C#实现3DES加密 解密.doc

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1、.NET中的3DES加密如果编码有问题，可以尝试Encoding.GetEncoding("gb2312")usingSystem.Text;usingSystem.Security.Cryptography;public static string DES3Encrypt(string strString, string strKey) {            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();

2、            MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();            DES.Key = hashMD5.ComputeHash(Encoding.Default.GetBytes(strKey));            DES.Mode = CipherMode.ECB;            ICryptoTransform DESEncrypt = DES.CreateEncryptor(); 

3、           byte[] Buffer = Encoding.Default.GetBytes(strString);            return Convert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));        }        public static string DES3Decrypt(string strString, string strKey)        {   

4、            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();            MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();            DES.Key = hashMD5.ComputeHash(Encoding.Default.GetBytes(strKey));            DES.M

5、ode = CipherMode.ECB;            ICryptoTransform DESDecrypt = DES.CreateDecryptor();            string result = "";            try            {                byte[] Buffer = Convert.FromBase64String(strString);                result = Encoding.Default.GetS

6、tring(DESDecrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));            }            catch(System.Exception e)            {                throw(new System.Exception("null", e)) ;            }            return result ;        }C#实现3DES加密解密usingSystem;us

7、ingSystem.Collections.Generic;usingSystem.Text;usingSystem.IO;usingSystem.Security.Cryptography;namespaceConsoleApplication1{classProgram{publicstaticstringEncrypt3DES(stringa_strString,stringa_strKey){TripleDESCryptoServiceProviderDES=newTripleDESCryptoServ

8、iceProvider();DES.Key=ASCIIEncoding.ASCII.GetBytes(a_strKey);DES.Mode=CipherMode.ECB;ICryptoTransformDESEncrypt=DES.CreateEncryptor();byte[]Buffer=ASCIIEncoding.ASCII.GetBytes(a_strString);retur