PHP Encryption Sample

encryption_sample.php

<?php
$token = "2";

$cipher_method = 'aes-128-ctr';
$enc_key       = openssl_digest(php_uname(), 'SHA256', TRUE);
$enc_iv        = openssl_random_pseudo_bytes(openssl_cipher_iv_length($cipher_method));
$crypted_token = openssl_encrypt($token, $cipher_method, $enc_key, 0, $enc_iv) . "::" . bin2hex($enc_iv);
unset($token, $cipher_method, $enc_key, $enc_iv);

dump($crypted_token);

list($crypted_token, $enc_iv) = explode("::", $crypted_token);

$cipher_method = 'aes-128-ctr';
$enc_key       = openssl_digest(php_uname(), 'SHA256', TRUE);
$token         = openssl_decrypt($crypted_token, $cipher_method, $enc_key, 0, hex2bin($enc_iv));
unset($crypted_token, $cipher_method, $enc_key, $enc_iv);

dump($token);
?>