PHP版本： 5.6.39

Node.js版本： 10.9.0

目标：使用PHP加密并使用Node.js解密

Stuck Point：我目前假设PHP和Node.js绑定到OpenSSL都使用了PKCS7填充。PHP和Node.js是否使用与OpenSSL不兼容的绑定？

示例PHP加密/解密代码：

class SymmetricEncryption {

   public static function simpleEncrypt($key, $plaintext) {
      $iv = openssl_random_pseudo_bytes(16);
      $ciphertext = openssl_encrypt($plaintext, 'aes-256-cbc', $key, OPENSSL_RAW_DATA, $iv)

      return base64_encode($iv) . "." . base64_encode($ciphertext);
   }

   public static function simpleDecrypt($key, $token) {
       list($iv, $ciphertext) = explode(".", $token);

        return openssl_decrypt(
           base64_decode($ciphertext),
           "aes-256-cbc",
           $key,
           OPENSSL_RAW_DATA,
           base64_decode($iv)
        );
   }
}

示例Node.js加密/解密代码：

class SymmetricEncryption {

    static simpleEncrypt(key: Buffer, plaintext: string): string {
        const iv = randomBytes(16)
        const cipher = createCipheriv('aes-256-cbc', key, iv)
        const encrypted = cipher.update(plaintext)
        const token = Buffer.concat([encrypted, cipher.final()])

        return iv.toString('base64') + "." + token.toString('base64')
    }

    static simpleDecrypt(key: Buffer, token: string): string {
        const [iv, ciphertext] = token.split(".").map(piece => Buffer.from(piece, 'base64'))
        const decipher = createDecipheriv('aes-256-cbc', key, iv)
        const output = decipher.update(ciphertext)
        return Buffer.concat([output, decipher.final()]).toString('utf8')
    }
}

我已经成功地独立测试了每个实现，但是当在PHP中加密并在node.js中解密时，我收到以下错误：

Error: error:06065064:digital envelope routines:EVP_DecryptFinal_ex:bad decrypt

堆栈跟踪指向我的那一行，这是decipher.final()在simpleDecrypt方法。

我正在使用以下（失败）单元测试来验证我的实现

it('should be able to decrypt values from php', () => {
    const testAesKey = Buffer.from('9E9CEB8356ED0212C37B4D8CEA7C04B6239175420203AF7A345527AF9ADB0EB8', 'hex')
    const phpToken = 'oMhL/oIPAGQdMvphMyWdJw==.bELyRSIwy+nQGIyLj+aN8A=='
    const decrypted = SymmetricEncryption.simpleDecrypt(testAesKey, phpToken)
    expect(decrypted).toBe('hello world')
})

在phpToken我使用此变量是使用下面的代码创建的：

$testAesKey = "9E9CEB8356ED0212C37B4D8CEA7C04B6239175420203AF7A345527AF9ADB0EB8";

echo SymmetricEncryption::simpleEncrypt($testAesKey, "hello world");