Delphi DLL

Blowfish Encryption to Match PHP's Mcrypt Extension

See more Encryption Examples

Demonstrates how to match Blowfish encryption results with PHP's mcrypt extension.

Please refer to this PHP (non-Chilkat) example for PHP Blowfish Encryption. The code here matches the PHP mcrypt results on that web page.

Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Crypt2;

...

procedure TForm1.Button1Click(Sender: TObject);
var
crypt: HCkCrypt2;
ivAscii: PWideChar;
keyAscii: PWideChar;
plainText: PWideChar;
cipherText: PWideChar;

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

crypt := CkCrypt2_Create();

// Use "blowfish2" to get proper results:
CkCrypt2_putCryptAlgorithm(crypt,'blowfish2');

// CipherMode may be "ecb" or "cbc"
CkCrypt2_putCipherMode(crypt,'cbc');

// KeyLength (in bits) may be a number between 32 and 448.
// 128-bits is usually sufficient.  The KeyLength must be a 
// multiple of 8.
CkCrypt2_putKeyLength(crypt,256);

// Pad with NULL bytes (PHP pads with NULL bytes)
CkCrypt2_putPaddingScheme(crypt,3);

// EncodingMode specifies the encoding of the output for
// encryption, and the input for decryption.
// It may be "hex", "url", "base64", or "quoted-printable".
CkCrypt2_putEncodingMode(crypt,'hex');

// The blowfish algorithm uses a 64-bit block size, 
// therefore the IV must be 8 bytes:
ivAscii := '12345678';
CkCrypt2_SetEncodedIV(crypt,ivAscii,'ascii');

// For 256-bit encryption, the key is 32 bytes:
keyAscii := '1234567890123456ABCDEFGHIJKLMNOP';
CkCrypt2_SetEncodedKey(crypt,keyAscii,'ascii');

plainText := 'The quick brown fox jumped over the lazy dog';

cipherText := CkCrypt2__encryptStringENC(crypt,plainText);
Memo1.Lines.Add(cipherText);
// Output should be (case insensitive):
// 276855ca6c0d60f7d9708210440c1072e05d078e733b34b4198d609dc2fcc2f0c30926cdef3b6d52baf6e345aa03f83e

// Do 128-bit Blowfish encryption:
CkCrypt2_putKeyLength(crypt,128);
keyAscii := '1234567890123456';
CkCrypt2_SetEncodedKey(crypt,keyAscii,'ascii');

cipherText := CkCrypt2__encryptStringENC(crypt,plainText);
Memo1.Lines.Add(cipherText);
// Output should be (case insensitive):
// d2b5abb73208aea3790621d028afcc74d8dd65fb9ea8e666444a72523f5ecca60df79a424e2c714fa6efbafcc40bdca

CkCrypt2_Dispose(crypt);

end;