Пример #1
0
 /**
  * Parses an object identifier except for the first octet, which is parsed
  * differently. This way relative object identifiers can also be parsed
  * using this.
  *
  * @param $binaryData
  * @param $offsetIndex
  * @param $octetsToRead
  *
  * @throws ParserException
  *
  * @return string
  */
 protected static function parseOid(&$binaryData, &$offsetIndex, $octetsToRead)
 {
     $oid = '';
     while ($octetsToRead > 0) {
         $octets = '';
         do {
             if (0 === $octetsToRead) {
                 throw new ParserException('Malformed ASN.1 Object Identifier', $offsetIndex - 1);
             }
             $octetsToRead--;
             $octet = $binaryData[$offsetIndex++];
             $octets .= $octet;
         } while (ord($octet) & 0x80);
         $oid .= sprintf('%d.', Base128::decode($octets));
     }
     // Remove trailing '.'
     return substr($oid, 0, -1) ?: '';
 }
Пример #2
0
 /**
  * @param int|string $identifier
  *
  * @return int
  */
 public static function getTagNumber($identifier)
 {
     $firstOctet = self::makeNumeric($identifier);
     $tagNumber = $firstOctet & self::LONG_FORM;
     if ($tagNumber < self::LONG_FORM) {
         return $tagNumber;
     }
     if (is_numeric($identifier)) {
         $identifier = chr($identifier);
     }
     return Base128::decode(substr($identifier, 1));
 }
Пример #3
0
 /**
  * @param int|string $identifier
  *
  * @return int
  */
 public static function getTagNumber($identifier)
 {
     $firstOctet = substr($identifier, 0, 1);
     if (!IdentifierManager::isLongForm($firstOctet)) {
         return ord($firstOctet) & self::LONG_FORM;
     }
     $firstOctet = self::makeNumeric($identifier);
     if (is_numeric($identifier)) {
         $identifier = chr($identifier);
     }
     return Base128::decode(substr($identifier, 1));
 }