const char* encrypt(const char* unhexed, const char* key) {
int size = strlen(unhexed);
int spaces = 0;
if (size % 16) {
spaces = 16 - (size % 16);
}
size += spaces;
char* buffer = new char[size+1];
// TODO: memory check
// Add spaces to the end to make size divisible by block size
for (; spaces > 0; spaces--) {
buffer[size-spaces] = ' ';
}
// Create reader
CRijndael reader;
reader.MakeKey(key, CRijndael::sm_chain0, 16, 16);
reader.Encrypt(unhexed, buffer, size, CRijndael::CFB);
// Convert to hex
char* result = new char[size*2+1];
CharStr2HexStr((unsigned char*)buffer, result, size);
delete [] buffer;
return result;
}
bool CStdCrypt::getKey(BYTE *pKey, size_t cbKeyLen)
{
if (!m_valid || cbKeyLen < sizeof(ExternalKey))
return false;
ExternalKey tmp = { 0 };
memcpy(&tmp.m_key, m_key, KEY_LENGTH);
tmp.m_crc32 = crc32(0xAbbaDead, (LPCBYTE)m_password.GetString(), m_password.GetLength());
getRandomBytes(tmp.slack, sizeof(tmp.slack));
BYTE tmpHash[32];
slow_hash(m_password, m_password.GetLength(), tmpHash);
CRijndael tmpAes;
tmpAes.MakeKey(tmpHash, tmpAes.sm_chain0, KEY_LENGTH, BLOCK_SIZE);
tmpAes.Encrypt(&tmp, pKey, sizeof(tmp));
return true;
}
