public SecurityToken GetToken (TimeSpan timeout) { WstRequestSecurityToken req = new WstRequestSecurityToken (); BodyWriter body = new WstRequestSecurityTokenWriter (req, SecurityTokenSerializer); Message msg = Message.CreateMessage (IssuerBinding.MessageVersion, Constants.WstIssueAction, body); Message res = comm.Issue (msg); // FIXME: provide SecurityTokenResolver (but from where?) using (WSTrustRequestSecurityTokenResponseReader resreader = new WSTrustRequestSecurityTokenResponseReader (null, res.GetReaderAtBodyContents (), SecurityTokenSerializer, null)) { WstRequestSecurityTokenResponse rstr = resreader.Read (); if (rstr.RequestedSecurityToken != null) return rstr.RequestedSecurityToken; throw new NotImplementedException ("IssuedSecurityTokenProvider did not see RequestedSecurityToken in the response."); } }
public void Read(string negotiationType, XmlDictionaryReader r, SecurityTokenSerializer serializer, SecurityTokenResolver resolver) { r.MoveToContent(); r.ReadStartElement("RequestSecurityTokenResponseCollection", Constants.WstNamespace); while (true) { r.MoveToContent(); if (r.NodeType != XmlNodeType.Element) { break; } WSTrustRequestSecurityTokenResponseReader rstrr = new WSTrustRequestSecurityTokenResponseReader(negotiationType, r, serializer, resolver); rstrr.Read(); responses.Add(rstrr.Value); } r.ReadEndElement(); }
Message ProcessClientKeyExchange (Message request) { // FIXME: use correct buffer size MessageBuffer buffer = request.CreateBufferedCopy (0x10000); WSTrustRequestSecurityTokenResponseReader reader = new WSTrustRequestSecurityTokenResponseReader (Constants.WstTlsnegoProofTokenType, buffer.CreateMessage ().GetReaderAtBodyContents (), SecurityTokenSerializer, null); reader.Read (); TlsServerSessionInfo tlsInfo; if (!sessions.TryGetValue (reader.Value.Context, out tlsInfo)) throw new SecurityNegotiationException (String.Format ("The context '{0}' does not exist in this SSL negotiation manager", reader.Value.Context)); TlsServerSession tls = tlsInfo.Tls; AppendNegotiationMessageXml (buffer.CreateMessage ().GetReaderAtBodyContents (), tlsInfo); //Console.WriteLine (System.Text.Encoding.UTF8.GetString (tlsInfo.Messages.ToArray ())); tls.ProcessClientKeyExchange (reader.Value.BinaryExchange.Value); byte [] serverFinished = tls.ProcessServerFinished (); // The shared key is computed as recommended in WS-Trust: // P_SHA1(encrypted_key,SHA1(exc14n(RST..RSTRs))+"CK-HASH") byte [] hash = SHA1.Create ().ComputeHash (tlsInfo.Messages.ToArray ()); byte [] key = tls.CreateHash (tls.MasterSecret, hash, "CK-HASH"); byte [] keyTlsApplied = tls.ProcessApplicationData (key); foreach (byte b in hash) Console.Write ("{0:X02} ", b); Console.WriteLine (); foreach (byte b in key) Console.Write ("{0:X02} ", b); Console.WriteLine (); WstRequestSecurityTokenResponseCollection col = new WstRequestSecurityTokenResponseCollection (); WstRequestSecurityTokenResponse rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.TokenType = Constants.WsscContextToken; DateTime from = DateTime.Now; // FIXME: not sure if arbitrary key is used here. SecurityContextSecurityToken sct = SecurityContextSecurityToken.CreateCookieSecurityContextToken ( // Create a new context. // (do not use sslnego context here.) new UniqueId (), "uuid-" + Guid.NewGuid (), key, from, // FIXME: use LocalServiceSecuritySettings.NegotiationTimeout from.AddHours (8), null, owner.Manager.ServiceCredentials.SecureConversationAuthentication.SecurityStateEncoder); rstr.RequestedSecurityToken = sct; // without this ProcessApplicationData(), .NET seems // to fail recovering the key. rstr.RequestedProofToken = keyTlsApplied; rstr.RequestedAttachedReference = new LocalIdKeyIdentifierClause (sct.Id); rstr.RequestedUnattachedReference = new SecurityContextKeyIdentifierClause (sct.ContextId, null); WstLifetime lt = new WstLifetime (); lt.Created = from; lt.Expires = from.Add (SecurityBindingElement.LocalServiceSettings.IssuedCookieLifetime); rstr.Lifetime = lt; rstr.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueTls); rstr.BinaryExchange.Value = serverFinished; col.Responses.Add (rstr); // Authenticator is mandatory for MS sslnego. rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.Authenticator = tls.CreateHash (key, hash, "AUTH-HASH"); col.Responses.Add (rstr); sessions.Remove (reader.Value.Context); // FIXME: get correct tokenRequestor address (probably identity authorized?) if (owner.IssuedSecurityTokenHandler != null) owner.IssuedSecurityTokenHandler (sct, request.Headers.ReplyTo); return Message.CreateMessage (request.Version, Constants.WstIssueReplyAction, col); }
public SecurityToken GetToken (TimeSpan timeout) { bool gss = (TargetAddress.Identity == null); SspiClientSession sspi = new SspiClientSession (); WstRequestSecurityToken rst = new WstRequestSecurityToken (); // send MessageType1 rst.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueGss); // When the TargetAddress does not contain the endpoint // identity, then .net seems to use Kerberos instead of // raw NTLM. if (gss) rst.BinaryExchange.Value = sspi.ProcessSpnegoInitialContextTokenRequest (); else rst.BinaryExchange.Value = sspi.ProcessMessageType1 (); Message request = Message.CreateMessage (IssuerBinding.MessageVersion, Constants.WstIssueAction, rst); request.Headers.MessageId = new UniqueId (); request.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri); request.Headers.To = TargetAddress.Uri; MessageBuffer buffer = request.CreateBufferedCopy (0x10000); // tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); // receive MessageType2 Message response = proxy.Issue (buffer.CreateMessage ()); buffer = response.CreateBufferedCopy (0x10000); // tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); WSTrustRequestSecurityTokenResponseReader reader = new WSTrustRequestSecurityTokenResponseReader (Constants.WstSpnegoProofTokenType, buffer.CreateMessage ().GetReaderAtBodyContents (), SecurityTokenSerializer, null); reader.Read (); byte [] raw = reader.Value.BinaryExchange.Value; if (gss) sspi.ProcessSpnegoInitialContextTokenResponse (raw); else sspi.ProcessMessageType2 (raw); // send MessageType3 WstRequestSecurityTokenResponse rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueGss); NetworkCredential cred = owner.Manager.ClientCredentials.Windows.ClientCredential; string user = string.IsNullOrEmpty (cred.UserName) ? Environment.UserName : cred.UserName; string pass = cred.Password ?? String.Empty; if (gss) rstr.BinaryExchange.Value = sspi.ProcessSpnegoProcessContextToken (user, pass); else rstr.BinaryExchange.Value = sspi.ProcessMessageType3 (user, pass); request = Message.CreateMessage (IssuerBinding.MessageVersion, Constants.WstIssueReplyAction, rstr); request.Headers.MessageId = new UniqueId (); request.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri); request.Headers.To = TargetAddress.Uri; buffer = request.CreateBufferedCopy (0x10000); // tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); proxy = new WSTrustSecurityTokenServiceProxy ( IssuerBinding, IssuerAddress); response = proxy.IssueReply (buffer.CreateMessage ()); // FIXME: use correct limitation buffer = response.CreateBufferedCopy (0x10000); // don't store this message for ckhash (it's not part // of exchange) /* Console.WriteLine (buffer.CreateMessage ()); */ throw new NotImplementedException (); }
// FIXME: use timeout Message ProcessMessageType3 (Message request, TimeSpan timeout) { // FIXME: use correct buffer size MessageBuffer buffer = request.CreateBufferedCopy (0x10000); /* Console.WriteLine (buffer.CreateMessage ()); */ WSTrustRequestSecurityTokenResponseReader reader = new WSTrustRequestSecurityTokenResponseReader (Constants.WstSpnegoProofTokenType, buffer.CreateMessage ().GetReaderAtBodyContents (), SecurityTokenSerializer, null); reader.Read (); byte [] raw = reader.Value.BinaryExchange.Value; bool gss = "NTLMSSP" != Encoding.ASCII.GetString (raw, 0, 7); /* foreach (byte b in raw) Console.Write ("{0:X02} ", b); Console.WriteLine (); */ SspiServerSession sspi; if (!sessions.TryGetValue (reader.Value.Context, out sspi)) throw new SecurityNegotiationException (String.Format ("The context '{0}' does not exist in this SSL negotiation manager", reader.Value.Context)); if (gss) sspi.ProcessSpnegoProcessContextToken (raw); else sspi.ProcessMessageType3 (raw); throw new NotImplementedException (); /* AppendNegotiationMessageXml (buffer.CreateMessage ().GetReaderAtBodyContents (), tlsInfo); //Console.WriteLine (System.Text.Encoding.UTF8.GetString (tlsInfo.Messages.ToArray ())); tls.ProcessClientKeyExchange (reader.Value.BinaryExchange.Value); byte [] serverFinished = tls.ProcessServerFinished (); // The shared key is computed as recommended in WS-Trust: // P_SHA1(encrypted_key,SHA1(exc14n(RST..RSTRs))+"CK-HASH") byte [] hash = SHA1.Create ().ComputeHash (tlsInfo.Messages.ToArray ()); byte [] key = tls.CreateHash (tls.MasterSecret, hash, "CK-HASH"); foreach (byte b in hash) Console.Write ("{0:X02} ", b); Console.WriteLine (); foreach (byte b in key) Console.Write ("{0:X02} ", b); Console.WriteLine (); WstRequestSecurityTokenResponseCollection col = new WstRequestSecurityTokenResponseCollection (); WstRequestSecurityTokenResponse rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.TokenType = Constants.WsscContextToken; DateTime from = DateTime.Now; // FIXME: not sure if arbitrary key is used here. SecurityContextSecurityToken sct = SecurityContextSecurityToken.CreateCookieSecurityContextToken ( // Create a new context. // (do not use sslnego context here.) new UniqueId (), "uuid-" + Guid.NewGuid (), key, from, // FIXME: use LocalServiceSecuritySettings.NegotiationTimeout from.AddHours (8), null, owner.Manager.ServiceCredentials.SecureConversationAuthentication.SecurityStateEncoder); rstr.RequestedSecurityToken = sct; rstr.RequestedProofToken = tls.ProcessApplicationData (key); rstr.RequestedAttachedReference = new LocalIdKeyIdentifierClause (sct.Id); rstr.RequestedUnattachedReference = new SecurityContextKeyIdentifierClause (sct.ContextId, null); WstLifetime lt = new WstLifetime (); lt.Created = from; // FIXME: use LocalServiceSecuritySettings.NegotiationTimeout lt.Expires = from.AddHours (8); rstr.Lifetime = lt; rstr.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueGss); rstr.BinaryExchange.Value = serverFinished; col.Responses.Add (rstr); // Authenticator is mandatory for MS sslnego. rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.Authenticator = tls.CreateHash (key, hash, "AUTH-HASH"); col.Responses.Add (rstr); sessions.Remove (reader.Value.Context); return Message.CreateMessage (request.Version, Constants.WstIssueReplyAction, col); */ }
public SecurityToken GetToken (TimeSpan timeout) { TlsnegoClientSessionContext tlsctx = new TlsnegoClientSessionContext (); TlsClientSession tls = new TlsClientSession (IssuerAddress.Uri.ToString (), client_certificate, owner.Manager.ClientCredentials.ServiceCertificate.Authentication); WstRequestSecurityToken rst = new WstRequestSecurityToken (); string contextId = rst.Context; // send ClientHello rst.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueTls); rst.BinaryExchange.Value = tls.ProcessClientHello (); Message request = Message.CreateMessage (IssuerBinding.MessageVersion, Constants.WstIssueAction, rst); request.Headers.MessageId = new UniqueId (); request.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri); request.Headers.To = TargetAddress.Uri; MessageBuffer buffer = request.CreateBufferedCopy (0x10000); tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); Message response = proxy.Issue (buffer.CreateMessage ()); // FIXME: use correct limitation buffer = response.CreateBufferedCopy (0x10000); tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); // receive ServerHello WSTrustRequestSecurityTokenResponseReader reader = new WSTrustRequestSecurityTokenResponseReader (Constants.WstTlsnegoProofTokenType, buffer.CreateMessage ().GetReaderAtBodyContents (), SecurityTokenSerializer, null); reader.Read (); if (reader.Value.RequestedSecurityToken != null) return reader.Value.RequestedSecurityToken; tls.ProcessServerHello (reader.Value.BinaryExchange.Value); // send ClientKeyExchange WstRequestSecurityTokenResponse rstr = new WstRequestSecurityTokenResponse (SecurityTokenSerializer); rstr.Context = reader.Value.Context; rstr.BinaryExchange = new WstBinaryExchange (Constants.WstBinaryExchangeValueTls); rstr.BinaryExchange.Value = tls.ProcessClientKeyExchange (); request = Message.CreateMessage (IssuerBinding.MessageVersion, Constants.WstIssueReplyAction, rstr); request.Headers.ReplyTo = new EndpointAddress (Constants.WsaAnonymousUri); request.Headers.To = TargetAddress.Uri; buffer = request.CreateBufferedCopy (0x10000); tlsctx.StoreMessage (buffer.CreateMessage ().GetReaderAtBodyContents ()); //Console.WriteLine (System.Text.Encoding.UTF8.GetString (tlsctx.GetC14NResults ())); // FIXME: regeneration of this instance is somehow required, but should not be. proxy = new WSTrustSecurityTokenServiceProxy ( IssuerBinding, IssuerAddress); response = proxy.IssueReply (buffer.CreateMessage ()); // FIXME: use correct limitation buffer = response.CreateBufferedCopy (0x10000); WstRequestSecurityTokenResponseCollection coll = new WstRequestSecurityTokenResponseCollection (); coll.Read (Constants.WstTlsnegoProofTokenType, buffer.CreateMessage ().GetReaderAtBodyContents (), SecurityTokenSerializer, null); if (coll.Responses.Count != 2) throw new SecurityNegotiationException (String.Format ("Expected response is RequestSecurityTokenResponseCollection which contains two RequestSecurityTokenResponse items, but it actually contains {0} items", coll.Responses.Count)); WstRequestSecurityTokenResponse r = coll.Responses [0]; tls.ProcessServerFinished (r.BinaryExchange.Value); SecurityContextSecurityToken sctSrc = r.RequestedSecurityToken; #if false // FIXME: should this final RSTR included in RSTRC considered too? XmlDocument doc = new XmlDocument (); doc.PreserveWhitespace = true; using (XmlDictionaryWriter dw = XmlDictionaryWriter.CreateDictionaryWriter (doc.CreateNavigator ().AppendChild ())) { if (r == null) throw new Exception ("r"); if (dw == null) throw new Exception ("dw"); r.WriteBodyContents (dw); } tlsctx.StoreMessage (XmlDictionaryReader.CreateDictionaryReader (new XmlNodeReader (doc))); #endif // the RequestedProofToken is represented as 32 bytes // of TLS ApplicationData. // - According to WSE2 doc, it is *the* key, but not // sure it also applies to WCF. // - WSS4J also seems to store the encryped shared key. // - (Important) It seems that without tls decryption, // .NET fails to recover the key. byte [] proof = tls.ProcessApplicationData ( (byte []) r.RequestedProofToken); byte [] key = proof; // Authenticate token. byte [] actual = coll.Responses [1].Authenticator; if (actual == null) throw new SecurityNegotiationException ("Token authenticator is expected in the RequestSecurityTokenResponse but not found."); if (coll.Responses [0].Context != contextId) throw new SecurityNegotiationException ("The context Id does not match with that of the corresponding token authenticator."); // H = sha1(exc14n(RST..RSTRs)) byte [] hash = SHA1.Create ().ComputeHash (tlsctx.GetC14NResults ()); byte [] referent = tls.CreateHash (key, hash, "AUTH-HASH"); /* Console.WriteLine (System.Text.Encoding.ASCII.GetString (tlsctx.GetC14NResults ())); Console.Write ("Hash: "); foreach (byte b in hash) Console.Write ("{0:X02} ", b); Console.WriteLine (); Console.Write ("Referent: "); foreach (byte b in referent) Console.Write ("{0:X02} ", b); Console.WriteLine (); Console.Write ("Actual: "); foreach (byte b in actual) Console.Write ("{0:X02} ", b); Console.WriteLine (); Console.Write ("Proof: "); foreach (byte b in proof) Console.Write ("{0:X02} ", b); Console.WriteLine (); */ bool mismatch = referent.Length != actual.Length; if (!mismatch) for (int i = 0; i < referent.Length; i++) if (referent [i] != actual [i]) mismatch = true; if (mismatch) throw new SecurityNegotiationException ("The CombinedHash does not match the expected value."); return sctSrc; }