byte[] data = new byte[DATA_SIZE];
byte[] result;
SHA512 shaM = new SHA512Managed();
result = shaM.ComputeHash("User");
this wil giv ur SHA512 computed hash value.
take a look at the following to use other function.
http://msdn.microsoft.com/en-us/library/9eat8fht%28v=VS.71%29.aspx[
^]
Or try using the session values, so that when redirecting you dont hav to post the values into ur url. Which is simple
simply use it lik
<pre>Session["User"]="xxxx";
Session["ps"]="xxxx";
...
Response.Redirect("http://xxx.xxx.com/WebServiceSMS.aspx");