Fix RSA key (#36)

Author: Spomky

src/Key/RsaKey.php

@@ -8,6 +8,7 @@
 use Brick\Math\BigInteger;
 use function in_array;
 use InvalidArgumentException;
+use SpomkyLabs\Pki\CryptoTypes\Asymmetric\PublicKeyInfo;
 use SpomkyLabs\Pki\CryptoTypes\Asymmetric\RSA\RSAPrivateKey;
 use SpomkyLabs\Pki\CryptoTypes\Asymmetric\RSA\RSAPublicKey;
 
@@ -208,8 +209,9 @@ public function asPem(): string
             $this->binaryToBigInteger($this->n()),
             $this->binaryToBigInteger($this->e())
         );
+        $rsaKey = PublicKeyInfo::fromPublicKey($publicKey);
 
-        return $publicKey->toPEM()
+        return $rsaKey->toPEM()
             ->string();
     }
 

tests/Key/RSA-Public.pem

@@ -0,0 +1,9 @@
+-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAsWCJwDvzAQ2ssuX7GIQJ
+n5VO4cOGi4MJe6A0mzwA+/YdZlCw5tJaOZcSeLiFunECdJtuI9ldcQasF8ZsGqLS
+r98O25WdGHiD3R+z4v0KW8pkJaDVAL2hZSkFlyUJ2y6Vfvndpe0oe2aCsIXdEmHS
+O0k4da4bGWNCBNWGuzCV9Uf++t3rzLBi9kOtnSrlTfEpnxArWuhySQwJDeQLhBKd
+mugULQugVfTnpISK23Wq3hkOfz7XyLmAgLIRhE4rwsiDtC0cYRA7r9iip3Vc8h2x
+AV5y0+1g4+uN5KFV4zDxqBy98V43h5sZJ6UBcJH36t6ysdD5ux92SrpPeazcSTCq
+EwIDAQAB
+-----END PUBLIC KEY-----

tests/Key/RSAKeyTest.php

@@ -0,0 +1,37 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Cose\Tests\Key;
+
+use Cose\Algorithm\Signature\RSA\RS256;
+use Cose\Key\RsaKey;
+use PHPUnit\Framework\TestCase;
+
+final class RSAKeyTest extends TestCase
+{
+    /**
+     * @test
+     */
+    public function theKeyIsCorrectlyEncoded(): void
+    {
+        // Given
+        $key = RsaKey::create([
+            RsaKey::TYPE => RsaKey::TYPE_RSA,
+            RsaKey::ALG => RS256::ID,
+            RsaKey::DATA_N => base64_decode(
+                'sWCJwDvzAQ2ssuX7GIQJn5VO4cOGi4MJe6A0mzwA+/YdZlCw5tJaOZcSeLiFunECdJtuI9ldcQasF8ZsGqLSr98O25WdGHiD3R+z4v0KW8pkJaDVAL2hZSkFlyUJ2y6Vfvndpe0oe2aCsIXdEmHSO0k4da4bGWNCBNWGuzCV9Uf++t3rzLBi9kOtnSrlTfEpnxArWuhySQwJDeQLhBKdmugULQugVfTnpISK23Wq3hkOfz7XyLmAgLIRhE4rwsiDtC0cYRA7r9iip3Vc8h2xAV5y0+1g4+uN5KFV4zDxqBy98V43h5sZJ6UBcJH36t6ysdD5ux92SrpPeazcSTCqEw',
+                true
+            ),
+            RsaKey::DATA_E => base64_decode('AQAB', true),
+        ]);
+        $expected = trim(file_get_contents(__DIR__ . '/RSA-Public.pem'));
+
+        // When
+        $pem = $key->toPublic()
+            ->asPem();
+
+        // Then
+        static::assertSame($expected, $pem);
+    }
+}