Example #1
0
 function testRandom()
 {
     for ($i = 1; $i < 128; $i += 4) {
         $data = Crypto::random($i);
         $this->assertNotEqual($data, '', 'Empty random data generated');
         $this->assert(strlen($data) == $i, 'Random data received was not the length requested');
     }
 }
Example #2
0
 function getToken()
 {
     if (!$this->csrf['token'] || $this->isExpired()) {
         $this->csrf['token'] = sha1(session_id() . Crypto::random(16) . SECRET_SALT);
         $this->csrf['time'] = time();
     } else {
         //Reset the timer
         $this->csrf['time'] = time();
     }
     return $this->csrf['token'];
 }
Example #3
0
 function randCode($len = 8, $chars = false)
 {
     $chars = $chars ?: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_=';
     // Determine the number of bits we need
     $char_count = strlen($chars);
     $bits_per_char = ceil(log($char_count, 2));
     $bytes = ceil(4 * $len / floor(32 / $bits_per_char));
     // Pad to 4 byte boundary
     $bytes += (4 - $bytes % 4) % 4;
     // Fetch some random data blocks
     $data = Crypto::random($bytes);
     $mask = (1 << $bits_per_char) - 1;
     $loops = (int) (32 / $bits_per_char);
     $output = '';
     $ints = unpack('V*', $data);
     foreach ($ints as $int) {
         for ($i = $loops; $i > 0; $i--) {
             $output .= $chars[($int & $mask) % $char_count];
             $int >>= $bits_per_char;
         }
     }
     return substr($output, 0, $len);
 }
Example #4
0
 function rotate()
 {
     $this->csrf['token'] = sha1(session_id() . Crypto::random(16) . SECRET_SALT);
     $this->csrf['time'] = time();
 }
Example #5
0
 function encrypt($text, $cid = 0)
 {
     if (!$this->exists() || !$text || !($cipher = $this->getCipher($cid)) || !($crypto = $this->getCrypto($cipher['cid']))) {
         return false;
     }
     $ivlen = $cipher['ivlen'];
     $iv = Crypto::random($ivlen);
     $crypto->setKey($this->getKeyHash($iv, $ivlen));
     $crypto->setIV($iv);
     return sprintf('$%s$%s%s', $cipher['cid'], $iv, $crypto->encrypt($text));
 }