Add toPasetoKey methods to PASERK keys

paragonie · Apr 30, 2022 · 33a2269 · 33a2269
1 parent 4fba245
commit 33a2269
Show file tree

Hide file tree

Showing 2 changed files with 33 additions and 0 deletions.
diff --git a/src/Operations/Key/SealingPublicKey.php b/src/Operations/Key/SealingPublicKey.php
@@ -2,13 +2,29 @@
 declare(strict_types=1);
 namespace ParagonIE\Paserk\Operations\Key;
 
+use ParagonIE\Paserk\PaserkException;
 use ParagonIE\Paseto\Keys\AsymmetricPublicKey;
+use ParagonIE\Paseto\Protocol\Version1;
 
 /**
  * Class SealingPublicKey
  * @package ParagonIE\Paserk\Operations\Key
  */
 class SealingPublicKey extends AsymmetricPublicKey
 {
+    /**
+     * @return AsymmetricPublicKey
+     * @throws PaserkException
+     */
+    public function toPasetoKey(): AsymmetricPublicKey
+    {
+        if ($this->protocol instanceof Version1) {
+            throw new PaserkException("Version 1 keys cannot be converted!");
+        }
 
+        return new AsymmetricPublicKey(
+            $this->key,
+            $this->protocol
+        );
+    }
 }
diff --git a/src/Operations/Key/SealingSecretKey.php b/src/Operations/Key/SealingSecretKey.php
@@ -2,6 +2,7 @@
 declare(strict_types=1);
 namespace ParagonIE\Paserk\Operations\Key;
 
+use ParagonIE\Paserk\PaserkException;
 use ParagonIE\EasyECC\ECDSA\{
     PublicKey,
     SecretKey
@@ -66,6 +67,22 @@ public static function generate(ProtocolInterface $protocol = null): AsymmetricS
         );
     }
 
+    /**
+     * @return AsymmetricSecretKey
+     * @throws PaserkException
+     */
+    public function toPasetoKey(): AsymmetricSecretKey
+    {
+        if ($this->protocol instanceof Version1) {
+            throw new PaserkException("Version 1 keys cannot be converted!");
+        }
+
+        return new AsymmetricSecretKey(
+            $this->key,
+            $this->protocol
+        );
+    }
+
     /**
      * @return AsymmetricPublicKey
      *