The goal of this page is to put two MD5 code samples on the same web page, one for ASP classic and one for ASP.NET. String formatting (like ASCII vs UTF-8) can trip up coding these two routines. These two code samples will produce the same MD5 hash output.
Classic ASP/VBScript MD5
The ASP code is simple once you have a copy of md5.asp from http://frez.co.uk. The only file in the ZIP that you need is md5.asp.
The keys to getting the .net output to match are
<%@ Import Namespace="System.Security.Cryptography" %>
<script language="VB" runat="server">
Public Sub Page_Load( sender As Object, e As EventArgs )
Dim strPlainText as String = "email@example.com"
dim md5Hasher as MD5 = MD5.create( )
dim result as byte( ) = md5Hasher.computeHash( encoding.ascii.getBytes( strPlainText))
for each singleByte as byte in result
response.write ( singleByte.ToString("x2") )