C# 加解密错误

我有一个相当简单的加密和解密代码。但是，当我加密然后解密时，输出不是我最初输入的

这是加密：

static byte[] Encrypt(SymmetricAlgorithm aesAlg, string plainText)
    {
        ICryptoTransform encryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

        using (MemoryStream msEncrypt = new MemoryStream())
        {
            using (CryptoStream csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
            {
                using (StreamWriter swEncrypt = new StreamWriter(csEncrypt))
                {
                    swEncrypt.Write(plainText);
                }
                return msEncrypt.ToArray();
            }
        }
    }

解密：

static string Decrypt(SymmetricAlgorithm aesAlg, byte[] cipherText)
    {
        ICryptoTransform decryptor = aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

        using (MemoryStream msDecrypt = new MemoryStream(cipherText))
        {
            using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
            {
                using (StreamReader srDecrypt = new StreamReader(csDecrypt))
                {
                    return srDecrypt.ReadToEnd();
                }
            }
        }
    }

主要内容：

输出应为：

Original: My secret data!
RoundTrip: My secret data!

然而，结果是：

Original: My secret data!
RoundTrip: ">�����6dB&JD䮦�L�ܹ�SKo\v*.�"

或者像那样有趣的事情

---

我在网上找不到任何有用的东西。非常感谢您的任何建议。

问题在于，在您的

解密

方法中，您创建了另一个加密程序，而不是

解密程序

如果你换线

aesAlg.CreateEncryptor(aesAlg.Key, aesAlg.IV);

到

然后您将获得解密文本。

解密代码

static string Decrypt(SymmetricAlgorithm aesAlg, byte[] cipherText)
{
    ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

    using (MemoryStream msDecrypt = new MemoryStream(cipherText))
    {
        using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
        {
            using (StreamReader srDecrypt = new StreamReader(csDecrypt))
            {
                return srDecrypt.ReadToEnd();
            }
        }
    }
}

---

使用aesAlg.CreateDecryptor（aesAlg.Key，aesAlg.IV）；对于decryptionSo，这是一个输入错误的问题，因此应该关闭。可能与So重复，除了代码转储之外，你在说什么？

aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

static string Decrypt(SymmetricAlgorithm aesAlg, byte[] cipherText)
{
    ICryptoTransform decryptor = aesAlg.CreateDecryptor(aesAlg.Key, aesAlg.IV);

    using (MemoryStream msDecrypt = new MemoryStream(cipherText))
    {
        using (CryptoStream csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
        {
            using (StreamReader srDecrypt = new StreamReader(csDecrypt))
            {
                return srDecrypt.ReadToEnd();
            }
        }
    }
}