无法在C#bouncycastle和PHP openssl之间交换AES-256-CBC/PKCS7

因此,我用C#和PHP编写了以下代码,到目前为止,这两种语言的结果并不一致。对于C#,我使用bouncy castle API,对于PHP,我使用openSSL。为了确保这一点,我还使用Microsoft Crypto Library在C#中加密了相同的内容,我得到了相同的密码文本,但在与PHP交换时没有。

C#

    public const string AES_ALGORITHM = "AES/CBC/PKCS7";
    public const string CRYPTO_ALGORITHM = "AES";
    public AESController(string key) {
        encryptionKey = Convert.FromBase64String(key);
    }
    public string encrypt(string plainText, byte[] iv) {
        string cipherText = "";
        //setting up AES Key
        KeyParameter aesKeyParam = ParameterUtilities.CreateKeyParameter(CRYPTO_ALGORITHM, encryptionKey);

        // Setting up the Initialization Vector. IV is used for encrypting the first block of input message
        ParametersWithIV aesIVKeyParam = new ParametersWithIV(aesKeyParam, iv);

        // Create the cipher object for AES algorithm using GCM mode and NO padding
        IBufferedCipher cipher = CipherUtilities.GetCipher(AES_ALGORITHM);
        cipher.Init(true, aesIVKeyParam);

        byte[] output = cipher.DoFinal(Encoding.UTF8.GetBytes(plainText));

        cipherText = Convert.ToBase64String(output);
        return cipherText;
    }

    public string decrypt(string cipherText, byte[] iv) {
        string plainText = "";
        //setting up AES Key
        KeyParameter aesKeyParam = ParameterUtilities.CreateKeyParameter(CRYPTO_ALGORITHM, encryptionKey);

        // Setting up the Initialization Vector. IV is used for encrypting the first block of input message
        ParametersWithIV aesIVKeyParam = new ParametersWithIV(aesKeyParam, iv);

        // Create the cipher object for AES algorithm using GCM mode and NO padding
        IBufferedCipher cipher = CipherUtilities.GetCipher(AES_ALGORITHM);
        cipher.Init(false, aesIVKeyParam);


        byte[] output = cipher.DoFinal(Convert.FromBase64String(cipherText));

        plainText = Encoding.UTF8.GetString(output);
        return plainText;
    }

     static void Main(string[] args) {
        AESController aes = new AESController("OXzN4fxHHgcKtAt/SJ4UWtNiQlzno7II1gIBs24CWpY=");
        byte[] iv = Base64.Decode("fdL8sKmhC8YIrYHMzoJJvQ==");
        string encryptedText = "TESTING123";

        string cipherText = aes.encrypt(encryptedText, iv);
        Console.Out.WriteLine("IV: " + Encoding.UTF8.GetString(Base64.Encode(iv)));
        Console.Out.WriteLine("Plain Text:"+aes.decrypt(cipherText, iv));
        Console.Out.WriteLine("Cipher Text:" + cipherText);

        Console.In.ReadLine();
    }

然后是PHP:

    $key = "OXzN4fxHHgcKtAt/SJ4UWtNiQlzno7II1gIBs24CWpY=";
    $iv = base64_decode("fdL8sKmhC8YIrYHMzoJJvQ==");
    //$iv = openssl_random_pseudo_bytes(16);
    //$cipherText = "YMdJ0mdWZ+p50krLzhyI0Q==";
    $plainText = "TESTING123";
    $decrypted = openssl_encrypt($plainText, "aes-256-cbc", $key, 0, $iv);

    var_dump($decrypted);

因此,来自C#bouncycastle的密码文本是:

EnOtpv4fOGiAKMzXXJMYBA==

来自PHP的密码文本是:

Cs+f7a/DBEGma7iQ/PQVLw==

如果我将c#密码文本转换为PHP,解密结果是:bool(False) (加密失败)

最后,如果在PHP中,我将填充更改为OPENSSL_ZERO_padding,并从C#解密密码文本,结果如下:

_XGmNSlZx

我可以收集到的是,密钥和IV在两者上都是相同的(都是BASE64字符串),加密的结果具有相同的长度(这解释了密码文本末尾的两个==的原因)。我是否遗漏了什么,或者我需要为openssl库做一些特殊的事情?谢谢。