Verifying null fix.

Author: Marwan Hilmi

index.js

@@ -35,6 +35,9 @@ module.exports.verify = function(jwtString, secretOrPublicKey, options, callback
   if ((typeof options === 'function') && !callback) callback = options;
   if (!options) options = {};
 
+  if (!jwtString)
+  	return callback(new JsonWebTokenError('jwt must be provided'));
+
   var parts = jwtString.split('.');
   if (parts.length !== 3)
     return callback(new JsonWebTokenError('jwt malformed'));

test/jwt.hs.tests.js

@@ -41,5 +41,13 @@ describe('HS256', function() {
       });
     });
 
+    it('should throw when verifying null', function(done) {
+      jwt.verify(null, 'secret', function(err, decoded) {
+        assert.isUndefined(decoded);
+        assert.isNotNull(err);
+        done();
+      });
+    });
+
   });
 });