New directory structure for libghettocrypt
This commit is contained in:
8
GhettoCrypt/include/Block.h
Normal file
8
GhettoCrypt/include/Block.h
Normal file
@@ -0,0 +1,8 @@
|
||||
#pragma once
|
||||
#include "SecureBitset.h"
|
||||
#include "Config.h"
|
||||
|
||||
namespace GhettoCipher
|
||||
{
|
||||
typedef SecureBitset<BLOCK_SIZE> Block;
|
||||
}
|
40
GhettoCrypt/include/Cipher.h
Normal file
40
GhettoCrypt/include/Cipher.h
Normal file
@@ -0,0 +1,40 @@
|
||||
#pragma once
|
||||
#include "Feistel.h"
|
||||
#include "Flexblock.h"
|
||||
|
||||
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;
|
||||
};
|
||||
}
|
||||
|
11
GhettoCrypt/include/Config.h
Normal file
11
GhettoCrypt/include/Config.h
Normal file
@@ -0,0 +1,11 @@
|
||||
#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;
|
||||
}
|
||||
|
60
GhettoCrypt/include/Feistel.h
Normal file
60
GhettoCrypt/include/Feistel.h
Normal file
@@ -0,0 +1,60 @@
|
||||
#pragma once
|
||||
#include "Keyset.h"
|
||||
#include "Block.h"
|
||||
#include "Halfblock.h"
|
||||
|
||||
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;
|
||||
};
|
||||
}
|
8
GhettoCrypt/include/Flexblock.h
Normal file
8
GhettoCrypt/include/Flexblock.h
Normal file
@@ -0,0 +1,8 @@
|
||||
#pragma once
|
||||
#include <string>
|
||||
|
||||
namespace GhettoCipher
|
||||
{
|
||||
//! A "bitset" of variable length
|
||||
typedef std::string Flexblock;
|
||||
}
|
33
GhettoCrypt/include/GhettoCryptWrapper.h
Normal file
33
GhettoCrypt/include/GhettoCryptWrapper.h
Normal file
@@ -0,0 +1,33 @@
|
||||
#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();
|
||||
};
|
||||
}
|
10
GhettoCrypt/include/Halfblock.h
Normal file
10
GhettoCrypt/include/Halfblock.h
Normal file
@@ -0,0 +1,10 @@
|
||||
#pragma once
|
||||
#include "SecureBitset.h"
|
||||
#include <cstdint>
|
||||
#include "Config.h"
|
||||
|
||||
namespace GhettoCipher
|
||||
{
|
||||
constexpr std::size_t HALFBLOCK_SIZE = (BLOCK_SIZE / 2);
|
||||
typedef SecureBitset<HALFBLOCK_SIZE> Halfblock;
|
||||
}
|
19
GhettoCrypt/include/InitializationVector.h
Normal file
19
GhettoCrypt/include/InitializationVector.h
Normal file
@@ -0,0 +1,19 @@
|
||||
#pragma once
|
||||
#include "Config.h"
|
||||
#include "Block.h"
|
||||
|
||||
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;
|
||||
};
|
||||
}
|
9
GhettoCrypt/include/Keyset.h
Normal file
9
GhettoCrypt/include/Keyset.h
Normal file
@@ -0,0 +1,9 @@
|
||||
#pragma once
|
||||
#include <array>
|
||||
#include "Block.h"
|
||||
#include "Config.h"
|
||||
|
||||
namespace GhettoCipher
|
||||
{
|
||||
typedef std::array<Block, N_ROUNDS> Keyset;
|
||||
}
|
324
GhettoCrypt/include/SecureBitset.h
Normal file
324
GhettoCrypt/include/SecureBitset.h
Normal file
@@ -0,0 +1,324 @@
|
||||
#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();
|
||||
}
|
||||
}
|
319
GhettoCrypt/include/Util.h
Normal file
319
GhettoCrypt/include/Util.h
Normal file
@@ -0,0 +1,319 @@
|
||||
#pragma once
|
||||
#include <bitset>
|
||||
#include <sstream>
|
||||
#include <fstream>
|
||||
#include <cstring>
|
||||
#include "SecureBitset.h"
|
||||
#include "Block.h"
|
||||
#include "Flexblock.h"
|
||||
#include "Config.h"
|
||||
#include "Cipher.h"
|
||||
#include "InitializationVector.h"
|
||||
|
||||
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.
|
||||
//! 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)
|
||||
{
|
||||
// Let's provide a nice initial value to be sure even a password of length 0 results in a proper key
|
||||
Block b = InitializationVector(StringToBitblock("3J7IipfQTDJbO8jtasz9PgWui6faPaEMOuVuAqyhB1S2CRcLw5caawewgDUEG1WN"));
|
||||
|
||||
// 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)
|
||||
{
|
||||
const Block fragment = StringToBitblock(
|
||||
PadStringToLength(in.substr(i, BLOCK_SIZE / 8), BLOCK_SIZE / 8, 0, false)
|
||||
);
|
||||
|
||||
// To provide confusion, xor the blocks together
|
||||
// To provide diffusion, hash fragment to fragment' first
|
||||
b ^= Block(Cipher(fragment).Encipher(fragment.to_string()));
|
||||
}
|
||||
|
||||
|
||||
return b;
|
||||
}
|
||||
|
||||
//! Will reduce a flexblock (they are of arbitrary length) to a single block.
|
||||
//! This single block should change completely, if a single bit in the input flexblock changes anywhere.
|
||||
inline Block ReductionFunction_Flexblock2Block(const Flexblock& in)
|
||||
{
|
||||
Block b; // No initialization vector needed here
|
||||
|
||||
// Segment the input in segments of BLOCK_SIZE, and xor them together.
|
||||
for (std::size_t i = 0; i < in.size(); i += BLOCK_SIZE)
|
||||
{
|
||||
const Block fragment = Block(PadStringToLength(in.substr(i, BLOCK_SIZE), BLOCK_SIZE, 0, false));
|
||||
|
||||
// To provide confusion, xor the blocks together
|
||||
// To provide diffusion, hash fragment to fragment' first
|
||||
b ^= Block(Cipher(fragment).Encipher(fragment.to_string()));
|
||||
}
|
||||
|
||||
return 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;
|
||||
}
|
||||
}
|
2
GhettoCrypt/include/Version.h
Normal file
2
GhettoCrypt/include/Version.h
Normal file
@@ -0,0 +1,2 @@
|
||||
#pragma once
|
||||
#define GHETTOCRYPT_VERSION 0.21
|
Reference in New Issue
Block a user