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PBKDF2 Key Derivation

Demonstrates AES secret key derivation from a password using PBDKF2. AutoIt

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

Local $sPassword = "correcthorsebatterystaple"

; Derive from the utf-8 byte representation of the password.
Local $sCharset = "utf-8"

Local $sHashAlg = "sha256"

$oCrypt.EncodingMode = "hex"
Local $saltHex = $oCrypt.GenRandomBytesENC(16)

Local $iterationCount = 310000

; Derive a 256-bit key from the password.
Local $iOutputBitLen = 256

; The derived key is returned as a hex or base64 encoded string.
; (Note: The salt argument must be a string that also uses
; the same encoding.)
Local $sEnc = "hex"

Local $sHexKey = $oCrypt.Pbkdf2($sPassword,$sCharset,$sHashAlg,$saltHex,$iterationCount,$iOutputBitLen,$sEnc)

ConsoleWrite($sHexKey & @CRLF)

; Sample output:
; 597734C894FF89CFD3B93D925462C24E97724BCB118F6FC919007F5ABC27E768