Classic ASP

Hash Binary Data (SHA256 and other hash algorithms)

Demonstrates how to hash binary bytes using SHA256, SHA384, SHA512, MD2, MD5, HAVAL, RIPEMD, etc.

Chilkat Classic ASP Downloads

Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

' This example requires the Chilkat API to have been previously unlocked.
' See Global Unlock Sample for sample code.

' Let's load a binary file to get the bytes..
set jpgData = Server.CreateObject("Chilkat.BinData")
success = jpgData.LoadFile("qa_data/jpg/starfish.jpg")
If (success <> 1) Then
    Response.Write "<pre>" & Server.HTMLEncode( "Failed to load file.") & "</pre>"
    Response.End
End If

jpgBytes = jpgData.GetBinary()

set crypt = Server.CreateObject("Chilkat.Crypt2")

' Choose the hash algorithm.
' Can be  "sha1", "sha256", "sha384", "sha512", "md2", "md5", "haval", "ripemd128", "ripemd160","ripemd256", or "ripemd320".
crypt.HashAlgorithm = "sha256"

hashBytes = crypt.HashBytes(jpgBytes)

' Let's examine the hash as a hex string.
set sb = Server.CreateObject("Chilkat.StringBuilder")
success = sb.AppendEncoded(hashBytes,"hex")
Response.Write "<pre>" & Server.HTMLEncode( "SHA256 hash = " & sb.GetAsString()) & "</pre>"

' We could alternatively hash the bytes and receive the hex result directly:
crypt.EncodingMode = "hex"
hashHexStr = crypt.HashBytesENC(jpgBytes)
Response.Write "<pre>" & Server.HTMLEncode( "SHA256 hash = " & hashHexStr) & "</pre>"

%>
</body>
</html>