Question

i have a little problem: my decryption won t give me the same string i encoded, and i can t find the problem... looked in other posts, but nothing helpful there here are my functions:

public static function encryptData($data){
    if($key = self::getEncryptionKey()){
        $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
        $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
        return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $data, MCRYPT_MODE_ECB,$iv));
    } else {
        return false;
    }
}

public static function decryptData($data)
{
    if($key = self::getEncryptionKey()){
        $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
        $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);
        return mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, base64_decode($data), MCRYPT_MODE_ECB,$iv);
    } else {
        return false;
    }

}

问题在哪里? i 这里绝望......

Answer 1

各位需要everything,在双方完全相同。关键、模式、四和dding。

Looking at your code, you appear to be generating a new IV for decryption. Don t. Use the same IV as you used to encrypt.

你正确地明确指明了一种模式,但你采取了最可能的方式。无偿使用ECB,泄漏信息。采用CBC或CTR模式。

You don t specify a padding. Far better to specify it explicitly, use PKCS7 with Rijndael.

如果没有任何这种帮助,那么通过逐条检查你的钥匙,以确保其与加密和加密相同。

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