AutoIt

Demonstrates the MacBytes Method

Demonstrates the MacBytes method to do HMAC-SHA256, HMAC-SHA1, and HMAC-MD5. AutoIt

;  This example assumes Chilkat Crypt2 to have been previously unlocked.
;  See Unlock Crypt2 for sample code.

;  Demonstrates how to reproduce the following results found at
;  https://en.wikipedia.org/wiki/Hash-based_message_authentication_code

;  HMAC_SHA256("key", "The quick brown fox jumps over the lazy dog") = 0xf7bc83f430538424b13298e6aa6fb143ef4d59a14946175997479dbc2d1a3cd8
;  HMAC_MD5("key", "The quick brown fox jumps over the lazy dog")    = 0x80070713463e7749b90c2dc24911e275
;  HMAC_SHA1("key", "The quick brown fox jumps over the lazy dog")   = 0xde7c9b85b8b78aa6bc8a7a36f70a90701c9db4d9

$oCrypt = ObjCreate("Chilkat.Crypt2")

$oCrypt.MacAlgorithm = "hmac"
$oCrypt.EncodingMode = "hex"
$oCrypt.SetMacKeyString("key")
Local $sData = "The quick brown fox jumps over the lazy dog"

;  We're doing this in a convoluted, roundabout fashion to show syntax
;  and data types for handling binary data.
;  The straightforward way of doing an HMAC on a string is
;  shown here: HMAC String
Local $oDataToHmac
$oBinData = ObjCreate("Chilkat.BinData")
$oBinData.AppendString($sData,"utf-8")
$oDataToHmac = $oBinData.GetBinary()

Local $oMacBytes

$oCrypt.HashAlgorithm = "SHA-256"
$oMacBytes = $oCrypt.MacBytes($oDataToHmac)
$oBinData.Clear()
$oBinData.AppendBinary($oMacBytes)
ConsoleWrite("HMAC_SHA256: " & $oBinData.GetEncoded("hex") & @CRLF)

$oCrypt.HashAlgorithm = "MD5"
$oMacBytes = $oCrypt.MacBytes($oDataToHmac)
$oBinData.Clear()
$oBinData.AppendBinary($oMacBytes)
ConsoleWrite("HMAC_MD5: " & $oBinData.GetEncoded("hex") & @CRLF)

$oCrypt.HashAlgorithm = "SHA-1"
$oMacBytes = $oCrypt.MacBytes($oDataToHmac)
$oBinData.Clear()
$oBinData.AppendBinary($oMacBytes)
ConsoleWrite("HMAC_SHA1: " & $oBinData.GetEncoded("hex") & @CRLF)

;  The output is the same (ignore case)
;  HMAC_SHA256: F7BC83F430538424B13298E6AA6FB143EF4D59A14946175997479DBC2D1A3CD8
;  HMAC_MD5: 80070713463E7749B90C2DC24911E275
;  HMAC_SHA1: DE7C9B85B8B78AA6BC8A7A36F70A90701C9DB4D9