public void TestOAuth()
{
X509Certificate2 cert = new X509Certificate2(ConfigurationSettings.AppSettings["OAuthCert"]);
AsymmetricAlgorithm provider = cert.PublicKey.Key;
OAuthContextSigner signer = new OAuthContextSigner();
SigningContext signingContext = new SigningContext();
//signingContext.ConsumerSecret = ...; // if there is a consumer secret
signingContext.Algorithm = provider;
Uri uri = new Uri(
"http://dev-profiles.campus.net.ucsf.edu/chatter/ChatterProxyService.svc/user/5138614/unfollow/4621800?accessToken=00DZ0000000jhLQ!ARIAQAlqX_qtYj95uzEftkMIKQggfo.RoJ3KnvvakO97Xrjptfq89vTtwGFgR1jnyeNSm1CwnLSSz0N3g8.bQrX.jCpJ6Np3&oauth_body_hash=2jmj7l5rSw0yVb/vlWAYkK/YBwk=&opensocial_owner_id=4621800&opensocial_viewer_id=5138614&opensocial_app_id=http://dev-profiles.ucsf.edu/ORNG/ChatterFollow.xml&opensocial_app_url=http://dev-profiles.ucsf.edu/ORNG/ChatterFollow.xml&oauth_consumer_key=&xoauth_signature_publickey=mytestkey&xoauth_public_key=mytestkey&oauth_version=1.0&oauth_timestamp=1349466703&oauth_nonce=7533897618501371565&oauth_consumer_key=&oauth_signature_method=RSA-SHA1&oauth_signature=d0UIIXK+HwbkLD4VE59ylZ9XoBreMBqc0Kcf4v2DjzWT0AE1JtCUhDmS1Uy1P9K54tpeoQwjcu8mnWsA7PQpTRTYyU1k+ueT4M2ihoaB+CunpZz6Q3KE8MUZn4Sy0D7iNuje6WdgHZ80f9Ln8OwRPzrfHA5v0KowATRv7T2h+x0="
);
IOAuthContext context = new OAuthContextBuilder().FromUri("GET", uri);
// use context.ConsumerKey to fetch information required for signature validation for this consumer.
if (!signer.ValidateSignature(context, signingContext))
{
throw new Exception("Invalid signature : " + uri);
}
}