<?php
function encrypt($plaintext, $password)
{
$method = "AES-256-CBC";
$key = hash('sha256', $password, true);
$iv = openssl_random_pseudo_bytes(16);
$ciphertext = openssl_encrypt($plaintext, $method, $key, OPENSSL_RAW_DATA, $iv);
$hash = hash_hmac('sha256', $ciphertext, $key, true);
return $iv . $hash . $ciphertext;
}
function decrypt($ivHashCiphertext, $password)
{
$method = "AES-256-CBC";
$iv = substr($ivHashCiphertext, 0, 16);
$hash = substr($ivHashCiphertext, 16, 32);
$ciphertext = substr($ivHashCiphertext, 48);
$key = hash('sha256', $password, true);
if (hash_hmac('sha256', $ciphertext, $key, true) !== $hash)
return null;
return openssl_decrypt($ciphertext, $method, $key, OPENSSL_RAW_DATA, $iv);
}
function new_license(){
}
function validate_license($lic){
$license=explode("-", $lic);
//print_r($license);
echo "\n".cntrl_summ($license['2'],0);
//echo cntrl_summ($license['2'],0);
}
function cntrl_summ ($num, $num_old, $last_num=false){
$x = (int)$num;
$s = 0;
while ($x <> 0) {
$s = $s + $x % 10;
$x = fmod($x ,10 );
echo $x;
}
if ($x==0) {
echo 0;
} else echo 1;
}
$k = 'https://mlx.su/'. md5(rand());
$sn = sha1('1314-6685-000-65908');
echo base64_encode(encrypt($k, $sn));
validate_license('1314-6685-000-65908');
Replies to Untitled
Title |
Name |
Language |
UNIX |
When |
Re: Untitled |
Anorexic Hog |
php |
1558059604 |
5 Years ago. |
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