Function Reference

_Crypt_DeriveKey

Creates a key from algorithm and password

#include <Crypt.au3>
_Crypt_DeriveKey ( $vPassword, $iAlgID [, $iHashPasswordID = $CALG_MD5] )

Parameters

$vPassword Password to use

$iAlgID Encryption ID of algorithm to be used with the key. See remarks.

$iHashPasswordID [optional] Id of the algo to hash the password with. See remarks.

Return Value

Success: a handle to a cryptographic key.

Failure: sets the @error flag to non-zero.

@error: 10+ - Failed to create hash object
20+ - Failed to hash password
30+ - Failed to generate key
1000+ - Failed to _Crypt_Startup()

Remarks

The key needs to be destroyed with _Crypt_DestroyKey().

Encryption Algorithm ID

$iAlgID	Value	Type	Key-length
$CALG_AES_128	0x0000660e	Cipher block chaining	128 bits
$CALG_AES_192	0x0000660f	Cipher block chaining	192 bits
$CALG_AES_256	0x00006610	Cipher block chaining	256 bits
$CALG_DES	0x00006601	Cipher block chaining	56 bits
$CALG_3DES	0x00006603	Cipher block chaining	168 bits
$CALG_RC2	0x00006602	Block encryption algorithm	128 bits
$CALG_RC4	0x00006801	Stream encryption algorithm	128 bits
$CALG_USERKEY	0

Hashing Algorithm ID

$iHashPasswordID	Value	Type	Key-length
$CALG_MD2	0x00008001	Hashing algorithm	128-bit
$CALG_MD4	0x00008002	Hashing algorithm	128-bit
$CALG_MD5	0x00008003	Hashing algorithm	128-bit
$CALG_SHA1	0x00008004	Hashing algorithm	160-bit
$CALG_SHA_256	0x0000800c	Hashing algorithm	256-bit
$CALG_SHA_384	0x0000800d	Hashing algorithm	384-bit
$CALG_SHA_512	0x0000800e	Hashing algorithm	512-bit

_Crypt_DecryptData, _Crypt_DecryptFile, _Crypt_DestroyKey, _Crypt_EncryptData, _Crypt_EncryptFile

Example

#include <Crypt.au3>
#include <MsgBoxConstants.au3>
Example()
Func  Example()
Local $aStringsToEncrypt[6]= ["AutoIt","SciTE","Crypt",".au3",42,"42"]
Local $sOutput= ""
Local $hKey= _Crypt_DeriveKey ("CryptPassword",$CALG_RC4); Declare a password string and algorithm to create a cryptographic key.
For $vTextIn $aStringsToEncrypt
$sOutput&=$vText&@TAB &" = "&_Crypt_EncryptData ($vText,$hKey,$CALG_USERKEY)&@CRLF ; Encrypt the text with the cryptographic key.
Next
MsgBox ($MB_SYSTEMMODAL,"Encrypted data",$sOutput)
_Crypt_DestroyKey ($hKey); Destroy the cryptographic key.
EndFunc ;==>Example