C# 下简单的进行加密解密问题

今天用到了C# 下的文本加密解密问题，从网上找了很多素材都不合适 MD5原来是不可逆的加密，所以用了一个相对来说比较简单的加密方法，既可以加密也可以解密 记录一下以后方便大家使用

 

using System.Security.Cryptography; //加密 public static String JiaMi(String str) { String encryptKey = "Oyea"; DESCryptoServiceProvider descsp = new DESCryptoServiceProvider(); byte[] key = Encoding.Unicode.GetBytes(encryptKey); byte[] data = Encoding.Unicode.GetBytes(str); System.IO.MemoryStream MStream = new System.IO.MemoryStream(); CryptoStream CStream = new CryptoStream(MStream, descsp.CreateEncryptor(key, key), CryptoStreamMode.Write); CStream.Write(data, 0, data.Length); CStream.FlushFinalBlock(); return Convert.ToBase64String(MStream.ToArray()); } //解密 public static String JieMi(String str) { String encryptKey = "Oyea"; DESCryptoServiceProvider descsp = new DESCryptoServiceProvider(); byte[] key = Encoding.Unicode.GetBytes(encryptKey); byte[] data = Convert.FromBase64String(str); System.IO.MemoryStream MStream = new System.IO.MemoryStream(); CryptoStream CStream = new CryptoStream(MStream, descsp.CreateDecryptor(key,key), CryptoStreamMode.Write); CStream.Write(data, 0, data.Length); CStream.FlushFinalBlock(); return Encoding.Unicode.GetString(MStream.ToArray()); }