suffice to ensure that the continued functioning of the modified object
|
||||||
|
code is in no case prevented or interfered with solely because
|
||||||
|
modification has been made.
|
||||||
|
|
||||||
|
If you convey an object code work under this section in, or with, or
|
||||||
|
specifically for use in, a User Product, and the conveying occurs as
|
||||||
|
part of a transaction in which the right of possession and use of the
|
||||||
|
User Product is transferred to the recipient in perpetuity or for a
|
||||||
|
fixed term (regardless of how the transaction is characterized), the
|
||||||
|
Corresponding Source conveyed under this section must be accompanied
|
||||||
|
by the Installation Information. But this requirement does not apply
|
||||||
|
if neither you nor any third party retains the ability to install
|
||||||
|
modified object code on the User Product (for example, the work has
|
||||||
|
been installed in ROM).
|
||||||
|
|
||||||
|
The requirement to provide Installation Information does not include a
|
||||||
|
requirement to continue to provide support service, warranty, or updates
|
||||||
|
for a work that has been modified or installed by the recipient, or for
|
||||||
|
the User Product in which it has been modified or installed. Access to a
|
||||||
|
network may be denied when the modification itself materially and
|
||||||
|
adversely affects the operation of the network or violates the rules and
|
||||||
|
protocols for communication across the network.
|
||||||
|
|
||||||
|
Corresponding Source conveyed, and Installation Information provided,
|
||||||
|
in accord with this section must be in a format that is publicly
|
||||||
|
documented (and with an implementation available to the public in
|
||||||
|
source code form), and must require no special password or key for
|
||||||
|
unpacking, reading or copying.
|
||||||
|
|
||||||
|
7. Additional Terms.
|
||||||
|
|
||||||
|
"Additional permissions" are terms that supplement the terms of this
|
||||||
|
License by making exceptions from one or more of its conditions.
|
||||||
|
Additional permissions that are applicable to the entire Program shall
|
||||||
|
be treated as though they were included in this License, to the extent
|
||||||
|
that they are valid under applicable law. If additional permissions
|
||||||
|
apply only to part of the Program, that part may be used separately
|
||||||
|
under those permissions, but the entire Program remains governed by
|
||||||
|
this License without regard to the additional permissions.
|
||||||
|
|
||||||
|
When you convey a copy of a covered work, you may at your option
|
||||||
|
remove any additional permissions from that copy, or from any part of
|
||||||
|
it. (Additional permissions may be written to require their own
|
||||||
|
removal in certain cases when you modify the work.) You may place
|
||||||
|
additional permissions on material, added by you to a covered work,
|
||||||
|
for which you have or can give appropriate copyright permission.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, for material you
|
||||||
|
add to a covered work, you may (if authorized by the copyright holders of
|
||||||
|
that material) supplement the terms of this License with terms:
|
||||||
|
|
||||||
|
a) Disclaiming warranty or limiting liability differently from the
|
||||||
|
terms of sections 15 and 16 of this License; or
|
||||||
|
|
||||||
|
b) Requiring preservation of specified reasonable legal notices or
|
||||||
|
author attributions in that material or in the Appropriate Legal
|
||||||
|
Notices displayed by works containing it; or
|
||||||
|
|
||||||
|
c) Prohibiting misrepresentation of the origin of that material, or
|
||||||
|
requiring that modified versions of such material be marked in
|
||||||
|
reasonable ways as different from the original version; or
|
||||||
|
|
||||||
|
d) Limiting the use for publicity purposes of names of licensors or
|
||||||
|
authors of the material; or
|
||||||
|
|
||||||
|
e) Declining to grant rights under trademark law for use of some
|
||||||
|
trade names, trademarks, or service marks; or
|
||||||
|
|
||||||
|
f) Requiring indemnification of licensors and authors of that
|
||||||
|
material by anyone who conveys the material (or modified versions of
|
||||||
|
it) with contractual assumptions of liability to the recipient, for
|
||||||
|
any liability that these contractual assumptions directly impose on
|
||||||
|
those licensors and authors.
|
||||||
|
|
||||||
|
All other non-permissive additional terms are considered "further
|
||||||
|
restrictions" within the meaning of section 10. If the Program as you
|
||||||
|
received it, or any part of it, contains a notice stating that it is
|
||||||
|
governed by this License along with a term that is a further
|
||||||
|
restriction, you may remove that term. If a license document contains
|
||||||
|
a further restriction but permits relicensing or conveying under this
|
||||||
|
License, you may add to a covered work material governed by the terms
|
||||||
|
of that license document, provided that the further restriction does
|
||||||
|
not survive such relicensing or conveying.
|
||||||
|
|
||||||
|
If you add terms to a covered work in accord with this section, you
|
||||||
|
must place, in the relevant source files, a statement of the
|
||||||
|
additional terms that apply to those files, or a notice indicating
|
||||||
|
where to find the applicable terms.
|
||||||
|
|
||||||
|
Additional terms, permissive or non-permissive, may be stated in the
|
||||||
|
form of a separately written license, or stated as exceptions;
|
||||||
|
the above requirements apply either way.
|
||||||
|
|
||||||
|
8. Termination.
|
||||||
|
|
||||||
|
You may not propagate or modify a covered work except as expressly
|
||||||
|
provided under this License. Any attempt otherwise to propagate or
|
||||||
|
modify it is void, and will automatically terminate your rights under
|
||||||
|
this License (including any patent licenses granted under the third
|
||||||
|
paragraph of section 11).
|
||||||
|
|
||||||
|
However, if you cease all violation of this License, then your
|
||||||
|
license from a particular copyright holder is reinstated (a)
|
||||||
|
provisionally, unless and until the copyright holder explicitly and
|
||||||
|
finally terminates your license, and (b) permanently, if the copyright
|
||||||
|
holder fails to notify you of the violation by some reasonable means
|
||||||
|
prior to 60 days after the cessation.
|
||||||
|
|
||||||
|
Moreover, your license from a particular copyright holder is
|
||||||
|
reinstated permanently if the copyright holder notifies you of the
|
||||||
|
violation by some reasonable means, this is the first time you have
|
||||||
|
received notice of violation of this License (for any work) from that
|
||||||
|
copyright holder, and you cure the violation prior to 30 days after
|
||||||
|
your receipt of the notice.
|
||||||
|
|
||||||
|
Termination of your rights under this section does not terminate the
|
||||||
|
licenses of parties who have received copies or rights from you under
|
||||||
|
this License. If your rights have been terminated and not permanently
|
||||||
|
reinstated, you do not qualify to receive new licenses for the same
|
||||||
|
material under section 10.
|
||||||
|
|
||||||
|
9. Acceptance Not Required for Having Copies.
|
||||||
|
|
||||||
|
You are not required to accept this License in order to receive or
|
||||||
|
run a copy of the Program. Ancillary propagation of a covered work
|
||||||
|
occurring solely as a consequence of using peer-to-peer transmission
|
||||||
|
to receive a copy likewise does not require acceptance. However,
|
||||||
|
nothing other than this License grants you permission to propagate or
|
||||||
|
modify any covered work. These actions infringe copyright if you do
|
||||||
|
not accept this License. Therefore, by modifying or propagating a
|
||||||
|
covered work, you indicate your acceptance of this License to do so.
|
||||||
|
|
||||||
|
10. Automatic Licensing of Downstream Recipients.
|
||||||
|
|
||||||
|
Each time you convey a covered work, the recipient automatically
|
||||||
|
receives a license from the original licensors, to run, modify and
|
||||||
|
propagate that work, subject to this License. You are not responsible
|
||||||
|
for enforcing compliance by third parties with this License.
|
||||||
|
|
||||||
|
An "entity transaction" is a transaction transferring control of an
|
||||||
|
organization, or substantially all assets of one, or subdividing an
|
||||||
|
organization, or merging organizations. If propagation of a covered
|
||||||
|
work results from an entity transaction, each party to that
|
||||||
|
transaction who receives a copy of the work also receives whatever
|
||||||
|
licenses to the work the party's predecessor in interest had or could
|
||||||
|
give under the previous paragraph, plus a right to possession of the
|
||||||
|
Corresponding Source of the work from the predecessor in interest, if
|
||||||
|
the predecessor has it or can get it with reasonable efforts.
|
||||||
|
|
||||||
|
You may not impose any further restrictions on the exercise of the
|
||||||
|
rights granted or affirmed under this License. For example, you may
|
||||||
|
not impose a license fee, royalty, or other charge for exercise of
|
||||||
|
rights granted under this License, and you may not initiate litigation
|
||||||
|
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||||||
|
any patent claim is infringed by making, using, selling, offering for
|
||||||
|
sale, or importing the Program or any portion of it.
|
||||||
|
|
||||||
|
11. Patents.
|
||||||
|
|
||||||
|
A "contributor" is a copyright holder who authorizes use under this
|
||||||
|
License of the Program or a work on which the Program is based. The
|
||||||
|
work thus licensed is called the contributor's "contributor version".
|
||||||
|
|
||||||
|
A contributor's "essential patent claims" are all patent claims
|
||||||
|
owned or controlled by the contributor, whether already acquired or
|
||||||
|
hereafter acquired, that would be infringed by some manner, permitted
|
||||||
|
by this License, of making, using, or selling its contributor version,
|
||||||
|
but do not include claims that would be infringed only as a
|
||||||
|
consequence of further modification of the contributor version. For
|
||||||
|
purposes of this definition, "control" includes the right to grant
|
||||||
|
patent sublicenses in a manner consistent with the requirements of
|
||||||
|
this License.
|
||||||
|
|
||||||
|
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||||||
|
patent license under the contributor's essential patent claims, to
|
||||||
|
make, use, sell, offer for sale, import and otherwise run, modify and
|
||||||
|
propagate the contents of its contributor version.
|
||||||
|
|
||||||
|
In the following three paragraphs, a "patent license" is any express
|
||||||
|
agreement or commitment, however denominated, not to enforce a patent
|
||||||
|
(such as an express permission to practice a patent or covenant not to
|
||||||
|
sue for patent infringement). To "grant" such a patent license to a
|
||||||
|
party means to make such an agreement or commitment not to enforce a
|
||||||
|
patent against the party.
|
||||||
|
|
||||||
|
If you convey a covered work, knowingly relying on a patent license,
|
||||||
|
and the Corresponding Source of the work is not available for anyone
|
||||||
|
to copy, free of charge and under the terms of this License, through a
|
||||||
|
publicly available network server or other readily accessible means,
|
||||||
|
then you must either (1) cause the Corresponding Source to be so
|
||||||
|
available, or (2) arrange to deprive yourself of the benefit of the
|
||||||
|
patent license for this particular work, or (3) arrange, in a manner
|
||||||
|
consistent with the requirements of this License, to extend the patent
|
||||||
|
license to downstream recipients. "Knowingly relying" means you have
|
||||||
|
actual knowledge that, but for the patent license, your conveying the
|
||||||
|
covered work in a country, or your recipient's use of the covered work
|
||||||
|
in a country, would infringe one or more identifiable patents in that
|
||||||
|
country that you have reason to believe are valid.
|
||||||
|
|
||||||
|
If, pursuant to or in connection with a single transaction or
|
||||||
|
arrangement, you convey, or propagate by procuring conveyance of, a
|
||||||
|
covered work, and grant a patent license to some of the parties
|
||||||
|
receiving the covered work authorizing them to use, propagate, modify
|
||||||
|
or convey a specific copy of the covered work, then the patent license
|
||||||
|
you grant is automatically extended to all recipients of the covered
|
||||||
|
work and works based on it.
|
||||||
|
|
||||||
|
A patent license is "discriminatory" if it does not include within
|
||||||
|
the scope of its coverage, prohibits the exercise of, or is
|
||||||
|
conditioned on the non-exercise of one or more of the rights that are
|
||||||
|
specifically granted under this License. You may not convey a covered
|
||||||
|
work if you are a party to an arrangement with a third party that is
|
||||||
|
in the business of distributing software, under which you make payment
|
||||||
|
to the third party based on the extent of your activity of conveying
|
||||||
|
the work, and under which the third party grants, to any of the
|
||||||
|
parties who would receive the covered work from you, a discriminatory
|
||||||
|
patent license (a) in connection with copies of the covered work
|
||||||
|
conveyed by you (or copies made from those copies), or (b) primarily
|
||||||
|
for and in connection with specific products or compilations that
|
||||||
|
contain the covered work, unless you entered into that arrangement,
|
||||||
|
or that patent license was granted, prior to 28 March 2007.
|
||||||
|
|
||||||
|
Nothing in this License shall be construed as excluding or limiting
|
||||||
|
any implied license or other defenses to infringement that may
|
||||||
|
otherwise be available to you under applicable patent law.
|
||||||
|
|
||||||
|
12. No Surrender of Others' Freedom.
|
||||||
|
|
||||||
|
If conditions are imposed on you (whether by court order, agreement or
|
||||||
|
otherwise) that contradict the conditions of this License, they do not
|
||||||
|
excuse you from the conditions of this License. If you cannot convey a
|
||||||
|
covered work so as to satisfy simultaneously your obligations under this
|
||||||
|
License and any other pertinent obligations, then as a consequence you may
|
||||||
|
not convey it at all. For example, if you agree to terms that obligate you
|
||||||
|
to collect a royalty for further conveying from those to whom you convey
|
||||||
|
the Program, the only way you could satisfy both those terms and this
|
||||||
|
License would be to refrain entirely from conveying the Program.
|
||||||
|
|
||||||
|
13. Use with the GNU Affero General Public License.
|
||||||
|
|
||||||
|
Notwithstanding any other provision of this License, you have
|
||||||
|
permission to link or combine any covered work with a work licensed
|
||||||
|
under version 3 of the GNU Affero General Public License into a single
|
||||||
|
combined work, and to convey the resulting work. The terms of this
|
||||||
|
License will continue to apply to the part which is the covered work,
|
||||||
|
but the special requirements of the GNU Affero General Public License,
|
||||||
|
section 13, concerning interaction through a network will apply to the
|
||||||
|
combination as such.
|
||||||
|
|
||||||
|
14. Revised Versions of this License.
|
||||||
|
|
||||||
|
The Free Software Foundation may publish revised and/or new versions of
|
||||||
|
the GNU General Public License from time to time. Such new versions will
|
||||||
|
be similar in spirit to the present version, but may differ in detail to
|
||||||
|
address new problems or concerns.
|
||||||
|
|
||||||
|
Each version is given a distinguishing version number. If the
|
||||||
|
Program specifies that a certain numbered version of the GNU General
|
||||||
|
Public License "or any later version" applies to it, you have the
|
||||||
|
option of following the terms and conditions either of that numbered
|
||||||
|
version or of any later version published by the Free Software
|
||||||
|
Foundation. If the Program does not specify a version number of the
|
||||||
|
GNU General Public License, you may choose any version ever published
|
||||||
|
by the Free Software Foundation.
|
||||||
|
|
||||||
|
If the Program specifies that a proxy can decide which future
|
||||||
|
versions of the GNU General Public License can be used, that proxy's
|
||||||
|
public statement of acceptance of a version permanently authorizes you
|
||||||
|
to choose that version for the Program.
|
||||||
|
|
||||||
|
Later license versions may give you additional or different
|
||||||
|
permissions. However, no additional obligations are imposed on any
|
||||||
|
author or copyright holder as a result of your choosing to follow a
|
||||||
|
later version.
|
||||||
|
|
||||||
|
15. Disclaimer of Warranty.
|
||||||
|
|
||||||
|
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
|
||||||
|
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
|
||||||
|
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
|
||||||
|
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
|
||||||
|
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||||
|
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
|
||||||
|
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
|
||||||
|
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
||||||
|
|
||||||
|
16. Limitation of Liability.
|
||||||
|
|
||||||
|
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
|
||||||
|
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
|
||||||
|
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
|
||||||
|
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
|
||||||
|
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
|
||||||
|
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
|
||||||
|
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
|
||||||
|
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
|
||||||
|
SUCH DAMAGES.
|
||||||
|
|
||||||
|
17. Interpretation of Sections 15 and 16.
|
||||||
|
|
||||||
|
If the disclaimer of warranty and limitation of liability provided
|
||||||
|
above cannot be given local legal effect according to their terms,
|
||||||
|
reviewing courts shall apply local law that most closely approximates
|
||||||
|
an absolute waiver of all civil liability in connection with the
|
||||||
|
Program, unless a warranty or assumption of liability accompanies a
|
||||||
|
copy of the Program in return for a fee.
|
||||||
|
|
||||||
|
END OF TERMS AND CONDITIONS
|
||||||
|
|
||||||
|
How to Apply These Terms to Your New Programs
|
||||||
|
|
||||||
|
If you develop a new program, and you want it to be of the greatest
|
||||||
|
possible use to the public, the best way to achieve this is to make it
|
||||||
|
free software which everyone can redistribute and change under these terms.
|
||||||
|
|
||||||
|
To do so, attach the following notices to the program. It is safest
|
||||||
|
to attach them to the start of each source file to most effectively
|
||||||
|
state the exclusion of warranty; and each file should have at least
|
||||||
|
the "copyright" line and a pointer to where the full notice is found.
|
||||||
|
|
||||||
|
<one line to give the program's name and a brief idea of what it does.>
|
||||||
|
Copyright (C) <year> <name of author>
|
||||||
|
|
||||||
|
This program is free software: you can redistribute it and/or modify
|
||||||
|
it under the terms of the GNU General Public License as published by
|
||||||
|
the Free Software Foundation, either version 3 of the License, or
|
||||||
|
(at your option) any later version.
|
||||||
|
|
||||||
|
This program is distributed in the hope that it will be useful,
|
||||||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||||
|
GNU General Public License for more details.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
Also add information on how to contact you by electronic and paper mail.
|
||||||
|
|
||||||
|
If the program does terminal interaction, make it output a short
|
||||||
|
notice like this when it starts in an interactive mode:
|
||||||
|
|
||||||
|
<program> Copyright (C) <year> <name of author>
|
||||||
|
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
|
||||||
|
This is free software, and you are welcome to redistribute it
|
||||||
|
under certain conditions; type `show c' for details.
|
||||||
|
|
||||||
|
The hypothetical commands `show w' and `show c' should show the appropriate
|
||||||
|
parts of the General Public License. Of course, your program's commands
|
||||||
|
might be different; for a GUI interface, you would use an "about box".
|
||||||
|
|
||||||
|
You should also get your employer (if you work as a programmer) or school,
|
||||||
|
if any, to sign a "copyright disclaimer" for the program, if necessary.
|
||||||
|
For more information on this, and how to apply and follow the GNU GPL, see
|
||||||
|
<http://www.gnu.org/licenses/>.
|
||||||
|
|
||||||
|
The GNU General Public License does not permit incorporating your program
|
||||||
|
into proprietary programs. If your program is a subroutine library, you
|
||||||
|
may consider it more useful to permit linking proprietary applications with
|
||||||
|
the library. If this is what you want to do, use the GNU Lesser General
|
||||||
|
Public License instead of this License. But first, please read
|
||||||
|
<http://www.gnu.org/philosophy/why-not-lgpl.html>.
|
||||||
```
|
```
|
||||||
|
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user