AutoIt

Hash Binary Data (SHA256 and other hash algorithms)

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

Local $bSuccess = False

;  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..
$oJpgData = ObjCreate("Chilkat.BinData")
$bSuccess = $oJpgData.LoadFile("qa_data/jpg/starfish.jpg")
If ($bSuccess <> True) Then
    ConsoleWrite("Failed to load file." & @CRLF)
    Exit
EndIf

Local $oJpgBytes
$oJpgBytes = $oJpgData.GetBinary()

$oCrypt = ObjCreate("Chilkat.Crypt2")

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

Local $oHashBytes
$oHashBytes = $oCrypt.HashBytes($oJpgBytes)

;  Let's examine the hash as a hex string.
$oSb = ObjCreate("Chilkat.StringBuilder")
$oSb.AppendEncoded($oHashBytes,"hex")
ConsoleWrite("SHA256 hash = " & $oSb.GetAsString() & @CRLF)

;  We could alternatively hash the bytes and receive the hex result directly:
$oCrypt.EncodingMode = "hex"
Local $sHashHexStr = $oCrypt.HashBytesENC($oJpgBytes)
ConsoleWrite("SHA256 hash = " & $sHashHexStr & @CRLF)