3DES_crypt

des3.php

<?php

#$key = 'sq7HjrUOBfKmC576ILgskD5srU870gJ7';
#$order = '12345';

$key = $argv[1];
$order = $argv[2];

$bytes = array(0,0,0,0,0,0,0,0);
$iv = implode(array_map("chr", $bytes));
$ct = mcrypt_encrypt(MCRYPT_3DES, base64_decode($key), $order, MCRYPT_MODE_CBC, $iv);

#echo $ct . '\n';
echo "Base 64 encoded key:\n";
echo base64_encode($ct);
echo "\n";

Dockerfile

FROM php:5.6-cli

RUN apt-get update && apt-get install -y libmcrypt-dev \
    && docker-php-ext-install mcrypt

CMD ["php"]