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/wp-includes/sodium_compat/src/Core/ -> Poly1305.php (source)

   1  <?php
   2  
   3  if (class_exists('ParagonIE_Sodium_Core_Poly1305', false)) {
   4      return;
   5  }
   6  
   7  /**
   8   * Class ParagonIE_Sodium_Core_Poly1305
   9   */
  10  abstract class ParagonIE_Sodium_Core_Poly1305 extends ParagonIE_Sodium_Core_Util
  11  {
  12      const BLOCK_SIZE = 16;
  13  
  14      /**
  15       * @internal You should not use this directly from another application
  16       *
  17       * @param string $m
  18       * @param string $key
  19       * @return string
  20       * @throws SodiumException
  21       * @throws TypeError
  22       */
  23      public static function onetimeauth($m, $key)
  24      {
  25          if (self::strlen($key) < 32) {
  26              throw new InvalidArgumentException(
  27                  'Key must be 32 bytes long.'
  28              );
  29          }
  30          $state = new ParagonIE_Sodium_Core_Poly1305_State(
  31              self::substr($key, 0, 32)
  32          );
  33          return $state
  34              ->update($m)
  35              ->finish();
  36      }
  37  
  38      /**
  39       * @internal You should not use this directly from another application
  40       *
  41       * @param string $mac
  42       * @param string $m
  43       * @param string $key
  44       * @return bool
  45       * @throws SodiumException
  46       * @throws TypeError
  47       */
  48      public static function onetimeauth_verify($mac, $m, $key)
  49      {
  50          if (self::strlen($key) < 32) {
  51              throw new InvalidArgumentException(
  52                  'Key must be 32 bytes long.'
  53              );
  54          }
  55          $state = new ParagonIE_Sodium_Core_Poly1305_State(
  56              self::substr($key, 0, 32)
  57          );
  58          $calc = $state
  59              ->update($m)
  60              ->finish();
  61          return self::verify_16($calc, $mac);
  62      }
  63  }


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