Revert "Remove extra \0 byte if present (#476)" (#477)

This reverts commit 4ab8741.

src/Component/Core/Util/ECKey.php

@@ -317,12 +317,9 @@ private static function getKey(JWK $jwk): string
         if (! is_string($y)) {
             throw new InvalidArgumentException('Unable to get the public key');
         }
-        $binX = ltrim(Base64UrlSafe::decode($x), "\0");
-        $binY = ltrim(Base64UrlSafe::decode($y), "\0");
 
         return "\04"
-            . str_pad($binX, $length, "\0", STR_PAD_LEFT)
-            . str_pad($binY, $length, "\0", STR_PAD_LEFT)
-        ;
+            . str_pad(Base64UrlSafe::decode($x), $length, "\0", STR_PAD_LEFT)
+            . str_pad(Base64UrlSafe::decode($y), $length, "\0", STR_PAD_LEFT);
     }
 }

tests/Component/Core/JWKTest.php

@@ -6,7 +6,6 @@
 
 use InvalidArgumentException;
 use Jose\Component\Core\JWK;
-use Jose\Component\Core\Util\ECKey;
 use const JSON_THROW_ON_ERROR;
 use PHPUnit\Framework\Attributes\Test;
 use PHPUnit\Framework\TestCase;
@@ -128,28 +127,4 @@ public function iCanConvertAPrivateKeyIntoPublicKey(): void
             'kid' => '9876543210',
         ]), json_encode($public, JSON_THROW_ON_ERROR));
     }
-
-    /**
-     * @test
-     * @see https://github.com/web-token/jwt-framework/issues/475
-     */
-    public static function convertToPEM(): void
-    {
-        // Given
-        $key = '{"kty":"EC","crv":"P-256","x":"GDDdmNtwNvlXN04SEUp20BZJ9im6SQqkP8u4d8G6RAk","y":"AIAxkBwTTqbCcNbqbpk8l_Eh-4KtpgyyHkNJ6K4jnvOv","use":"sig","alg":"ES256","kid":"ayRrlw","key_ops":["verify"]}';
-        $jwk = JWK::createFromJson($key);
-        $expectedPEM = <<<'PEM'
------BEGIN PUBLIC KEY-----
-MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEGDDdmNtwNvlXN04SEUp20BZJ9im6
-SQqkP8u4d8G6RAmAMZAcE06mwnDW6m6ZPJfxIfuCraYMsh5DSeiuI57zrw==
------END PUBLIC KEY-----
-
-PEM;
-
-        //When
-        $pem = ECKey::convertToPEM($jwk);
-
-        //Then
-        static::assertSame($expectedPEM, $pem);
-    }
 }