Re-adding phpseclib for better reliability

Author: snelg

composer.json

@@ -4,7 +4,8 @@
     "license": "MIT",
     "require": {
         "firebase/php-jwt": "~4.0",
-        "guzzlehttp/guzzle": "~5.3"
+        "guzzlehttp/guzzle": "~5.3",
+        "phpseclib/phpseclib": "~2.0.4"
     },
     "require-dev": {
         "phpunit/phpunit": "~5.0"

composer.lock

@@ -20,6 +20,7 @@
 use Firebase\JWT\JWT;
 use GuzzleHttp\Client;
 use GuzzleHttp\Exception\RequestException;
+use phpseclib\File\X509;
 
 /**
  * Provides helpful functions to retrieve a specified BYU
@@ -112,15 +113,12 @@ public function getPublicKey()
             return null;
         }
 
-        $keyResource = openssl_pkey_get_public(
-            "-----BEGIN CERTIFICATE-----\n"
-            . $jwks->keys[0]->x5c[0]
-            . "\n-----END CERTIFICATE-----"
-        );
-        if (!$keyResource) {
+        $X509 = new X509();
+        if (!$X509->loadX509($jwks->keys[0]->x5c[0])) {
             return null;
         }
-        $key = openssl_pkey_get_details($keyResource)['key'];
+
+        $key = (string)$X509->getPublicKey();
 
         $this->setCache('publicKey', $key);
 

src/BYUJWT.php

@@ -292,7 +292,7 @@ public function testParsedClaims()
     public function testRealWellKnown()
     {
         //one "live" test to https://api.byu.edu
-        $this->assertNotEmpty((new BYUJWT)->getWellKnown());
+        $this->assertNotEmpty((new BYUJWT)->getPublicKey());
     }
 
     protected function mockClient($responseTexts = [])