/home/kueuepay/public_html/vendor/phpseclib/phpseclib/phpseclib/Crypt/RC2.php
<?php
/**
* Pure-PHP implementation of RC2.
*
* Uses mcrypt, if available, and an internal implementation, otherwise.
*
* PHP version 5
*
* Useful resources are as follows:
*
* - {@link http://tools.ietf.org/html/rfc2268}
*
* Here's a short example of how to use this library:
* <code>
* <?php
* include 'vendor/autoload.php';
*
* $rc2 = new \phpseclib3\Crypt\RC2('ctr');
*
* $rc2->setKey('abcdefgh');
*
* $plaintext = str_repeat('a', 1024);
*
* echo $rc2->decrypt($rc2->encrypt($plaintext));
* ?>
* </code>
*
* @author Patrick Monnerat <pm@datasphere.ch>
* @license http://www.opensource.org/licenses/mit-license.html MIT License
* @link http://phpseclib.sourceforge.net
*/
namespace phpseclib3\Crypt;
use phpseclib3\Crypt\Common\BlockCipher;
use phpseclib3\Exception\BadModeException;
/**
* Pure-PHP implementation of RC2.
*
*/
class RC2 extends BlockCipher
{
/**
* Block Length of the cipher
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::block_size
* @var int
*/
protected $block_size = 8;
/**
* The Key
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::key
* @see self::setKey()
* @var string
*/
protected $key;
/**
* The Original (unpadded) Key
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::key
* @see self::setKey()
* @see self::encrypt()
* @see self::decrypt()
* @var string
*/
private $orig_key;
/**
* Key Length (in bytes)
*
* @see \phpseclib3\Crypt\RC2::setKeyLength()
* @var int
*/
protected $key_length = 16; // = 128 bits
/**
* The mcrypt specific name of the cipher
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::cipher_name_mcrypt
* @var string
*/
protected $cipher_name_mcrypt = 'rc2';
/**
* Optimizing value while CFB-encrypting
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::cfb_init_len
* @var int
*/
protected $cfb_init_len = 500;
/**
* The key length in bits.
*
* {@internal Should be in range [1..1024].}
*
* {@internal Changing this value after setting the key has no effect.}
*
* @see self::setKeyLength()
* @see self::setKey()
* @var int
*/
private $default_key_length = 1024;
/**
* The key length in bits.
*
* {@internal Should be in range [1..1024].}
*
* @see self::isValidEnine()
* @see self::setKey()
* @var int
*/
private $current_key_length;
/**
* The Key Schedule
*
* @see self::setupKey()
* @var array
*/
private $keys;
/**
* Key expansion randomization table.
* Twice the same 256-value sequence to save a modulus in key expansion.
*
* @see self::setKey()
* @var array
*/
private static $pitable = [
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD,
0xD9, 0x78, 0xF9, 0xC4, 0x19, 0xDD, 0xB5, 0xED,
0x28, 0xE9, 0xFD, 0x79, 0x4A, 0xA0, 0xD8, 0x9D,
0xC6, 0x7E, 0x37, 0x83, 0x2B, 0x76, 0x53, 0x8E,
0x62, 0x4C, 0x64, 0x88, 0x44, 0x8B, 0xFB, 0xA2,
0x17, 0x9A, 0x59, 0xF5, 0x87, 0xB3, 0x4F, 0x13,
0x61, 0x45, 0x6D, 0x8D, 0x09, 0x81, 0x7D, 0x32,
0xBD, 0x8F, 0x40, 0xEB, 0x86, 0xB7, 0x7B, 0x0B,
0xF0, 0x95, 0x21, 0x22, 0x5C, 0x6B, 0x4E, 0x82,
0x54, 0xD6, 0x65, 0x93, 0xCE, 0x60, 0xB2, 0x1C,
0x73, 0x56, 0xC0, 0x14, 0xA7, 0x8C, 0xF1, 0xDC,
0x12, 0x75, 0xCA, 0x1F, 0x3B, 0xBE, 0xE4, 0xD1,
0x42, 0x3D, 0xD4, 0x30, 0xA3, 0x3C, 0xB6, 0x26,
0x6F, 0xBF, 0x0E, 0xDA, 0x46, 0x69, 0x07, 0x57,
0x27, 0xF2, 0x1D, 0x9B, 0xBC, 0x94, 0x43, 0x03,
0xF8, 0x11, 0xC7, 0xF6, 0x90, 0xEF, 0x3E, 0xE7,
0x06, 0xC3, 0xD5, 0x2F, 0xC8, 0x66, 0x1E, 0xD7,
0x08, 0xE8, 0xEA, 0xDE, 0x80, 0x52, 0xEE, 0xF7,
0x84, 0xAA, 0x72, 0xAC, 0x35, 0x4D, 0x6A, 0x2A,
0x96, 0x1A, 0xD2, 0x71, 0x5A, 0x15, 0x49, 0x74,
0x4B, 0x9F, 0xD0, 0x5E, 0x04, 0x18, 0xA4, 0xEC,
0xC2, 0xE0, 0x41, 0x6E, 0x0F, 0x51, 0xCB, 0xCC,
0x24, 0x91, 0xAF, 0x50, 0xA1, 0xF4, 0x70, 0x39,
0x99, 0x7C, 0x3A, 0x85, 0x23, 0xB8, 0xB4, 0x7A,
0xFC, 0x02, 0x36, 0x5B, 0x25, 0x55, 0x97, 0x31,
0x2D, 0x5D, 0xFA, 0x98, 0xE3, 0x8A, 0x92, 0xAE,
0x05, 0xDF, 0x29, 0x10, 0x67, 0x6C, 0xBA, 0xC9,
0xD3, 0x00, 0xE6, 0xCF, 0xE1, 0x9E, 0xA8, 0x2C,
0x63, 0x16, 0x01, 0x3F, 0x58, 0xE2, 0x89, 0xA9,
0x0D, 0x38, 0x34, 0x1B, 0xAB, 0x33, 0xFF, 0xB0,
0xBB, 0x48, 0x0C, 0x5F, 0xB9, 0xB1, 0xCD, 0x2E,
0xC5, 0xF3, 0xDB, 0x47, 0xE5, 0xA5, 0x9C, 0x77,
0x0A, 0xA6, 0x20, 0x68, 0xFE, 0x7F, 0xC1, 0xAD
];
/**
* Inverse key expansion randomization table.
*
* @see self::setKey()
* @var array
*/
private static $invpitable = [
0xD1, 0xDA, 0xB9, 0x6F, 0x9C, 0xC8, 0x78, 0x66,
0x80, 0x2C, 0xF8, 0x37, 0xEA, 0xE0, 0x62, 0xA4,
0xCB, 0x71, 0x50, 0x27, 0x4B, 0x95, 0xD9, 0x20,
0x9D, 0x04, 0x91, 0xE3, 0x47, 0x6A, 0x7E, 0x53,
0xFA, 0x3A, 0x3B, 0xB4, 0xA8, 0xBC, 0x5F, 0x68,
0x08, 0xCA, 0x8F, 0x14, 0xD7, 0xC0, 0xEF, 0x7B,
0x5B, 0xBF, 0x2F, 0xE5, 0xE2, 0x8C, 0xBA, 0x12,
0xE1, 0xAF, 0xB2, 0x54, 0x5D, 0x59, 0x76, 0xDB,
0x32, 0xA2, 0x58, 0x6E, 0x1C, 0x29, 0x64, 0xF3,
0xE9, 0x96, 0x0C, 0x98, 0x19, 0x8D, 0x3E, 0x26,
0xAB, 0xA5, 0x85, 0x16, 0x40, 0xBD, 0x49, 0x67,
0xDC, 0x22, 0x94, 0xBB, 0x3C, 0xC1, 0x9B, 0xEB,
0x45, 0x28, 0x18, 0xD8, 0x1A, 0x42, 0x7D, 0xCC,
0xFB, 0x65, 0x8E, 0x3D, 0xCD, 0x2A, 0xA3, 0x60,
0xAE, 0x93, 0x8A, 0x48, 0x97, 0x51, 0x15, 0xF7,
0x01, 0x0B, 0xB7, 0x36, 0xB1, 0x2E, 0x11, 0xFD,
0x84, 0x2D, 0x3F, 0x13, 0x88, 0xB3, 0x34, 0x24,
0x1B, 0xDE, 0xC5, 0x1D, 0x4D, 0x2B, 0x17, 0x31,
0x74, 0xA9, 0xC6, 0x43, 0x6D, 0x39, 0x90, 0xBE,
0xC3, 0xB0, 0x21, 0x6B, 0xF6, 0x0F, 0xD5, 0x99,
0x0D, 0xAC, 0x1F, 0x5C, 0x9E, 0xF5, 0xF9, 0x4C,
0xD6, 0xDF, 0x89, 0xE4, 0x8B, 0xFF, 0xC7, 0xAA,
0xE7, 0xED, 0x46, 0x25, 0xB6, 0x06, 0x5E, 0x35,
0xB5, 0xEC, 0xCE, 0xE8, 0x6C, 0x30, 0x55, 0x61,
0x4A, 0xFE, 0xA0, 0x79, 0x03, 0xF0, 0x10, 0x72,
0x7C, 0xCF, 0x52, 0xA6, 0xA7, 0xEE, 0x44, 0xD3,
0x9A, 0x57, 0x92, 0xD0, 0x5A, 0x7A, 0x41, 0x7F,
0x0E, 0x00, 0x63, 0xF2, 0x4F, 0x05, 0x83, 0xC9,
0xA1, 0xD4, 0xDD, 0xC4, 0x56, 0xF4, 0xD2, 0x77,
0x81, 0x09, 0x82, 0x33, 0x9F, 0x07, 0x86, 0x75,
0x38, 0x4E, 0x69, 0xF1, 0xAD, 0x23, 0x73, 0x87,
0x70, 0x02, 0xC2, 0x1E, 0xB8, 0x0A, 0xFC, 0xE6
];
/**
* Default Constructor.
*
* @param string $mode
* @throws \InvalidArgumentException if an invalid / unsupported mode is provided
*/
public function __construct($mode)
{
parent::__construct($mode);
if ($this->mode == self::MODE_STREAM) {
throw new BadModeException('Block ciphers cannot be ran in stream mode');
}
}
/**
* Test for engine validity
*
* This is mainly just a wrapper to set things up for \phpseclib3\Crypt\Common\SymmetricKey::isValidEngine()
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::__construct()
* @param int $engine
* @return bool
*/
protected function isValidEngineHelper($engine)
{
switch ($engine) {
case self::ENGINE_OPENSSL:
if ($this->current_key_length != 128 || strlen($this->orig_key) < 16) {
return false;
}
// quoting https://www.openssl.org/news/openssl-3.0-notes.html, OpenSSL 3.0.1
// "Moved all variations of the EVP ciphers CAST5, BF, IDEA, SEED, RC2, RC4, RC5, and DES to the legacy provider"
// in theory openssl_get_cipher_methods() should catch this but, on GitHub Actions, at least, it does not
if (defined('OPENSSL_VERSION_TEXT') && version_compare(preg_replace('#OpenSSL (\d+\.\d+\.\d+) .*#', '$1', OPENSSL_VERSION_TEXT), '3.0.1', '>=')) {
return false;
}
$this->cipher_name_openssl_ecb = 'rc2-ecb';
$this->cipher_name_openssl = 'rc2-' . $this->openssl_translate_mode();
}
return parent::isValidEngineHelper($engine);
}
/**
* Sets the key length.
*
* Valid key lengths are 8 to 1024.
* Calling this function after setting the key has no effect until the next
* \phpseclib3\Crypt\RC2::setKey() call.
*
* @param int $length in bits
* @throws \LengthException if the key length isn't supported
*/
public function setKeyLength($length)
{
if ($length < 8 || $length > 1024) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
}
$this->default_key_length = $this->current_key_length = $length;
$this->explicit_key_length = $length >> 3;
}
/**
* Returns the current key length
*
* @return int
*/
public function getKeyLength()
{
return $this->current_key_length;
}
/**
* Sets the key.
*
* Keys can be of any length. RC2, itself, uses 8 to 1024 bit keys (eg.
* strlen($key) <= 128), however, we only use the first 128 bytes if $key
* has more then 128 bytes in it, and set $key to a single null byte if
* it is empty.
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::setKey()
* @param string $key
* @param int|boolean $t1 optional Effective key length in bits.
* @throws \LengthException if the key length isn't supported
*/
public function setKey($key, $t1 = false)
{
$this->orig_key = $key;
if ($t1 === false) {
$t1 = $this->default_key_length;
}
if ($t1 < 1 || $t1 > 1024) {
throw new \LengthException('Key size of ' . $length . ' bits is not supported by this algorithm. Only keys between 1 and 1024 bits, inclusive, are supported');
}
$this->current_key_length = $t1;
if (strlen($key) < 1 || strlen($key) > 128) {
throw new \LengthException('Key of size ' . strlen($key) . ' not supported by this algorithm. Only keys of sizes between 8 and 1024 bits, inclusive, are supported');
}
$t = strlen($key);
// The mcrypt RC2 implementation only supports effective key length
// of 1024 bits. It is however possible to handle effective key
// lengths in range 1..1024 by expanding the key and applying
// inverse pitable mapping to the first byte before submitting it
// to mcrypt.
// Key expansion.
$l = array_values(unpack('C*', $key));
$t8 = ($t1 + 7) >> 3;
$tm = 0xFF >> (8 * $t8 - $t1);
// Expand key.
$pitable = self::$pitable;
for ($i = $t; $i < 128; $i++) {
$l[$i] = $pitable[$l[$i - 1] + $l[$i - $t]];
}
$i = 128 - $t8;
$l[$i] = $pitable[$l[$i] & $tm];
while ($i--) {
$l[$i] = $pitable[$l[$i + 1] ^ $l[$i + $t8]];
}
// Prepare the key for mcrypt.
$l[0] = self::$invpitable[$l[0]];
array_unshift($l, 'C*');
$this->key = pack(...$l);
$this->key_length = strlen($this->key);
$this->changed = $this->nonIVChanged = true;
$this->setEngine();
}
/**
* Encrypts a message.
*
* Mostly a wrapper for \phpseclib3\Crypt\Common\SymmetricKey::encrypt, with some additional OpenSSL handling code
*
* @see self::decrypt()
* @param string $plaintext
* @return string $ciphertext
*/
public function encrypt($plaintext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::encrypt($plaintext);
$this->key = $temp;
return $result;
}
return parent::encrypt($plaintext);
}
/**
* Decrypts a message.
*
* Mostly a wrapper for \phpseclib3\Crypt\Common\SymmetricKey::decrypt, with some additional OpenSSL handling code
*
* @see self::encrypt()
* @param string $ciphertext
* @return string $plaintext
*/
public function decrypt($ciphertext)
{
if ($this->engine == self::ENGINE_OPENSSL) {
$temp = $this->key;
$this->key = $this->orig_key;
$result = parent::decrypt($ciphertext);
$this->key = $temp;
return $result;
}
return parent::decrypt($ciphertext);
}
/**
* Encrypts a block
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::encryptBlock()
* @see \phpseclib3\Crypt\Common\SymmetricKey::encrypt()
* @param string $in
* @return string
*/
protected function encryptBlock($in)
{
list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
$keys = $this->keys;
$limit = 20;
$actions = [$limit => 44, 44 => 64];
$j = 0;
for (;;) {
// Mixing round.
$r0 = (($r0 + $keys[$j++] + ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
$r0 |= $r0 >> 16;
$r1 = (($r1 + $keys[$j++] + ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
$r1 |= $r1 >> 16;
$r2 = (($r2 + $keys[$j++] + ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
$r2 |= $r2 >> 16;
$r3 = (($r3 + $keys[$j++] + ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;
if ($j === $limit) {
if ($limit === 64) {
break;
}
// Mashing round.
$r0 += $keys[$r3 & 0x3F];
$r1 += $keys[$r0 & 0x3F];
$r2 += $keys[$r1 & 0x3F];
$r3 += $keys[$r2 & 0x3F];
$limit = $actions[$limit];
}
}
return pack('vvvv', $r0, $r1, $r2, $r3);
}
/**
* Decrypts a block
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::decryptBlock()
* @see \phpseclib3\Crypt\Common\SymmetricKey::decrypt()
* @param string $in
* @return string
*/
protected function decryptBlock($in)
{
list($r0, $r1, $r2, $r3) = array_values(unpack('v*', $in));
$keys = $this->keys;
$limit = 44;
$actions = [$limit => 20, 20 => 0];
$j = 64;
for (;;) {
// R-mixing round.
$r3 = ($r3 | ($r3 << 16)) >> 5;
$r3 = ($r3 - $keys[--$j] - ((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
$r2 = ($r2 | ($r2 << 16)) >> 3;
$r2 = ($r2 - $keys[--$j] - ((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
$r1 = ($r1 | ($r1 << 16)) >> 2;
$r1 = ($r1 - $keys[--$j] - ((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
$r0 = ($r0 | ($r0 << 16)) >> 1;
$r0 = ($r0 - $keys[--$j] - ((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;
if ($j === $limit) {
if ($limit === 0) {
break;
}
// R-mashing round.
$r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
$r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
$r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
$r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;
$limit = $actions[$limit];
}
}
return pack('vvvv', $r0, $r1, $r2, $r3);
}
/**
* Creates the key schedule
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::setupKey()
*/
protected function setupKey()
{
if (!isset($this->key)) {
$this->setKey('');
}
// Key has already been expanded in \phpseclib3\Crypt\RC2::setKey():
// Only the first value must be altered.
$l = unpack('Ca/Cb/v*', $this->key);
array_unshift($l, self::$pitable[$l['a']] | ($l['b'] << 8));
unset($l['a']);
unset($l['b']);
$this->keys = $l;
}
/**
* Setup the performance-optimized function for de/encrypt()
*
* @see \phpseclib3\Crypt\Common\SymmetricKey::setupInlineCrypt()
*/
protected function setupInlineCrypt()
{
// Init code for both, encrypt and decrypt.
$init_crypt = '$keys = $this->keys;';
$keys = $this->keys;
// $in is the current 8 bytes block which has to be en/decrypt
$encrypt_block = $decrypt_block = '
$in = unpack("v4", $in);
$r0 = $in[1];
$r1 = $in[2];
$r2 = $in[3];
$r3 = $in[4];
';
// Create code for encryption.
$limit = 20;
$actions = [$limit => 44, 44 => 64];
$j = 0;
for (;;) {
// Mixing round.
$encrypt_block .= '
$r0 = (($r0 + ' . $keys[$j++] . ' +
((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF) << 1;
$r0 |= $r0 >> 16;
$r1 = (($r1 + ' . $keys[$j++] . ' +
((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF) << 2;
$r1 |= $r1 >> 16;
$r2 = (($r2 + ' . $keys[$j++] . ' +
((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF) << 3;
$r2 |= $r2 >> 16;
$r3 = (($r3 + ' . $keys[$j++] . ' +
((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF) << 5;
$r3 |= $r3 >> 16;';
if ($j === $limit) {
if ($limit === 64) {
break;
}
// Mashing round.
$encrypt_block .= '
$r0 += $keys[$r3 & 0x3F];
$r1 += $keys[$r0 & 0x3F];
$r2 += $keys[$r1 & 0x3F];
$r3 += $keys[$r2 & 0x3F];';
$limit = $actions[$limit];
}
}
$encrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
// Create code for decryption.
$limit = 44;
$actions = [$limit => 20, 20 => 0];
$j = 64;
for (;;) {
// R-mixing round.
$decrypt_block .= '
$r3 = ($r3 | ($r3 << 16)) >> 5;
$r3 = ($r3 - ' . $keys[--$j] . ' -
((($r0 ^ $r1) & $r2) ^ $r0)) & 0xFFFF;
$r2 = ($r2 | ($r2 << 16)) >> 3;
$r2 = ($r2 - ' . $keys[--$j] . ' -
((($r3 ^ $r0) & $r1) ^ $r3)) & 0xFFFF;
$r1 = ($r1 | ($r1 << 16)) >> 2;
$r1 = ($r1 - ' . $keys[--$j] . ' -
((($r2 ^ $r3) & $r0) ^ $r2)) & 0xFFFF;
$r0 = ($r0 | ($r0 << 16)) >> 1;
$r0 = ($r0 - ' . $keys[--$j] . ' -
((($r1 ^ $r2) & $r3) ^ $r1)) & 0xFFFF;';
if ($j === $limit) {
if ($limit === 0) {
break;
}
// R-mashing round.
$decrypt_block .= '
$r3 = ($r3 - $keys[$r2 & 0x3F]) & 0xFFFF;
$r2 = ($r2 - $keys[$r1 & 0x3F]) & 0xFFFF;
$r1 = ($r1 - $keys[$r0 & 0x3F]) & 0xFFFF;
$r0 = ($r0 - $keys[$r3 & 0x3F]) & 0xFFFF;';
$limit = $actions[$limit];
}
}
$decrypt_block .= '$in = pack("v4", $r0, $r1, $r2, $r3);';
// Creates the inline-crypt function
$this->inline_crypt = $this->createInlineCryptFunction(
[
'init_crypt' => $init_crypt,
'encrypt_block' => $encrypt_block,
'decrypt_block' => $decrypt_block
]
);
}
}
Kueue Pay | Contactless Payment System
top
Secure, Swift, and Smart Payments with NFCPay !
With NFC Pay, experience seamless and secure transactions right at your fingertips. Add your cards, load your wallet, and make payments effortlessly. Activate your merchant account to receive payments or transfer money instantly to other users. NFC Pay combines security, speed, and smart features, making every transaction smooth and reliable. Embrace the future of payments with NFC Pay.
Quick Steps to NFC Pay
Getting started with NFC Pay is simple and quick. Register your account, add your cards, and you're ready to make payments in no time. Whether you're paying at a store, sending money to a friend, or managing your merchant transactions, NFC Pay makes it easy and secure.
1
Register Your Account
Download the NFC Pay app and sign up with your email or phone number. Complete the registration process by verifying your identity, and set up your secure PIN to protect your account.
2
Add Your Cards
Link your debit or credit cards to your NFC Pay wallet. Simply scan your card or enter the details manually, and you’re set to load funds, shop, and pay with ease.
3
Make Payment
To pay, simply tap your phone or scan the QR code at checkout. You can also transfer money to other users with a few taps. Enjoy fast, contactless payments with top-notch security.
Advanced Security Features Designed to Protect Your Information Effectively
NFC Pay prioritizes your security with advanced features that safeguard every transaction. From SMS or email verification to end-to-end encryption, we've implemented robust measures to ensure your data is always protected. Our security systems are designed to prevent unauthorized access and provide you with a safe and reliable payment experience.
SMS or Email Verification
Receive instant alerts for every transaction to keep track of your account activities.
KYC Solution
Verify your identity through our Know Your Customer process to prevent fraud and enhance security.
Two Factor Authentication
Dramatically supply transparent backward deliverables before caward comp internal or "organic" sources.
End-to-End Encryption
All your data and transactions are encrypted, ensuring that your sensitive information remains private.
Behavior Tracking
Monitor unusual activity patterns to detect and prevent suspicious behavior in real-time.
Top Reasons to Choose Us for Reliable and Expert Solutions
With NFC Pay, you get a trusted platform backed by proven expertise and a commitment to quality. We put our customers first, offering innovative solutions tailored to your needs, ensuring every transaction is secure, swift, and seamless.
1
Proven Expertise
Our team brings years of experience in the digital payments industry to provide reliable services.
2
Commitment to Quality
We prioritize excellence, ensuring that every aspect of our platform meets the highest standards.
3
Customer-Centric Approach
Your needs drive our solutions, and we are dedicated to delivering a superior user experience.
4
Innovative Solutions
We continuously evolve, integrating the latest technologies to enhance your payment experience.
Customer Feedback: Real Experiences from Satisfied Clients and Partners
Hear from our users who trust NFC Pay for their everyday transactions. Our commitment to security, ease of use, and exceptional service shines through in their experiences. See why our clients choose NFC Pay for their payment needs and how it has transformed the way they manage their finances.
"NFC Pay has made my transactions incredibly simple and secure. The intuitive interface and quick payment options are game-changers for my business"
"I love how NFC Pay prioritizes security without compromising on convenience. The two-factor authentication and instant alerts give me peace of mind every time I use it."
"Setting up my merchant account was a breeze, and now I can accept payments effortlessly. NFC Pay has truly streamlined my operations, saving me time and hassle."
Get the NFC Pay App for Seamless Transactions Anytime, Anywhere
Unlock the full potential of NFC Pay by downloading our app, designed to bring secure, swift, and smart transactions to your fingertips. Whether you're paying at a store, transferring money to friends, or managing your business payments, the NFC Pay app makes it effortless. Available on both iOS and Android, it's your all-in-one solution for convenient and reliable digital payments. Download now and experience the future of payments!
In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy
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