GCrypt/GhettoCrypt/src/GhettoCryptWrapper.cpp

#include "GhettoCryptWrapper.h"
#include "Cipher.h"
#include "Util.h"

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;
  }
}