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AES Encryption

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AES encryption. The Chilkat encryption component supports 128-bit, 192-bit, and 256-bit AES encryption in ECB (Electronic Cookbook), CBC (Cipher-Block Chaining), and other modes. AutoIt

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

$oCrypt = ObjCreate("Chilkat.Crypt2")

; AES is also known as Rijndael.		
$oCrypt.CryptAlgorithm = "aes"

; CipherMode may be "ecb", "cbc", "ofb", "cfb", "gcm", etc.
; Note: Check the online reference documentation to see the Chilkat versions
; when certain cipher modes were introduced.
$oCrypt.CipherMode = "cbc"

; KeyLength may be 128, 192, 256
$oCrypt.KeyLength = 256

; 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.  AES has a block
; size of 16 bytes, so encrypted output is always
; a multiple of 16.
$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 mode.
; 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 = "000102030405060708090A0B0C0D0E0F"
$oCrypt.SetEncodedIV $sIvHex,"hex"

; The secret key must equal the size of the key.  For
; 256-bit encryption, the binary secret key is 32 bytes.
; For 128-bit encryption, the binary secret key is 16 bytes.
Local $sKeyHex = "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F"
$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 16).
; 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)

; This is the encrypted output in hex format:
; 4846F83AA211E239AA62A21F527F089EE9DDBEAD30EE15D4E79B607A621B97BEDB9B6F00A9B21F1B43A50B4C1BE0EDF2

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

; This is the decrypted string:
; The quick brown fox jumps over the lazy dog.