C# (CSharp) RsaUtils.RsaPkcs15Sha1_Sign Examples

Example #1

        public async Task <OAuth2AccessToken> RequestTokenWithWithSiteTokenAsync(OAuth2Credential credential, X509Certificate2 certificate, string accessToken, string resourceId, string scope)
        {
            if (credential == null)
            {
                throw new ArgumentNullException("credential");
            }

            if (certificate == null)
            {
                throw new ArgumentNullException("certificate");
            }

            Dictionary <string, string> fields = new Dictionary <string, string>();

            var clientId = certificate.GetRawCertData();

            var random = new RNGCryptoServiceProvider();
            var nonce  = new byte[32];

            random.GetBytes(nonce);

            var dataToSign = Utils.Append(new UTF8Encoding(false).GetBytes(accessToken), nonce);
            var signature  = RsaUtils.RsaPkcs15Sha1_Sign(new ArraySegment <byte>(dataToSign), certificate);

            fields["grant_type"]    = "urn:opcfoundation.org:oauth2:site_token";
            fields["client_id"]     = Convert.ToBase64String(clientId);
            fields["client_secret"] = Convert.ToBase64String(signature);
            fields["nonce"]         = Convert.ToBase64String(nonce);
            fields["access_token"]  = accessToken;

            if (!String.IsNullOrEmpty(credential.RedirectUrl))
            {
                fields["redirect_uri"] = credential.RedirectUrl;
            }

            if (!String.IsNullOrEmpty(resourceId))
            {
                fields["resource"] = resourceId;
            }

            if (!String.IsNullOrEmpty(scope))
            {
                fields["scope"] = scope;
            }

            var url = new UriBuilder(credential.AuthorityUrl);

            url.Path += credential.TokenEndpoint;
            return(await RequestTokenAsync(url.Uri, fields));
        }