[Summary view] [Print] [Text view]

   1  <?php
   2  
   3  declare(strict_types=1);
   4  
   5  /*
   6   * The MIT License (MIT)
   7   *
   8   * Copyright (c) 2014-2020 Spomky-Labs
   9   *
  10   * This software may be modified and distributed under the terms
  11   * of the MIT license.  See the LICENSE file for details.
  12   */
  13  
  14  namespace Jose\Component\Core\Util;
  15  
  16  /**
  17   * @internal
  18   */
  19  class Hash
  20  {
  21      /**
  22       * Hash Parameter.
  23       *
  24       * @var string
  25       */
  26      private $hash;
  27  
  28      /**
  29       * DER encoding T.
  30       *
  31       * @var string
  32       */
  33      private $t;
  34  
  35      /**
  36       * Hash Length.
  37       *
  38       * @var int
  39       */
  40      private $length;
  41  
  42      private function __construct(string $hash, int $length, string $t)
  43      {
  44          $this->hash = $hash;
  45          $this->length = $length;
  46          $this->t = $t;
  47      }
  48  
  49      /**
  50       * @return Hash
  51       */
  52      public static function sha1(): self
  53      {
  54          return new self('sha1', 20, "\x30\x21\x30\x09\x06\x05\x2b\x0e\x03\x02\x1a\x05\x00\x04\x14");
  55      }
  56  
  57      /**
  58       * @return Hash
  59       */
  60      public static function sha256(): self
  61      {
  62          return new self('sha256', 32, "\x30\x31\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x01\x05\x00\x04\x20");
  63      }
  64  
  65      /**
  66       * @return Hash
  67       */
  68      public static function sha384(): self
  69      {
  70          return new self('sha384', 48, "\x30\x41\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x02\x05\x00\x04\x30");
  71      }
  72  
  73      /**
  74       * @return Hash
  75       */
  76      public static function sha512(): self
  77      {
  78          return new self('sha512', 64, "\x30\x51\x30\x0d\x06\x09\x60\x86\x48\x01\x65\x03\x04\x02\x03\x05\x00\x04\x40");
  79      }
  80  
  81      public function getLength(): int
  82      {
  83          return $this->length;
  84      }
  85  
  86      /**
  87       * Compute the HMAC.
  88       */
  89      public function hash(string $text): string
  90      {
  91          return hash($this->hash, $text, true);
  92      }
  93  
  94      public function name(): string
  95      {
  96          return $this->hash;
  97      }
  98  
  99      public function t(): string
 100      {
 101          return $this->t;
 102      }
 103  }