WD - Dev
148 lines
3.6 KiB
PHP
148 lines
3.6 KiB
PHP
<?php
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define('SECRET_KEY', 2704960011);
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/*
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|--------------------------------------------------------------------------
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| ENCRYPT FORMAT BARU
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| MP-1234567890-001
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|--------------------------------------------------------------------------
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*/
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function encryptNumberID($id, $dailyNumber = 1)
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{
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$salt = rand(100, 999);
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$raw = ($id + $salt) * SECRET_KEY;
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$middle = substr(
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str_pad($raw, 12, '0', STR_PAD_LEFT),
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0,
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7
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);
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// 001, 002, dst
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$dailyNumber = str_pad($dailyNumber, 3, '0', STR_PAD_LEFT);
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return "MP-$salt$middle-$dailyNumber";
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}
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/*
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|--------------------------------------------------------------------------
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| DECRYPT SUPPORT FORMAT LAMA & BARU
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|--------------------------------------------------------------------------
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| FORMAT LAMA
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| MP-1234567890-54321
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| FORMAT BARU
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| MP-1234567890-001
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|--------------------------------------------------------------------------
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*/
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function decryptNumberID($encrypted)
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{
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/*
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|--------------------------------------------------------------------------
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| FORMAT LAMA (5 digit belakang)
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|--------------------------------------------------------------------------
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*/
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if (preg_match('/^MP-(\d{10})-(\d{5})$/', $encrypted, $matches)) {
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$salt = intval(substr($matches[1], 0, 3));
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$middle = substr($matches[1], 3);
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$checksum = $matches[2];
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for ($id = 1; $id <= 100000; $id++) {
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$raw = ($id + $salt) * SECRET_KEY;
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$encoded = substr(
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str_pad($raw, 12, '0', STR_PAD_LEFT),
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0,
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7
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);
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if ($encoded !== $middle) {
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continue;
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}
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$check = substr(
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strval(($id * 97 + $salt) % 100000),
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-5
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);
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if ($check === $checksum) {
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return $id;
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}
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}
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}
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/*
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|--------------------------------------------------------------------------
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| FORMAT BARU (3 digit belakang)
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|--------------------------------------------------------------------------
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*/
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if (preg_match('/^MP-(\d{10})-(\d{3})$/', $encrypted, $matches)) {
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$salt = intval(substr($matches[1], 0, 3));
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$middle = substr($matches[1], 3);
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for ($id = 1; $id <= 100000; $id++) {
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$raw = ($id + $salt) * SECRET_KEY;
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$encoded = substr(
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str_pad($raw, 12, '0', STR_PAD_LEFT),
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0,
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7
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);
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if ($encoded === $middle) {
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return $id;
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}
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}
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}
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return null;
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}
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// define('SECRET_KEY', 2704960011);
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// function encryptNumberID($id) {
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// $salt = rand(100, 999);
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// $raw = ($id + $salt) * SECRET_KEY;
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// $middle = substr(str_pad($raw, 12, '0', STR_PAD_LEFT), 0, 7);
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// $checksum = substr(strval(($id * 97 + $salt) % 100000), -5);
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// return "MP-$salt$middle-$checksum";
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// }
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// function decryptNumberID($encrypted) {
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// if (!preg_match('/^MP-(\d{10})-(\d{5})$/', $encrypted, $matches)) {
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// return null;
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// }
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// $salt = intval(substr($matches[1], 0, 3));
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// $middle = substr($matches[1], 3);
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// $checksum = $matches[2];
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// $maxTries = 100000;
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// for ($id = 1; $id <= $maxTries; $id++) {
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// $raw = ($id + $salt) * SECRET_KEY;
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// $encoded = substr(str_pad($raw, 12, '0', STR_PAD_LEFT), 0, 7);
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// if ($encoded !== $middle) {
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// continue;
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// }
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// $check = substr(strval(($id * 97 + $salt) % 100000), -5);
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// if ($check === $checksum) {
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// return $id; // ketemu
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// }
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// }
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// return null;
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// }
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