v0XzJ00r

1<?php
2function encrypt_decrypt($string, $user_id, $action = 'encrypt') {
3	$secret_key = $user_id;
4	$secret_iv = $user_id;
5
6	$output = false;
7	$encrypt_method = "AES-256-CBC";
8	$key = hash( 'sha256', $secret_key );
9	$iv = substr( hash( 'sha256', $secret_iv ), 0, 16 );
10
11	if( $action == 'encrypt' ) {
12		$output = base64_encode( openssl_encrypt( $string, $encrypt_method, $key, 0, $iv ) );
13	} else if( $action == 'decrypt' ){
14		$output = stripslashes(openssl_decrypt( base64_decode( $string ), $encrypt_method, $key, 0, $iv ));
15	}
16	return $output;
17}