C# 下简单的进行加密解密问题

来源：互联网发布：linux下如何安装tomcat 编辑：程序博客网时间：2024/06/09 15:37

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()); 
}