(AutoIt) 56-bit DES Encryption, ECB, CBC modes

Demonstrates the older 56-bit DES encryption in ECB and CBC modes.

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

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

; Specify DES for the encryption algorithm:
$oCrypt.CryptAlgorithm = "des"

; CipherMode may be "ecb" or "cbc"
$oCrypt.CipherMode = "cbc"

; Keylength is 64 bits (56 bits + 8 parity bits)
$oCrypt.KeyLength = 64

; The padding scheme determines the contents of the bytes
; that are added to pad the result to a multiple of the
; encryption algorithm's block size.  DES has a block
; size of 8 bytes, so encrypted output is always
; a multiple of 8.
$oCrypt.PaddingScheme = 0

; EncodingMode specifies the encoding of the output for
; encryption, and the input for decryption.
; It may be "hex", "url", "base64", or "quoted-printable".
$oCrypt.EncodingMode = "hex"

; An initialization vector is required if using CBC or CFB modes.
; ECB mode does not use an IV.
; The length of the IV is equal to the algorithm's block size.
; It is NOT equal to the length of the key.
Local $sIvHex = "0001020304050607"
$oCrypt.SetEncodedIV $sIvHex,"hex"

; The secret key must equal the size of the key.  For 
; DES, the key must be 8 bytes (i.e. 64-bits).
Local $sKeyHex = "0001020304050607"
$oCrypt.SetEncodedKey $sKeyHex,"hex"

; Encrypt a string...
; The input string is 44 ANSI characters (i.e. 44 bytes), so
; the output should be 48 bytes (a multiple of 8).
; Because the output is a hex string, it should
; be 96 characters long (2 chars per byte).
Local $sEncStr = $oCrypt.EncryptStringENC("The quick brown fox jumps over the lazy dog.")
ConsoleWrite($sEncStr & @CRLF)

; Now decrypt:
Local $sDecStr = $oCrypt.DecryptStringENC($sEncStr)
ConsoleWrite($sDecStr & @CRLF)