katoni/php-ffx

A pure PHP implementation of Format-preserving, Feistel-based encryption (FFX).

v1.0 2023-03-27 07:45 UTC

Requires

• php: ^7.3 || ^8.0
• ext-gmp: *

Requires (Dev)

• mockery/mockery: ^1.4
• phpunit/phpunit: ^9.1.5
• vimeo/psalm: ^3.11

MIT

• Martin Skovvang Petersen

• encryption
• ffx
• fpe
• katoni
• php-ffx

README

A pure PHP implementation of Format-preserving, Feistel-based encryption (FFX).

Ported from emulbreh/pyffx.

Usage

$key = 'hello';
$alphabet = 'abcdefghijklmnopqrstuvwxyz';

$ffx = new \Katoni\FFX\Codecs\Text($key, $alphabet, 10);
$ffx->encrypt('encryption'); // string: jrsunxgmbq

$ffx = new \Katoni\FFX\Codecs\Integer($key, 4);
$ffx->encrypt('1234'); // int: 1867