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  • Des加密方法

    //默认密钥向量
    private static byte[] Keys = { 0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF };
    private static string EncryptKey = "super";

    /**/
    /// <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)
    {
    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)
    {
    if (decryptString == "")
    return "";
    try
    {
    byte[] rgbKey = System.Text.Encoding.UTF8.GetBytes(EncryptKey);
    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 "";
    }
    }

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  • 原文地址:https://www.cnblogs.com/huangf714/p/5876291.html
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