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PBES2 Password-Based Encryption

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Demonstrates PBES2 encryption AutoIt

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

; Set properties for PBES2 encryption:

; When the encryption algorithm is set to "pbes2",
; Chilkat will automatically derive the actual secret key using PBKDF2 and
; the specified paramters: password, salt, iteration count, hash function, and desired key length.

$oCrypt.CryptAlgorithm = "pbes2"
$oCrypt.PbesPassword = "mySecretPassword"

; Set the underlying PBE algorithm (and key length):
$oCrypt.PbesAlgorithm = "aes"
$oCrypt.KeyLength = 256

$oCrypt.SetEncodedIV "000102030405060708090A0B0C0D0E0F","hex"

; Give it some salt:
$oCrypt.SetEncodedSalt "0102030405060708","hex"

; A higher iteration count makes the algorithm more
; computationally expensive and therefore exhaustive
; searches (for breaking the encryption) is more difficult:
$oCrypt.IterationCount = 1024

; A hash algorithm needs to be set for PBES2:
$oCrypt.HashAlgorithm = "sha256"

; Indicate that the encrypted bytes should be returned
; as a hex string:
$oCrypt.EncodingMode = "hex"

Local $sPlainText = "To be encrypted."

Local $sEncryptedText = $oCrypt.EncryptStringENC($sPlainText)

ConsoleWrite($sEncryptedText & @CRLF)

; Now decrypt:
Local $sDecryptedText = $oCrypt.DecryptStringENC($sEncryptedText)

ConsoleWrite($sDecryptedText & @CRLF)