【Unity3D】存档文件加密代码

发布时间：2019-09-02 07:47:18编辑：auto阅读（1528）

    存档文件， 被修改起来现在变的很容易了， 为了解决这个问题，请用下面的代码，修改playerPrefs.cs
    1.替换
    fileReader = new StreamReader(fileName);
    serializedInput =DecryptDES(fileReader.ReadLine(), highscore.keyss);
    2.替换
    fileWriter.WriteLine( EncryptDES(serializedOutput , highscore.keyss));
    fileWriter.Close();
    3.copy
    //默认密钥向量
    private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
    public static string keyss = "1234567z";
    /// <summary>
    /// DES加密字符串
    /// </summary>
    /// <param name="encryptString">待加密的字符串</param>
    /// <param name="encryptKey">加密密钥,要求为8位</param>
    /// <returns>加密成功返回加密后的字符串，失败返回源串</returns>
    public static string EncryptDES(string encryptString, string encryptKey)
    {
    try
    {
    byte[] rgbKey = Encoding.UTF8.GetBytes(encryptKey.Substring(0, 8));
    byte[] rgbIV = Keys;
    byte[] inputByteArray = Encoding.UTF8.GetBytes(encryptString);
    DESCryptoServiceProvider dCSP = new DESCryptoServiceProvider();
    MemoryStream mStream = new MemoryStream();
    CryptoStream cStream = new CryptoStream(mStream, dCSP.CreateEncryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
    cStream.Write(inputByteArray, 0, inputByteArray.Length);
    cStream.FlushFinalBlock();
    return Convert.ToBase64String(mStream.ToArray());
    }
    catch
    {
    return encryptString;
    }
    }
    /// <summary>
    /// DES解密字符串
    /// </summary>
    /// <param name="decryptString">待解密的字符串</param>
    /// <param name="decryptKey">解密密钥,要求为8位,和加密密钥相同</param>
    /// <returns>解密成功返回解密后的字符串，失败返源串</returns>
    public static string DecryptDES(string decryptString, string decryptKey)
    {
    try
    {
    byte[] rgbKey = Encoding.UTF8.GetBytes(decryptKey);
    byte[] rgbIV = Keys;
    byte[] inputByteArray = Convert.FromBase64String(decryptString);
    DESCryptoServiceProvider DCSP = new DESCryptoServiceProvider();
    MemoryStream mStream = new MemoryStream();
    CryptoStream cStream = new CryptoStream(mStream, DCSP.CreateDecryptor(rgbKey, rgbIV), CryptoStreamMode.Write);
    cStream.Write(inputByteArray, 0, inputByteArray.Length);
    cStream.FlushFinalBlock();
    return Encoding.UTF8.GetString(mStream.ToArray());
    }
    catch
    {
    return decryptString;
    }
    }

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