Classic ASP

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password) ) )

Demonstrates how to compute:

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password)))

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Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

password = "secret"

set crypt = Server.CreateObject("Chilkat.Crypt2")
crypt.HashAlgorithm = "SHA-1"
crypt.EncodingMode = "base64"

' Generate a 16-byte random nonce
set prng = Server.CreateObject("Chilkat.Prng")
set bd = Server.CreateObject("Chilkat.BinData")
success = prng.GenRandomBd(16,bd)

' Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
set dt = Server.CreateObject("Chilkat.CkDateTime")
success = dt.SetFromCurrentSystemTime()
created = dt.GetAsTimestamp(0)
success = bd.AppendString(created,"utf-8")

' This example wishes to calculate a password digest like this:
' Password_Digest = Base64 ( SHA-1 ( nonce + created + SHA-1(password) ) )

' First SHA-1 digest the password...
passwordSha1 = crypt.HashStringENC(password)
' Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
success = bd.AppendEncoded(passwordSha1,"base64")

passwordDigest = crypt.HashBdENC(bd)

Response.Write "<pre>" & Server.HTMLEncode( "Base64 password digest = " & passwordDigest) & "</pre>"

%>
</body>
</html>