用PHP加密；用CryptoJS解密 [英] Encrypting with PHP; decrypting with CryptoJS

问题描述

我在使用用PHP加密的CryptoJS解密数据时遇到了一些麻烦。

I am having some trouble decrypting data using CryptoJS that was encrypted in PHP. Maybe somebody can advise me on where I am going wrong?

我正在加密如下：

1. 获取哈希密码


2. 将（0,16）的子字符串作为键


3. 加密（MCRYPT_RIJNDAEL_128）


4. 将密文编码为base64

1. Get hashed password
2. Take substring of (0,16) as the key
3. Encrypt (MCRYPT_RIJNDAEL_128)
4. Encode ciphertext as base64

解密时，我也这样做：

1. 获取哈希密码


2. 将（0,16）的子字符串作为键


3. Base64解码密文


4. 解密

1. Get hashed password
2. Take substring of (0,16) as the key
3. Base64 decode the ciphertext
4. Decrypt

PHP：

public function encrypt($input, $key) {
    $size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_ECB);
    $input = $this->_pkcs5_pad($input, $size);
    $td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
    $iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td), MCRYPT_RAND);
    mcrypt_generic_init($td, $key, $iv);
    $data = mcrypt_generic($td, $input);
    mcrypt_generic_deinit($td);
    mcrypt_module_close($td);
    $data = base64_encode($data);
    return $data;
}

JavaScript：

JavaScript:

function decrypt(ciphertext, hashedPsw) {
        var key =  hashedPsw.substring(0, 16);

        var key = CryptoJS.enc.Hex.parse(key);

        var options = { mode: CryptoJS.mode.ECB, padding: CryptoJS.pad.Pkcs7, keySize:128 / 32 };

        ciphertext = CryptoJS.enc.Base64.parse(ciphertext);
        var decrypted = CryptoJS.AES.decrypt(ciphertext, key);
        return decrypted;
    }

推荐答案

我刚刚找到了答案<上一个线程中的href = https://stackoverflow.com/questions/24337317/encrypt-with-php-decrypt-with-javascript-cryptojs> ：证明问题出在关键编码上。

I just discovered the answer in a previous thread: Turns out that the problem was the key encoding.

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