unity C# 中关于字符串加密

最新推荐文章于 2024-05-10 09:41:49 发布

哇还能不能起名了

最新推荐文章于 2024-05-10 09:41:49 发布

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文章标签： c# 开发语言 unity 游戏引擎同态加密

本文链接：https://blog.youkuaiyun.com/qq_33503206/article/details/129662563

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这段代码提供了使用AES算法进行字符串加密和解密的C#实现。它检查了输入参数的有效性，然后利用ASCII编码的密钥和初始化向量进行操作，并将结果转换为Base64字符串。

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 /// <summary>
    /// 加密
    /// </summary>
    /// <param name="plainText">需要加密的字符串</param>
    /// <returns></returns>
    public static string EncryptString(string plainText)
    {
        if (plainText == null || plainText.Length <= 0)
            throw new ArgumentNullException("plainText");
        if (Key == null || Key.Length <= 0)
            throw new ArgumentNullException("Key");
        if (IV == null || IV.Length <= 0)
            throw new ArgumentNullException("IV");

        byte[] encrypted;
        using (Aes aesAlg = Aes.Create())
        {
            aesAlg.Key = Encoding.ASCII.GetBytes(Key);
            aesAlg.IV = Encoding.ASCII.GetBytes(IV);
            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, Encoding.UTF8))
                    {
                        swEncrypt.Write(plainText);
                    }
                    encrypted = msEncrypt.ToArray();
                }
            }
        }
        return Convert.ToBase64String(encrypted);
    }
    /// <summary>
    /// 解密
    /// </summary>
    /// <param name="cipherStr">需要解密的字符串</param>
    /// <returns></returns>
    public static string DecryptString(string cipherStr)
    {
        var cipherText = Convert.FromBase64String(cipherStr);
        if (cipherText == null || cipherText.Length <= 0)
            throw new ArgumentNullException("cipherText");
        if (Key == null || Key.Length <= 0)
            throw new ArgumentNullException("Key");
        if (IV == null || IV.Length <= 0)
            throw new ArgumentNullException("IV");

        string plaintext = null;
        using (Aes aesAlg = Aes.Create())
        {
            aesAlg.Key = Encoding.ASCII.GetBytes(Key);
            aesAlg.IV = Encoding.ASCII.GetBytes(IV);
            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, Encoding.UTF8))
                    {
                        plaintext = srDecrypt.ReadToEnd();
                    }
                }
            }
        }
        return plaintext;
    }