這個(gè)方法可以將用戶提供的字符變成亂碼，然后存儲(chǔ)起來，甚至可以存儲(chǔ)在cookies中。
HashPasswordForStoringInConfigFile方法使用起來很簡(jiǎn)單，它支持"SHA1"和"MD5"加密算法。
下面的代碼簡(jiǎn)單的演示了關(guān)于其用法：

復(fù)制代碼代碼如下:

 
<%@ Page language="c#" %> 
<%@ Import Namespace="System.Web.Security" %> 
<html> 
<head> 
<script language="C#" runat="server"> 
public void encryptString(Object sender, EventArgs e) 
{ 
SHA1.Text = FormsAuthentication.HashPasswordForStoringInConfigFile(txtPassword.Text,"SHA1"); 
MD5.Text =FormsAuthentication.HashPasswordForStoringInConfigFile(txtPassword.Text, "MD5") ; 
} 
</script> 
</head> 
<body> 
<form runat="server" ID="Form1"> 
<p> 
<b>Original Clear Text Password: </b> 
<br/> 
<asp:Textbox id="txtPassword" runat="server" /> 
<asp:Button runat="server" text="Encrypt String" onClick="encryptString" ID="Button1" /> 
</p> 
<p> 
<b>Encrypted Password In SHA1: </b> 
<asp:label id="SHA1" runat="server" /> 
</p> 
<p> 
<b>Encrypted Password In MD5: </b> 
<asp:label id="MD5" runat="server" /> 
</p> 
</form> 
</body> 
</html> 

正如你所看到的這樣簡(jiǎn)單易用。我們可以把這段加密程序封裝在一個(gè)函數(shù)里便于重復(fù)的使用。代碼如下：

復(fù)制代碼代碼如下:

 
public string EncryptPassword(string PasswordString,string PasswordFormat ) 
{ 
if (PasswordFormat="SHA1") 
{ 
EncryptPassword=FormsAuthortication.HashPasswordForStoringInConfigFile(PasswordString ,"SHA1"); 
} 
elseif (PasswordFormat="MD5") 
{ 
EncryptPassword=FormsAuthortication.HashPasswordForStoringInConfigFile(PasswordString ,"MD5"); 
} 
else 
{ 
EncryptPassword=""; 
} 
} 

MD5的一些應(yīng)用

復(fù)制代碼代碼如下:

 
string payKey = getPayKey(WebDataParse.TryIntParse(partner, 0)); 
string signMsgVal = partner + out_orderId + userId + serverId + total_fee + notify_url + payKey; 
signMsgVal = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(signMsgVal, "md5").ToUpper(); 
if (signMsgVal == signMsg) 
return true; 

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