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  • 字符串加解密

            #region<字符串加解密>
            /// <summary>
            /// 加密原函数
            /// </summary>
            /// <param name="pToEncrypt"></param>
            /// <param name="sKey"></param>
            /// <returns></returns>
            public static string DesEncrypt(string pToEncrypt)
            {
                try
                {
                    string sKey = "test123ok";
                    DESCryptoServiceProvider des = new DESCryptoServiceProvider();
                    byte[] inputByteArray = Encoding.Default.GetBytes(pToEncrypt);
                    des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
                    des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
                    MemoryStream ms = new MemoryStream();
                    CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    StringBuilder ret = new StringBuilder();
                    foreach (byte b in ms.ToArray())
                    {
                        ret.AppendFormat("{0:X2}", b);
                    }
                    return ret.ToString();
                }
                catch { return ""; }
            }
    
            /// <summary>
            /// 解密原函数
            /// </summary>
            /// <param name="pToDecrypt"></param>
            /// <param name="sKey"></param>
            /// <returns></returns>
            public static string DesDecrypt(string pToDecrypt)
            {
                try
                {
                    string sKey = "test123ok";
                    DESCryptoServiceProvider des = new DESCryptoServiceProvider();
                    byte[] inputByteArray = new byte[pToDecrypt.Length / 2];
                    for (int x = 0; x < pToDecrypt.Length / 2; x++)
                    {
                        int i = (Convert.ToInt32(pToDecrypt.Substring(x * 2, 2), 16));
                        inputByteArray[x] = (byte)i;
                    }
                    des.Key = ASCIIEncoding.ASCII.GetBytes(sKey);
                    des.IV = ASCIIEncoding.ASCII.GetBytes(sKey);
                    MemoryStream ms = new MemoryStream();
                    CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
                    cs.Write(inputByteArray, 0, inputByteArray.Length);
                    cs.FlushFinalBlock();
                    StringBuilder ret = new StringBuilder();
                    return System.Text.Encoding.Default.GetString(ms.ToArray());
                }
                catch
                { return ""; }
            }
            #endregion<结束字符串加解密>
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  • 原文地址:https://www.cnblogs.com/lusunqing/p/3150759.html
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