Also accept an RSA key with crlf

.gitattributes

@@ -10,4 +10,6 @@
 /phpunit.xml.dist export-ignore
 /CHANGELOG.md export-ignore
 /CONTRIBUTING.md export-ignore
-/README.md export-ignore
+/README.md export-ignore
+
++*.crlf eol=crlf

src/CryptKey.php

@@ -14,7 +14,7 @@ namespace League\OAuth2\Server;
 class CryptKey
 {
     const RSA_KEY_PATTERN =
-        '/^(-----BEGIN (RSA )?(PUBLIC|PRIVATE) KEY-----\n)(.|\n)+(-----END (RSA )?(PUBLIC|PRIVATE) KEY-----)$/';
+        '/^(-----BEGIN (RSA )?(PUBLIC|PRIVATE) KEY-----)(.|\n|\r)+(-----END (RSA )?(PUBLIC|PRIVATE) KEY-----)$/';
 
     /**
      * @var string

tests/CryptKeyTest.php

@@ -21,6 +21,12 @@ class CryptKeyTest extends \PHPUnit_Framework_TestCase
 
         $this->assertEquals('file://' . $keyFile, $key->getKeyPath());
         $this->assertEquals('secret', $key->getPassPhrase());
+
+        $keyFile = __DIR__ . '/Stubs/public.key.crlf';
+        $key = new CryptKey($keyFile, 'secret');
+
+        $this->assertEquals('file://' . $keyFile, $key->getKeyPath());
+        $this->assertEquals('secret', $key->getPassPhrase());
     }
 
     public function testKeyFileCreation()

tests/Stubs/public.key.crlf

@@ -0,0 +1,6 @@
+-----BEGIN PUBLIC KEY-----
+MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDOBcFjGUlo3BJ9zjwQLgAHn6Oy
+5Si0uB7MublTiPob8rWTiCE4weAFqzPoAB07vB0t0f8c1R8rmwHMD5ljWPBgJ8Fe
+wtwAUzprOBcau6DWukd/TKxXWeVLAl/NZxijI+jR5QDBYLNBtj1G4LBVHMmINd3r
+yCycbf9ac3rcC8zhrQIDAQAB
+-----END PUBLIC KEY-----