复制代码 代码如下:

protected void Page_Load(object sender, EventArgs e)

{

//加密算法

string username = "我是陈建勇";

//MD5加密 - 得到32位加密数据,数据不好解密。过于复杂。

username =FormsAuthentication.HashPasswordForStoringInConfigFile(username, "MD5");

//SHA1加密 - 得到40位加密数据,数据不好解密。过于复杂。

string username1 = FormsAuthentication.HashPasswordForStoringInConfigFile(username, "SHA1");

Response.Write(username+"<br>");

Response.Write(username1+"<br>");

//解密算法

//普通加密

string s = "我是陈建勇";

string encodestr = "";

byte[] bytes = System.Text.Encoding.GetEncoding(0).GetBytes(s);

try

{

encodestr = Convert.ToBase64String(bytes);

Response.Write("aa");

}

catch

{

encodestr = s;

Response.Write("bb");

}

Response.Write(encodestr+"<br>");

//普通解密

string decodestr = "";

byte[] bytes1 = Convert.FromBase64String(encodestr);

try

{

decodestr = System.Text.Encoding.GetEncoding(0).GetString(bytes1);

Response.Write("cc");

}

catch

{

Response.Write("dd");

decodestr = encodestr;

}

Response.Write(decodestr+"<br>");

//普通加密

string myname = "陈建勇";

myname = System.Web.HttpUtility.UrlEncode(myname, System.Text.Encoding.UTF8);

Response.Write(myname+"<br>");

//普通解密

myname = System.Web.HttpUtility.UrlDecode(myname, System.Text.Encoding.UTF8);

Response.Write(myname);

}