Exemplo n.º 1
0
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="Text">要加密的文本</param>
        /// <param name="sKey">秘钥</param>
        /// <returns></returns>
        public static string Encrypt(string Text, string sKey)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();

            byte[] inputByteArray;
            inputByteArray = Encoding.Default.GetBytes(Text);
            des.Key        = ASCIIEncoding.ASCII.GetBytes(Md5.Md5Hash(sKey).Substring(0, 8));
            des.IV         = ASCIIEncoding.ASCII.GetBytes(Md5.Md5Hash(sKey).Substring(0, 8));
            System.IO.MemoryStream ms = new System.IO.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());
        }
Exemplo n.º 2
0
        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="Text"></param>
        /// <param name="sKey"></param>
        /// <returns></returns>
        public static string Decrypt(string Text, string sKey)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            int len;

            len = Text.Length / 2;
            byte[] inputByteArray = new byte[len];
            int    x, i;

            for (x = 0; x < len; x++)
            {
                i = Convert.ToInt32(Text.Substring(x * 2, 2), 16);
                inputByteArray[x] = (byte)i;
            }
            des.Key = ASCIIEncoding.ASCII.GetBytes(Md5.Md5Hash(sKey).Substring(0, 8));
            des.IV  = ASCIIEncoding.ASCII.GetBytes(Md5.Md5Hash(sKey).Substring(0, 8));
            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            CryptoStream           cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);

            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            return(Encoding.Default.GetString(ms.ToArray()));
        }