Version 4.7.0

system/3rd_party/JwtFramework/src/Component/Signature/Algorithm/HMAC.php

@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 Spomky-Labs
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace Jose\Component\Signature\Algorithm;
+
+use Base64Url\Base64Url;
+use InvalidArgumentException;
+use Jose\Component\Core\JWK;
+
+abstract class HMAC implements MacAlgorithm
+{
+    public function allowedKeyTypes(): array
+    {
+        return ['oct'];
+    }
+
+    public function verify(JWK $key, string $input, string $signature): bool
+    {
+        return hash_equals($this->hash($key, $input), $signature);
+    }
+
+    public function hash(JWK $key, string $input): string
+    {
+        $k = $this->getKey($key);
+
+        return hash_hmac($this->getHashAlgorithm(), $input, $k, true);
+    }
+
+    protected function getKey(JWK $key): string
+    {
+        if (!\in_array($key->get('kty'), $this->allowedKeyTypes(), true)) {
+            throw new InvalidArgumentException('Wrong key type.');
+        }
+        if (!$key->has('k')) {
+            throw new InvalidArgumentException('The key parameter "k" is missing.');
+        }
+        $k = $key->get('k');
+        if (!\is_string($k)) {
+            throw new InvalidArgumentException('The key parameter "k" is invalid.');
+        }
+
+        return Base64Url::decode($k);
+    }
+
+    abstract protected function getHashAlgorithm(): string;
+}

system/3rd_party/JwtFramework/src/Component/Signature/Algorithm/HS256.php

@@ -0,0 +1,40 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2019 Spomky-Labs
+ *
+ * This software may be modified and distributed under the terms
+ * of the MIT license.  See the LICENSE file for details.
+ */
+
+namespace Jose\Component\Signature\Algorithm;
+
+use InvalidArgumentException;
+use Jose\Component\Core\JWK;
+
+final class HS256 extends HMAC
+{
+    public function name(): string
+    {
+        return 'HS256';
+    }
+
+    protected function getHashAlgorithm(): string
+    {
+        return 'sha256';
+    }
+
+    protected function getKey(JWK $key): string
+    {
+        $k = parent::getKey($key);
+        if (mb_strlen($k, '8bit') < 32) {
+            throw new InvalidArgumentException('Invalid key length.');
+        }
+
+        return $k;
+    }
+}