C# DES加密解密
using System; using System.IO; using System.Collections.Generic; using System.Linq; using System.Text; using System.Security.Cryptography; namespace Des { class Program { public static string Encode(string data, string Key) //加密 { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(Key); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(Key); DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); int i = cryptoProvider.KeySize; MemoryStream ms = new MemoryStream(); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write); StreamWriter sw = new StreamWriter(cst); sw.Write(data); sw.Flush(); cst.FlushFinalBlock(); sw.Flush(); return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length); } public static string Decode(string data, string Key) //解密 { byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(Key); byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(Key); byte[] byEnc; try { byEnc = Convert.FromBase64String(data); } catch { return null; } DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider(); MemoryStream ms = new MemoryStream(byEnc); CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read); StreamReader sr = new StreamReader(cst); return sr.ReadToEnd(); } static void Main(string[] args) { string ecode; string dcode; ecode = Encode("Hello word,this is a testing", "qwertyui"); Console.Write(ecode); Console.Write("\r\n"); dcode = Decode(ecode, "qwertyui"); Console.Write(dcode); Console.Write("\r\n"); } } }
输出:
E:\C#\Des\Des\bin\Debug>Des.exe
Zz8EouQdHsvcw4oB4IdNV5QFIyyLbYd2PCX1k4kvod0=
Hello word,this is a testing