magento REST API not accessible in iphone - iphone

Question

When I try to access rest API using iPhone I have passed following parameter in URL and used both methods POST and GET but it displays Access Denied.
oauth_version="1.0",
oauth_signature_method="HMAC-SHA1",
oauth_nonce="B0dlzkfMWCAn0TJ",
oauth_timestamp="1366280813",
oauth_consumer_key="klkjylsiozbv6vfdsqtuheqo3kmqqzv2",
oauth_token="t9pefrwylmg7webyepsqepotlhzbytkp",
oauth_signature="NeOwbCLUPbIyF9ErnHoFQOl9%2Bwo%3D"
I have worked with REST Client plugin available for Firefox and Chrome, REST API is work well using REST Client plugin but not accessible in iPhone.
I am generating a random value for oauth_timestamp, oauth_signature and oauth_nonce then also REST API is displaying Access Denied.
Please provide suggestions.

Answer 1

//here final_sign is signature generated from following procedure.
$nonce = substr(md5(uniqid('nonce_', true)),0,16);
$temprealm="http://magentohost/api/rest/products";
$realm=urlencode($temprealm);
$oauth_version="1.0";
$oauth_signature_method="HMAC-SHA1";
$oauth_consumer_key="dfddfgdgdfgddf6qgygmyvw7e3";
$oauth_access_token="fdgdfgfdgdfg357gimpdnuejvcbtk51ni";
$oauth_method="GET";
$oauth_timestamp=time();
$algo="sha1";
$key="sb88hfdihyg25ipt1by559yzbj2m3861&s7uhaheu8nrx961oxg6uc3os4zgyc2tm"; //consumer secret & token secret //Both are used in generate signature
$data="oauth_consumer_key=".$oauth_consumer_key."&oauth_nonce=".$nonce."&oauth_signature_method=".$oauth_signature_method."&oauth_timestamp=".$oauth_timestamp."&oauth_token=".$oauth_access_token."&oauth_version=".$oauth_version;
$send_data=$oauth_method."&".$realm."&".urlencode($data);
$sign=hash_hmac($algo,$send_data,$key,1); // consumer key and token secrat used here
$fin_sign=base64_encode($sign);
echo $fin_sign;

Answer 2

From your question I understand that you use a random value for the signature and the nonce.
The latter would be fine, but a random signature would lead the receiver not to trust you as a legitimate client.
So, actually, you get the response you requested (;-)). But that does not solve your problem.
You have to generate a valid signature for the magento system.