Twitter auth for search tweets in twitter api 1.1


as given in example in twitter docs here

I am making following request

With auth header OAuth oauth_consumer_key=“xeWHQv6Q",oauth_signature_method=“HMAC-SHA1”,oauth_timestamp=“1393318029”,oauth_nonce="5D2*17A”,oauth_version=“1.0”,oauth_token=“1588296732-v******BeT8sIj",oauth_signature="nxg5Lxp217U%3D”

But i get the resposne :

{“errors”:[{“message”:“Could not authenticate you”,“code”:32}]}

how to resolve the problem? I have searched on google but i am jumbled up totally. Most of them telling to use some plugin. I do NOT want to use any plugin. i am looking for the reason behind the problem. and some exact solution with modifying the request. I am actually using oAuth 1 on restconsole.