diff --git a/lib/oauth.js b/lib/oauth.js
index 7150d3f..f6ac0bd 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -367,3 +367,12 @@ exports.OAuth.prototype.signUrl= function(url, oauth_token, oauth_token_secret,
  
   return parsedUrl.protocol + "//"+ parsedUrl.host + parsedUrl.pathname + "?" + query;
 };
+
+exports.OAuth.prototype.authHeader= function(url, oauth_token, oauth_token_secret, method) {
+  if( method === undefined ) {
+    var method= "GET";
+  }
+
+  var orderedParameters= this._prepareParameters(oauth_token, oauth_token_secret, method, url, {});
+  return this._buildAuthorizationHeaders(orderedParameters);
+};