Your IP : 216.73.217.79
<?php
/*
* Encrypt and decrypt forgot text
*/
namespace App\CoreBundle\Services;
use Defuse\Crypto\Crypto;
use Defuse\Crypto\Key;
/**
* Encrypt and decrypt strings
*
* @author otto
*/
class Openssl_EncryptDecrypt {
public $encryption_key = 'def000005f0b4dc0f66e4309bc5fde80177a37b5071203378857d90427b38d67ad39a228012db434a17450c89d49d32e03617420c6f50908a65303df3e27f001295d9982';
function encrypt($pure_string) {
return Crypto::encrypt($pure_string, Key::loadFromAsciiSafeString($this->encryption_key));
/*
$cipher = 'AES-256-CBC';
$options = OPENSSL_RAW_DATA;
$hash_algo = 'sha256';
$sha2len = 32;
$ivlen = openssl_cipher_iv_length($cipher);
$iv = openssl_random_pseudo_bytes($ivlen);
$ciphertext_raw = openssl_encrypt($pure_string, $cipher, $this->encryption_key, $options, $iv);
$hmac = hash_hmac($hash_algo, $ciphertext_raw, $this->encryption_key, true);
return $iv . $hmac . $ciphertext_raw;
*/
}
function decrypt($encrypted_string) {
return Crypto::decrypt($encrypted_string, Key::loadFromAsciiSafeString($this->encryption_key));
/*
$cipher = 'AES-256-CBC';
$options = OPENSSL_RAW_DATA;
$hash_algo = 'sha256';
$sha2len = 32;
$ivlen = openssl_cipher_iv_length($cipher);
$iv = substr($encrypted_string, 0, $ivlen);
$hmac = substr($encrypted_string, $ivlen, $sha2len);
$ciphertext_raw = substr($encrypted_string, $ivlen + $sha2len);
$original_plaintext = openssl_decrypt($ciphertext_raw, $cipher, $this->encryption_key, $options, $iv);
$calcmac = hash_hmac($hash_algo, $ciphertext_raw, $this->encryption_key, true);
if (function_exists('hash_equals')) {
if (hash_equals($hmac, $calcmac))
return $original_plaintext;
} else {
if ($this->hash_equals_custom($hmac, $calcmac))
return $original_plaintext;
}
*/
}
/**
* (Optional)
* hash_equals() function polyfilling.
* PHP 5.6+ timing attack safe comparison
*/
function hash_equals_custom($knownString, $userString) {
if (function_exists('mb_strlen')) {
$kLen = mb_strlen($knownString, '8bit');
$uLen = mb_strlen($userString, '8bit');
} else {
$kLen = strlen($knownString);
$uLen = strlen($userString);
}
if ($kLen !== $uLen) {
return false;
}
$result = 0;
for ($i = 0; $i < $kLen; $i++) {
$result |= (ord($knownString[$i]) ^ ord($userString[$i]));
}
return 0 === $result;
}
}