两种散列加密算法:MD5、SHA1

//原来写在一个webservice里所以有后面的者一串[WebMethod(Description="提供两种散列加密算法:MD5、SHA1。大小写敏感。")]
public string EncryptPassword(string PasswordString,string PasswordFormat)
{
string result="";
switch(PasswordFormat)
{
case "SHA1":
result=FormsAuthentication.HashPasswordForStoringInConfigFile(PasswordString ,"SHA1");
break;
case "MD5":
result=FormsAuthentication.HashPasswordForStoringInConfigFile(PasswordString ,"MD5");
break;
default:
result="";
break;
}
return result;
}