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));
}
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);
}
void ReadLifetime ()
{
WstLifetime lt = new WstLifetime ();
res.Lifetime = lt;
if (reader.IsEmptyElement)
throw new XmlException (String.Format ("WS-Trust 'Lifetime' element is expected to have contents. {0}", LineInfo ()));
reader.Read ();
while (true) {
reader.MoveToContent ();
if (reader.NodeType != XmlNodeType.Element)
break;
if (reader.NamespaceURI == Constants.WsuNamespace) {
switch (reader.LocalName) {
case "Created":
lt.Created = XmlConvert.ToDateTime (reader.ReadElementContentAsString (), XmlDateTimeSerializationMode.RoundtripKind);
continue;
case "Expires":
lt.Expires = XmlConvert.ToDateTime (reader.ReadElementContentAsString (), XmlDateTimeSerializationMode.RoundtripKind);
continue;
}
}
throw new XmlException (String.Format ("Unexpected Lifetime content. Name is {0} and namespace URI is {1} {2}", reader.Name, reader.NamespaceURI, LineInfo ()));
}
reader.ReadEndElement ();
}
