inline void DecContent(std::string& dec, const std::string& data, const CipherParam& param, const std::string& key, const std::string& salt)
{
const size_t blockSize = 4096;
dec.reserve(data.size());
const size_t n = (data.size() + blockSize - 1) / blockSize;
for (size_t i = 0; i < n; i++) {
const size_t len = (i < n - 1) ? blockSize : (data.size() % blockSize);
std::string blockKey(4, 0);
cybozu::Set32bitAsLE(&blockKey[0], static_cast<uint32_t>(i));
const std::string iv = generateKey(param, salt, blockKey);
dec.append(cipher(param.cipherName, data.c_str() + i * blockSize, len, key, iv, cybozu::crypto::Cipher::Decoding));
}
}
std::string decContent(const std::string& data, const std::string& key, const std::string& salt)
{
std::string dec;
dec.reserve(data.size());
const size_t n = (data.size() + 4095) / 4096;
for (size_t i = 0; i < n; i++) {
const size_t len = (i < n - 1) ? 4096 : (data.size() % 4096);
std::string blockKey(4, 0);
cybozu::Set32bitAsLE(&blockKey[0], i);
const std::string iv = generateKey(salt, blockKey);
dec.append(cipher(data.c_str() + i * 4096, len, key, iv));
}
return dec;
}
inline void EncContent(std::string& encryptedPackage, const std::string& org, const CipherParam& param, const std::string& key, const std::string& salt)
{
uint64_t orgSize = org.size();
const size_t blockSize = 4096;
std::string data = org;
data.resize(RoundUp(data.size(), size_t(16)));
#ifdef SAME_KEY
data[data.size() - 2] = 0x4b; // QQQ remove this
data[data.size() - 1] = 0x6a;
#endif
encryptedPackage.reserve(data.size() + 8);
encryptedPackage.resize(8);
cybozu::Set64bitAsLE(&encryptedPackage[0], orgSize);
const size_t n = (data.size() + blockSize - 1) / blockSize;
for (size_t i = 0; i < n; i++) {
const size_t len = (i < n - 1) ? blockSize : (data.size() % blockSize);
std::string blockKey(4, 0);
cybozu::Set32bitAsLE(&blockKey[0], static_cast<uint32_t>(i));
const std::string iv = generateKey(param, salt, blockKey);
encryptedPackage.append(cipher(param.cipherName, data.c_str() + i * blockSize, len, key, iv, cybozu::crypto::Cipher::Encoding));
}
}
void Key<keyHandlerClass>::keyPressed(void) {
blockKey();
(pKeyHandlerInstance->*pKeyHandlerFunction)();
}
