I try to decode a string encode in php using : mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_ECB)
And it seems to didn't work in C++ with :
CkCrypt2 Crypt; Crypt.put_CryptAlgorithm("aes"); Crypt.put_CipherMode("ebc"); Crypt.put_PaddingScheme(3); Crypt.put_KeyLength(256); Crypt.put_EncodingMode("base64"); Crypt.SetEncodedKey(AES_KEY,"ascii");
AES is not exactly synonymous with “Rijndael”. AES is a (restricted) variant of Rijndael.
AES has a fixed block size of 128 bits and a key size of 128, 192, or 256 bits, whereas Rijndael is specified with block and key sizes in any multiple of 32 bits, both with a minimum of 128 and a maximum of 256 bits.
PHP provides a general implementation Rijndael algorithm. The PHP mcrypt API is unintentionally misleading because most users would think that specifying MCRYPT_RIJNDAEL_256 means that you’ll get 256-bit encryption. This is NOT the case. The MCRYPT_RIJNDAEL_256 is actually setting the block size of the algorithm (not the strength).