(VBScript) Hash Binary Data (SHA256 and other hash algorithms)

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Dim fso, outFile
Set fso = CreateObject("Scripting.FileSystemObject")
'Create a Unicode (utf-16) output text file.
Set outFile = fso.CreateTextFile("output.txt", True, True)

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

' Let's load a binary file to get the bytes..
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.BinData")
set jpgData = CreateObject("Chilkat.BinData")
success = jpgData.LoadFile("qa_data/jpg/starfish.jpg")
If (success <> 1) Then
    outFile.WriteLine("Failed to load file.")
    WScript.Quit
End If

jpgBytes = jpgData.GetBinary()

' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.Crypt2")
set crypt = 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.
' For versions of Chilkat < 10.0.0, use CreateObject("Chilkat_9_5_0.StringBuilder")
set sb = CreateObject("Chilkat.StringBuilder")
success = sb.AppendEncoded(hashBytes,"hex")
outFile.WriteLine("SHA256 hash = " & sb.GetAsString())

' We could alternatively hash the bytes and receive the hex result directly:
crypt.EncodingMode = "hex"
hashHexStr = crypt.HashBytesENC(jpgBytes)
outFile.WriteLine("SHA256 hash = " & hashHexStr)

outFile.Close