cleaned up composer

vendor/web-token/jwt-library/Encryption/Algorithm/ContentEncryption/AESGCM.php

@@ -0,0 +1,80 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jose\Component\Encryption\Algorithm\ContentEncryption;
+
+use Jose\Component\Core\Util\Base64UrlSafe;
+use Jose\Component\Encryption\Algorithm\ContentEncryptionAlgorithm;
+use Override;
+use RuntimeException;
+use function extension_loaded;
+use const OPENSSL_RAW_DATA;
+
+abstract readonly class AESGCM implements ContentEncryptionAlgorithm
+{
+    public function __construct()
+    {
+        if (! extension_loaded('openssl')) {
+            throw new RuntimeException('Please install the OpenSSL extension');
+        }
+    }
+
+    #[Override]
+    public function allowedKeyTypes(): array
+    {
+        return []; //Irrelevant
+    }
+
+    #[Override]
+    public function encryptContent(
+        string $data,
+        string $cek,
+        string $iv,
+        ?string $aad,
+        string $encoded_protected_header,
+        ?string &$tag = null
+    ): string {
+        $calculated_aad = $encoded_protected_header;
+        if ($aad !== null) {
+            $calculated_aad .= '.' . Base64UrlSafe::encodeUnpadded($aad);
+        }
+        $tag = '';
+        $result = openssl_encrypt($data, $this->getMode(), $cek, OPENSSL_RAW_DATA, $iv, $tag, $calculated_aad);
+        if ($result === false) {
+            throw new RuntimeException('Unable to encrypt the content');
+        }
+
+        return $result;
+    }
+
+    #[Override]
+    public function decryptContent(
+        string $data,
+        string $cek,
+        string $iv,
+        ?string $aad,
+        string $encoded_protected_header,
+        string $tag
+    ): string {
+        $calculated_aad = $encoded_protected_header;
+        if ($aad !== null) {
+            $calculated_aad .= '.' . Base64UrlSafe::encodeUnpadded($aad);
+        }
+
+        $result = openssl_decrypt($data, $this->getMode(), $cek, OPENSSL_RAW_DATA, $iv, $tag, $calculated_aad);
+        if ($result === false) {
+            throw new RuntimeException('Unable to decrypt the content');
+        }
+
+        return $result;
+    }
+
+    #[Override]
+    public function getIVSize(): int
+    {
+        return 96;
+    }
+
+    abstract protected function getMode(): string;
+}