void ValidateTokensByParameters(IEnumerable <SecurityTokenParameters> plist, List <SupportingTokenInfo> tokens, bool optional, SecurityTokenAttachmentMode attachMode)
{
foreach (SecurityTokenParameters p in plist)
{
SecurityTokenResolver r;
SecurityTokenAuthenticator a =
security.CreateTokenAuthenticator(p, out r);
SupportingTokenSpecification spec = ValidateTokensByParameters(a, r, tokens);
if (spec == null)
{
if (optional)
{
continue;
}
else
{
throw new MessageSecurityException(String.Format("No security token could be validated for authenticator '{0}' which is indicated by the '{1}' supporting token parameters", a, attachMode));
}
}
else
{
// For endorsing tokens, verify corresponding signatures.
switch (attachMode)
{
case SecurityTokenAttachmentMode.Endorsing:
case SecurityTokenAttachmentMode.SignedEndorsing:
WSSignedXml esxml = GetSignatureForToken(spec.SecurityToken);
if (esxml == null)
{
throw new MessageSecurityException(String.Format("The '{1}' token '{0}' is expected to endorse the primary signature but no corresponding signature is found.", spec.SecurityToken, attachMode));
}
bool confirmed;
SecurityAlgorithmSuite suite = security.Element.DefaultAlgorithmSuite;
foreach (SecurityTokenReferenceKeyInfo kic in esxml.KeyInfo)
{
SecurityKey signKey = spec.SecurityToken.ResolveKeyIdentifierClause(kic.Clause);
SymmetricSecurityKey symkey = signKey as SymmetricSecurityKey;
if (symkey != null)
{
confirmed = esxml.CheckSignature(symkey.GetKeyedHashAlgorithm(suite.DefaultSymmetricSignatureAlgorithm));
}
else
{
AsymmetricAlgorithm alg = ((AsymmetricSecurityKey)signKey).GetAsymmetricAlgorithm(suite.DefaultAsymmetricSignatureAlgorithm, false);
confirmed = esxml.CheckSignature(alg);
}
if (!confirmed)
{
throw new MessageSecurityException(String.Format("Signature for '{1}' token '{0}' is invalid.", spec.SecurityToken, attachMode));
}
break;
}
sec_prop.ConfirmedSignatures.Insert(0, Convert.ToBase64String(esxml.SignatureValue));
break;
}
}
sec_prop.IncomingSupportingTokens.Add(spec);
}
}
void ExtractSecurity()
{
if (security.MessageProtectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature &&
wss_header.Find <SignedXml> () != null)
{
throw new MessageSecurityException("The security binding element expects that the message signature is encrypted, while it isn't.");
}
WrappedKeySecurityToken wk = wss_header.Find <WrappedKeySecurityToken> ();
DerivedKeySecurityToken dk = wss_header.Find <DerivedKeySecurityToken> ();
if (wk != null)
{
if (Parameters.RequireDerivedKeys && dk == null)
{
throw new MessageSecurityException("DerivedKeyToken is required in this contract, but was not found in the message");
}
}
else
{
// FIXME: this is kind of hack for symmetric reply processing.
wk = RequestSecurity.ProtectionToken != null ? RequestSecurity.ProtectionToken.SecurityToken as WrappedKeySecurityToken : null;
}
SymmetricSecurityKey wkkey = wk != null ? wk.SecurityKeys [0] as SymmetricSecurityKey : null;
wss_header_reader.DecryptSecurity(this, wkkey, RequestSecurity != null ? RequestSecurity.EncryptionKey : null);
// signature confirmation
WSSignedXml sxml = wss_header.Find <WSSignedXml> ();
if (sxml == null)
{
throw new MessageSecurityException("The the message signature is expected but not found.");
}
bool confirmed = false;
SecurityKeyIdentifierClause sigClause = null;
foreach (KeyInfoClause kic in sxml.KeyInfo)
{
SecurityTokenReferenceKeyInfo r = kic as SecurityTokenReferenceKeyInfo;
if (r != null)
{
sigClause = r.Clause;
}
}
if (sigClause == null)
{
throw new MessageSecurityException("SecurityTokenReference was not found in dsig:Signature KeyInfo.");
}
SecurityToken signToken;
SecurityKey signKey;
signToken = TokenResolver.ResolveToken(sigClause);
signKey = signToken.ResolveKeyIdentifierClause(sigClause);
SymmetricSecurityKey symkey = signKey as SymmetricSecurityKey;
if (symkey != null)
{
confirmed = sxml.CheckSignature(new HMACSHA1(symkey.GetSymmetricKey()));
if (wk != null)
{
// FIXME: authenticate token
sec_prop.ProtectionToken = new SecurityTokenSpecification(wk, null);
}
}
else
{
AsymmetricAlgorithm alg = ((AsymmetricSecurityKey)signKey).GetAsymmetricAlgorithm(security.DefaultSignatureAlgorithm, false);
confirmed = sxml.CheckSignature(alg);
sec_prop.InitiatorToken = new SecurityTokenSpecification(
signToken,
security.TokenAuthenticator.ValidateToken(signToken));
}
if (!confirmed)
{
throw new MessageSecurityException("Message signature is invalid.");
}
// token authentication
// FIXME: it might not be limited to recipient
if (Direction == MessageDirection.Input)
{
ProcessSupportingTokens(sxml);
}
sec_prop.EncryptionKey = ((SymmetricSecurityKey)wk.SecurityKeys [0]).GetSymmetricKey();
sec_prop.ConfirmedSignatures.Add(Convert.ToBase64String(sxml.SignatureValue));
}
public Message SecureMessage()
{
secprop = Message.Properties.Security ?? new SecurityMessageProperty();
SecurityToken encToken =
secprop.InitiatorToken != null ? secprop.InitiatorToken.SecurityToken : security.EncryptionToken;
// FIXME: it might be still incorrect.
SecurityToken signToken =
Parameters == CounterParameters ? null :
security.SigningToken;
MessageProtectionOrder protectionOrder =
security.MessageProtectionOrder;
SecurityTokenSerializer serializer =
security.TokenSerializer;
SecurityBindingElement element =
security.Element;
SecurityAlgorithmSuite suite = element.DefaultAlgorithmSuite;
// FIXME: remove this hack
if (!ShouldOutputEncryptedKey)
{
encToken = new BinarySecretSecurityToken(secprop.EncryptionKey);
}
string messageId = "uuid-" + Guid.NewGuid();
int identForMessageId = 1;
XmlDocument doc = new XmlDocument();
doc.PreserveWhitespace = true;
UniqueId relatesTo = RelatesTo;
if (relatesTo != null)
{
msg.Headers.RelatesTo = relatesTo;
}
else // FIXME: probably it is always added when it is stateful ?
{
msg.Headers.MessageId = new UniqueId("urn:" + messageId);
}
// FIXME: get correct ReplyTo value
if (Direction == MessageDirection.Input)
{
msg.Headers.Add(MessageHeader.CreateHeader("ReplyTo", msg.Version.Addressing.Namespace, EndpointAddress10.FromEndpointAddress(new EndpointAddress(Constants.WsaAnonymousUri))));
}
if (MessageTo != null)
{
msg.Headers.Add(MessageHeader.CreateHeader("To", msg.Version.Addressing.Namespace, MessageTo.Uri.AbsoluteUri, true));
}
// wss:Security
WSSecurityMessageHeader header =
new WSSecurityMessageHeader(serializer);
msg.Headers.Add(header);
// 1. [Timestamp]
if (element.IncludeTimestamp)
{
WsuTimestamp timestamp = new WsuTimestamp();
timestamp.Id = messageId + "-" + identForMessageId++;
timestamp.Created = DateTime.Now;
// FIXME: on service side, use element.LocalServiceSettings.TimestampValidityDuration
timestamp.Expires = timestamp.Created.Add(element.LocalClientSettings.TimestampValidityDuration);
header.AddContent(timestamp);
}
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("s", msg.Version.Envelope.Namespace);
nsmgr.AddNamespace("o", Constants.WssNamespace);
nsmgr.AddNamespace("u", Constants.WsuNamespace);
nsmgr.AddNamespace("o11", Constants.Wss11Namespace);
/*WrappedKey*/ SecurityToken primaryToken = null;
DerivedKeySecurityToken dkeyToken = null;
SecurityToken actualToken = null;
SecurityKeyIdentifierClause actualClause = null;
Signature sig = null;
List <DerivedKeySecurityToken> derivedKeys =
new List <DerivedKeySecurityToken> ();
SymmetricAlgorithm masterKey = new RijndaelManaged();
masterKey.KeySize = suite.DefaultSymmetricKeyLength;
masterKey.Mode = CipherMode.CBC;
masterKey.Padding = PaddingMode.ISO10126;
SymmetricAlgorithm actualKey = masterKey;
// 2. [Encryption Token]
// SecurityTokenInclusionMode
// - Initiator or Recipient
// - done or notyet. FIXME: not implemented yet
// It also affects on key reference output
bool includeEncToken = // /* FIXME: remove this hack */Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.RecipientParameters.InclusionMode, false);
bool includeSigToken = // /* FIXME: remove this hack */ Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken(
Security.InitiatorParameters.InclusionMode, false);
SecurityKeyIdentifierClause encClause = ShouldOutputEncryptedKey ?
CounterParameters.CallCreateKeyIdentifierClause(encToken, !ShouldOutputEncryptedKey ? SecurityTokenReferenceStyle.Internal : includeEncToken ? Parameters.ReferenceStyle : SecurityTokenReferenceStyle.External) : null;
MessagePartSpecification sigSpec = SignaturePart;
MessagePartSpecification encSpec = EncryptionPart;
// encryption key (possibly also used for signing)
// FIXME: get correct SymmetricAlgorithm according to the algorithm suite
if (secprop.EncryptionKey != null)
{
actualKey.Key = secprop.EncryptionKey;
}
// FIXME: remove thid hack
if (!ShouldOutputEncryptedKey)
{
primaryToken = RequestContext.RequestMessage.Properties.Security.ProtectionToken.SecurityToken as WrappedKeySecurityToken;
}
else
{
primaryToken =
// FIXME: remove this hack?
encToken is SecurityContextSecurityToken ? encToken :
new WrappedKeySecurityToken(messageId + "-" + identForMessageId++,
actualKey.Key,
// security.DefaultKeyWrapAlgorithm,
Parameters.InternalHasAsymmetricKey ?
suite.DefaultAsymmetricKeyWrapAlgorithm :
suite.DefaultSymmetricKeyWrapAlgorithm,
encToken,
encClause != null ? new SecurityKeyIdentifier(encClause) : null);
}
// If it reuses request's encryption key, do not output.
if (ShouldOutputEncryptedKey)
{
header.AddContent(primaryToken);
}
actualToken = primaryToken;
// FIXME: I doubt it is correct...
WrappedKeySecurityToken requestEncKey = ShouldOutputEncryptedKey ? null : primaryToken as WrappedKeySecurityToken;
actualClause = requestEncKey == null ? (SecurityKeyIdentifierClause)
new LocalIdKeyIdentifierClause(actualToken.Id, typeof(WrappedKeySecurityToken)) :
new InternalEncryptedKeyIdentifierClause(SHA1.Create().ComputeHash(requestEncKey.GetWrappedKey()));
// generate derived key if needed
if (CounterParameters.RequireDerivedKeys)
{
RijndaelManaged deriv = new RijndaelManaged();
deriv.KeySize = suite.DefaultEncryptionKeyDerivationLength;
deriv.Mode = CipherMode.CBC;
deriv.Padding = PaddingMode.ISO10126;
deriv.GenerateKey();
dkeyToken = new DerivedKeySecurityToken(
GenerateId(doc),
null, // algorithm
actualClause,
new InMemorySymmetricSecurityKey(actualKey.Key),
null, // name
null, // generation
null, // offset
deriv.Key.Length,
null, // label
deriv.Key);
derivedKeys.Add(dkeyToken);
actualToken = dkeyToken;
actualKey.Key = ((SymmetricSecurityKey)dkeyToken.SecurityKeys [0]).GetSymmetricKey();
actualClause = new LocalIdKeyIdentifierClause(dkeyToken.Id);
header.AddContent(dkeyToken);
}
ReferenceList refList = new ReferenceList();
// When encrypted with DerivedKeyToken, put references
// immediately after the derived token (not inside the
// primary token).
// Similarly, when we do not output EncryptedKey,
// output ReferenceList in the same way.
if (CounterParameters.RequireDerivedKeys ||
!ShouldOutputEncryptedKey)
{
header.AddContent(refList);
}
else
{
((WrappedKeySecurityToken)primaryToken).ReferenceList = refList;
}
// [Signature Confirmation]
if (security.RequireSignatureConfirmation && secprop.ConfirmedSignatures.Count > 0)
{
foreach (string value in secprop.ConfirmedSignatures)
{
header.AddContent(new Wss11SignatureConfirmation(GenerateId(doc), value));
}
}
SupportingTokenInfoCollection tokenInfos =
Direction == MessageDirection.Input ?
security.CollectSupportingTokens(GetAction()) :
new SupportingTokenInfoCollection(); // empty
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
header.AddContent(tinfo.Token);
}
// populate DOM to sign.
XPathNavigator nav = doc.CreateNavigator();
using (XmlWriter w = nav.AppendChild()) {
msg.WriteMessage(w);
}
XmlElement body = doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement;
string bodyId = null;
XmlElement secElem = null;
Collection <WSSignedXml> endorsedSignatures =
new Collection <WSSignedXml> ();
bool signatureProtection = (protectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature);
// Below are o:Security contents that are not signed...
if (includeSigToken && signToken != null)
{
header.AddContent(signToken);
}
switch (protectionOrder)
{
case MessageProtectionOrder.EncryptBeforeSign:
// FIXME: implement
throw new NotImplementedException();
case MessageProtectionOrder.SignBeforeEncrypt:
case MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature:
// sign
// see clause 8 of WS-SecurityPolicy C.2.2
WSSignedXml sxml = new WSSignedXml(doc);
SecurityTokenReferenceKeyInfo sigKeyInfo;
sig = sxml.Signature;
sig.SignedInfo.CanonicalizationMethod =
suite.DefaultCanonicalizationAlgorithm;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/u:Timestamp", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
CreateReference(sig, elem, elem.GetAttribute("Id", Constants.WsuNamespace));
}
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode != SecurityTokenAttachmentMode.Endorsing)
{
XmlElement el = sxml.GetIdElement(doc, tinfo.Token.Id);
CreateReference(sig, el, el.GetAttribute("Id", Constants.WsuNamespace));
}
}
XmlNodeList nodes = doc.SelectNodes("/s:Envelope/s:Header/*", nsmgr);
for (int i = 0; i < msg.Headers.Count; i++)
{
MessageHeaderInfo h = msg.Headers [i];
if (h.Name == "Security" && h.Namespace == Constants.WssNamespace)
{
secElem = nodes [i] as XmlElement;
}
else if (sigSpec.HeaderTypes.Count == 0 ||
sigSpec.HeaderTypes.Contains(new XmlQualifiedName(h.Name, h.Namespace)))
{
string id = GenerateId(doc);
h.Id = id;
CreateReference(sig, nodes [i] as XmlElement, id);
}
}
if (sigSpec.IsBodyIncluded)
{
bodyId = GenerateId(doc);
CreateReference(sig, body.ParentNode as XmlElement, bodyId);
}
if (security.DefaultSignatureAlgorithm == SignedXml.XmlDsigHMACSHA1Url)
{
// FIXME: use appropriate hash algorithm
sxml.ComputeSignature(new HMACSHA1(actualKey.Key));
sigKeyInfo = new SecurityTokenReferenceKeyInfo(actualClause, serializer, doc);
}
else
{
SecurityKeyIdentifierClause signClause =
CounterParameters.CallCreateKeyIdentifierClause(signToken, includeSigToken ? CounterParameters.ReferenceStyle : SecurityTokenReferenceStyle.External);
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)signToken.ResolveKeyIdentifierClause(signClause);
sxml.SigningKey = signKey.GetAsymmetricAlgorithm(security.DefaultSignatureAlgorithm, true);
sxml.ComputeSignature();
sigKeyInfo = new SecurityTokenReferenceKeyInfo(signClause, serializer, doc);
}
sxml.KeyInfo = new KeyInfo();
sxml.KeyInfo.AddClause(sigKeyInfo);
if (!signatureProtection)
{
header.AddContent(sig);
}
// endorse the signature with (signed)endorsing
// supporting tokens.
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
switch (tinfo.Mode)
{
case SecurityTokenAttachmentMode.Endorsing:
case SecurityTokenAttachmentMode.SignedEndorsing:
if (sxml.Signature.Id == null)
{
sig.Id = GenerateId(doc);
secElem.AppendChild(sxml.GetXml());
}
WSSignedXml ssxml = new WSSignedXml(doc);
ssxml.Signature.SignedInfo.CanonicalizationMethod = suite.DefaultCanonicalizationAlgorithm;
CreateReference(ssxml.Signature, doc, sig.Id);
SecurityToken sst = tinfo.Token;
SecurityKey ssk = sst.SecurityKeys [0]; // FIXME: could be different?
SecurityKeyIdentifierClause tclause = new LocalIdKeyIdentifierClause(sst.Id); // FIXME: could be different?
if (ssk is SymmetricSecurityKey)
{
SymmetricSecurityKey signKey = (SymmetricSecurityKey)ssk;
ssxml.ComputeSignature(signKey.GetKeyedHashAlgorithm(suite.DefaultSymmetricSignatureAlgorithm));
}
else
{
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey)ssk;
ssxml.SigningKey = signKey.GetAsymmetricAlgorithm(suite.DefaultAsymmetricSignatureAlgorithm, true);
ssxml.ComputeSignature();
}
ssxml.KeyInfo.AddClause(new SecurityTokenReferenceKeyInfo(tclause, serializer, doc));
if (!signatureProtection)
{
header.AddContent(ssxml.Signature);
}
endorsedSignatures.Add(ssxml);
break;
}
}
// encrypt
WSEncryptedXml exml = new WSEncryptedXml(doc);
EncryptedData edata = Encrypt(body, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(body, edata, false);
// encrypt signature
if (signatureProtection)
{
XmlElement sigxml = sig.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent(edata);
foreach (WSSignedXml ssxml in endorsedSignatures)
{
sigxml = ssxml.GetXml();
edata = Encrypt(sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent(edata);
}
if (security.RequireSignatureConfirmation)
{
Collection <Wss11SignatureConfirmation> confs = header.FindAll <Wss11SignatureConfirmation> ();
int count = 0;
foreach (XmlElement elem in doc.SelectNodes("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
{
edata = Encrypt(elem, actualKey, confs [count].Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(elem, edata, false);
header.Contents.Insert(header.Contents.IndexOf(confs [count]), edata);
header.Contents.Remove(confs [count++]);
}
}
}
// encrypt Encrypted supporting tokens
foreach (SupportingTokenInfo tinfo in tokenInfos)
{
if (tinfo.Mode == SecurityTokenAttachmentMode.SignedEncrypted)
{
XmlElement el = exml.GetIdElement(doc, tinfo.Token.Id);
tinfo.Encrypted = Encrypt(el, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement(el, tinfo.Encrypted, false);
header.Contents.Insert(header.Contents.IndexOf(tinfo.Token), tinfo.Encrypted);
header.Contents.Remove(tinfo.Token);
}
}
break;
}
Message ret = Message.CreateMessage(msg.Version, msg.Headers.Action, new XmlNodeReader(doc.SelectSingleNode("/s:Envelope/s:Body/*", nsmgr) as XmlElement));
ret.Properties.Security = (SecurityMessageProperty)secprop.CreateCopy();
ret.Properties.Security.EncryptionKey = masterKey.Key;
ret.BodyId = bodyId;
// FIXME: can we support TransportToken here?
if (element is AsymmetricSecurityBindingElement)
{
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(encToken, null); // FIXME: second argument
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification(signToken, null); // FIXME: second argument
}
else
{
ret.Properties.Security.ProtectionToken = new SecurityTokenSpecification(primaryToken, null);
}
ret.Headers.Clear();
ret.Headers.CopyHeadersFrom(msg);
// Header contents are:
// - Timestamp
// - SignatureConfirmation if required
// - EncryptionToken if included
// - derived key token for EncryptionToken
// - ReferenceList for encrypted items
// - signed supporting tokens
// - signed endorsing supporting tokens
// (i.e. Signed/SignedEncrypted/SignedEndorsing)
// - Signature Token if different from enc token.
// - derived key token for sig token if different
// - Signature for:
// - Timestamp
// - supporting tokens (regardless of
// its inclusion)
// - message parts in SignedParts
// - SignatureToken if TokenProtection
// (regardless of its inclusion)
// - Signatures for the main signature (above),
// for every endorsing token and signed
// endorsing token.
//
//MessageBuffer zzz = ret.CreateBufferedCopy (100000);
//ret = zzz.CreateMessage ();
//Console.WriteLine (zzz.CreateMessage ());
return(ret);
}
public Message SecureMessage ()
{
secprop = Message.Properties.Security ?? new SecurityMessageProperty ();
SecurityToken encToken =
secprop.InitiatorToken != null ? secprop.InitiatorToken.SecurityToken : security.EncryptionToken;
// FIXME: it might be still incorrect.
SecurityToken signToken =
Parameters == CounterParameters ? null :
security.SigningToken;
MessageProtectionOrder protectionOrder =
security.MessageProtectionOrder;
SecurityTokenSerializer serializer =
security.TokenSerializer;
SecurityBindingElement element =
security.Element;
SecurityAlgorithmSuite suite = element.DefaultAlgorithmSuite;
// FIXME: remove this hack
if (!ShouldOutputEncryptedKey)
encToken = new BinarySecretSecurityToken (secprop.EncryptionKey);
string messageId = "uuid-" + Guid.NewGuid ();
int identForMessageId = 1;
XmlDocument doc = new XmlDocument ();
doc.PreserveWhitespace = true;
UniqueId relatesTo = RelatesTo;
if (relatesTo != null)
msg.Headers.RelatesTo = relatesTo;
else // FIXME: probably it is always added when it is stateful ?
msg.Headers.MessageId = new UniqueId ("urn:" + messageId);
// FIXME: get correct ReplyTo value
if (Direction == MessageDirection.Input)
msg.Headers.Add (MessageHeader.CreateHeader ("ReplyTo", msg.Version.Addressing.Namespace, EndpointAddress10.FromEndpointAddress (new EndpointAddress (Constants.WsaAnonymousUri))));
if (MessageTo != null)
msg.Headers.Add (MessageHeader.CreateHeader ("To", msg.Version.Addressing.Namespace, MessageTo.Uri.AbsoluteUri, true));
// wss:Security
WSSecurityMessageHeader header =
new WSSecurityMessageHeader (serializer);
msg.Headers.Add (header);
// 1. [Timestamp]
if (element.IncludeTimestamp) {
WsuTimestamp timestamp = new WsuTimestamp ();
timestamp.Id = messageId + "-" + identForMessageId++;
timestamp.Created = DateTime.Now;
// FIXME: on service side, use element.LocalServiceSettings.TimestampValidityDuration
timestamp.Expires = timestamp.Created.Add (element.LocalClientSettings.TimestampValidityDuration);
header.AddContent (timestamp);
}
XmlNamespaceManager nsmgr = new XmlNamespaceManager (doc.NameTable);
nsmgr.AddNamespace ("s", msg.Version.Envelope.Namespace);
nsmgr.AddNamespace ("o", Constants.WssNamespace);
nsmgr.AddNamespace ("u", Constants.WsuNamespace);
nsmgr.AddNamespace ("o11", Constants.Wss11Namespace);
/*WrappedKey*/SecurityToken primaryToken = null;
DerivedKeySecurityToken dkeyToken = null;
SecurityToken actualToken = null;
SecurityKeyIdentifierClause actualClause = null;
Signature sig = null;
List<DerivedKeySecurityToken> derivedKeys =
new List<DerivedKeySecurityToken> ();
SymmetricAlgorithm masterKey = new RijndaelManaged ();
masterKey.KeySize = suite.DefaultSymmetricKeyLength;
masterKey.Mode = CipherMode.CBC;
masterKey.Padding = PaddingMode.ISO10126;
SymmetricAlgorithm actualKey = masterKey;
// 2. [Encryption Token]
// SecurityTokenInclusionMode
// - Initiator or Recipient
// - done or notyet. FIXME: not implemented yet
// It also affects on key reference output
bool includeEncToken = // /* FIXME: remove this hack */Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken (
Security.RecipientParameters.InclusionMode, false);
bool includeSigToken = // /* FIXME: remove this hack */ Parameters is SslSecurityTokenParameters ? false :
ShouldIncludeToken (
Security.InitiatorParameters.InclusionMode, false);
SecurityKeyIdentifierClause encClause = ShouldOutputEncryptedKey ?
CounterParameters.CallCreateKeyIdentifierClause (encToken, !ShouldOutputEncryptedKey ? SecurityTokenReferenceStyle.Internal : includeEncToken ? Parameters.ReferenceStyle : SecurityTokenReferenceStyle.External) : null;
MessagePartSpecification sigSpec = SignaturePart;
MessagePartSpecification encSpec = EncryptionPart;
// encryption key (possibly also used for signing)
// FIXME: get correct SymmetricAlgorithm according to the algorithm suite
if (secprop.EncryptionKey != null)
actualKey.Key = secprop.EncryptionKey;
// FIXME: remove thid hack
if (!ShouldOutputEncryptedKey)
primaryToken = RequestContext.RequestMessage.Properties.Security.ProtectionToken.SecurityToken as WrappedKeySecurityToken;
else
primaryToken =
// FIXME: remove this hack?
encToken is SecurityContextSecurityToken ? encToken :
new WrappedKeySecurityToken (messageId + "-" + identForMessageId++,
actualKey.Key,
// security.DefaultKeyWrapAlgorithm,
Parameters.InternalHasAsymmetricKey ?
suite.DefaultAsymmetricKeyWrapAlgorithm :
suite.DefaultSymmetricKeyWrapAlgorithm,
encToken,
encClause != null ? new SecurityKeyIdentifier (encClause) : null);
// If it reuses request's encryption key, do not output.
if (ShouldOutputEncryptedKey)
header.AddContent (primaryToken);
actualToken = primaryToken;
// FIXME: I doubt it is correct...
WrappedKeySecurityToken requestEncKey = ShouldOutputEncryptedKey ? null : primaryToken as WrappedKeySecurityToken;
actualClause = requestEncKey == null ? (SecurityKeyIdentifierClause)
new LocalIdKeyIdentifierClause (actualToken.Id, typeof (WrappedKeySecurityToken)) :
new InternalEncryptedKeyIdentifierClause (SHA1.Create ().ComputeHash (requestEncKey.GetWrappedKey ()));
// generate derived key if needed
if (CounterParameters.RequireDerivedKeys) {
RijndaelManaged deriv = new RijndaelManaged ();
deriv.KeySize = suite.DefaultEncryptionKeyDerivationLength;
deriv.Mode = CipherMode.CBC;
deriv.Padding = PaddingMode.ISO10126;
deriv.GenerateKey ();
dkeyToken = new DerivedKeySecurityToken (
GenerateId (doc),
null, // algorithm
actualClause,
new InMemorySymmetricSecurityKey (actualKey.Key),
null, // name
null, // generation
null, // offset
deriv.Key.Length,
null, // label
deriv.Key);
derivedKeys.Add (dkeyToken);
actualToken = dkeyToken;
actualKey.Key = ((SymmetricSecurityKey) dkeyToken.SecurityKeys [0]).GetSymmetricKey ();
actualClause = new LocalIdKeyIdentifierClause (dkeyToken.Id);
header.AddContent (dkeyToken);
}
ReferenceList refList = new ReferenceList ();
// When encrypted with DerivedKeyToken, put references
// immediately after the derived token (not inside the
// primary token).
// Similarly, when we do not output EncryptedKey,
// output ReferenceList in the same way.
if (CounterParameters.RequireDerivedKeys ||
!ShouldOutputEncryptedKey)
header.AddContent (refList);
else
((WrappedKeySecurityToken) primaryToken).ReferenceList = refList;
// [Signature Confirmation]
if (security.RequireSignatureConfirmation && secprop.ConfirmedSignatures.Count > 0)
foreach (string value in secprop.ConfirmedSignatures)
header.AddContent (new Wss11SignatureConfirmation (GenerateId (doc), value));
SupportingTokenInfoCollection tokenInfos =
Direction == MessageDirection.Input ?
security.CollectSupportingTokens (GetAction ()) :
new SupportingTokenInfoCollection (); // empty
foreach (SupportingTokenInfo tinfo in tokenInfos)
header.AddContent (tinfo.Token);
// populate DOM to sign.
XPathNavigator nav = doc.CreateNavigator ();
using (XmlWriter w = nav.AppendChild ()) {
msg.WriteMessage (w);
}
XmlElement body = doc.SelectSingleNode ("/s:Envelope/s:Body/*", nsmgr) as XmlElement;
string bodyId = null;
XmlElement secElem = null;
Collection<WSSignedXml> endorsedSignatures =
new Collection<WSSignedXml> ();
bool signatureProtection = (protectionOrder == MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature);
// Below are o:Security contents that are not signed...
if (includeSigToken && signToken != null)
header.AddContent (signToken);
switch (protectionOrder) {
case MessageProtectionOrder.EncryptBeforeSign:
// FIXME: implement
throw new NotImplementedException ();
case MessageProtectionOrder.SignBeforeEncrypt:
case MessageProtectionOrder.SignBeforeEncryptAndEncryptSignature:
// sign
// see clause 8 of WS-SecurityPolicy C.2.2
WSSignedXml sxml = new WSSignedXml (doc);
SecurityTokenReferenceKeyInfo sigKeyInfo;
sig = sxml.Signature;
sig.SignedInfo.CanonicalizationMethod =
suite.DefaultCanonicalizationAlgorithm;
foreach (XmlElement elem in doc.SelectNodes ("/s:Envelope/s:Header/o:Security/u:Timestamp", nsmgr))
CreateReference (sig, elem, elem.GetAttribute ("Id", Constants.WsuNamespace));
foreach (XmlElement elem in doc.SelectNodes ("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr))
CreateReference (sig, elem, elem.GetAttribute ("Id", Constants.WsuNamespace));
foreach (SupportingTokenInfo tinfo in tokenInfos)
if (tinfo.Mode != SecurityTokenAttachmentMode.Endorsing) {
XmlElement el = sxml.GetIdElement (doc, tinfo.Token.Id);
CreateReference (sig, el, el.GetAttribute ("Id", Constants.WsuNamespace));
}
XmlNodeList nodes = doc.SelectNodes ("/s:Envelope/s:Header/*", nsmgr);
for (int i = 0; i < msg.Headers.Count; i++) {
MessageHeaderInfo h = msg.Headers [i];
if (h.Name == "Security" && h.Namespace == Constants.WssNamespace)
secElem = nodes [i] as XmlElement;
else if (sigSpec.HeaderTypes.Count == 0 ||
sigSpec.HeaderTypes.Contains (new XmlQualifiedName (h.Name, h.Namespace))) {
string id = GenerateId (doc);
h.Id = id;
CreateReference (sig, nodes [i] as XmlElement, id);
}
}
if (sigSpec.IsBodyIncluded) {
bodyId = GenerateId (doc);
CreateReference (sig, body.ParentNode as XmlElement, bodyId);
}
if (security.DefaultSignatureAlgorithm == SignedXml.XmlDsigHMACSHA1Url) {
// FIXME: use appropriate hash algorithm
sxml.ComputeSignature (new HMACSHA1 (actualKey.Key));
sigKeyInfo = new SecurityTokenReferenceKeyInfo (actualClause, serializer, doc);
}
else {
SecurityKeyIdentifierClause signClause =
CounterParameters.CallCreateKeyIdentifierClause (signToken, includeSigToken ? CounterParameters.ReferenceStyle : SecurityTokenReferenceStyle.External);
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey) signToken.ResolveKeyIdentifierClause (signClause);
sxml.SigningKey = signKey.GetAsymmetricAlgorithm (security.DefaultSignatureAlgorithm, true);
sxml.ComputeSignature ();
sigKeyInfo = new SecurityTokenReferenceKeyInfo (signClause, serializer, doc);
}
sxml.KeyInfo = new KeyInfo ();
sxml.KeyInfo.AddClause (sigKeyInfo);
if (!signatureProtection)
header.AddContent (sig);
// endorse the signature with (signed)endorsing
// supporting tokens.
foreach (SupportingTokenInfo tinfo in tokenInfos) {
switch (tinfo.Mode) {
case SecurityTokenAttachmentMode.Endorsing:
case SecurityTokenAttachmentMode.SignedEndorsing:
if (sxml.Signature.Id == null) {
sig.Id = GenerateId (doc);
secElem.AppendChild (sxml.GetXml ());
}
WSSignedXml ssxml = new WSSignedXml (doc);
ssxml.Signature.SignedInfo.CanonicalizationMethod = suite.DefaultCanonicalizationAlgorithm;
CreateReference (ssxml.Signature, doc, sig.Id);
SecurityToken sst = tinfo.Token;
SecurityKey ssk = sst.SecurityKeys [0]; // FIXME: could be different?
SecurityKeyIdentifierClause tclause = new LocalIdKeyIdentifierClause (sst.Id); // FIXME: could be different?
if (ssk is SymmetricSecurityKey) {
SymmetricSecurityKey signKey = (SymmetricSecurityKey) ssk;
ssxml.ComputeSignature (signKey.GetKeyedHashAlgorithm (suite.DefaultSymmetricSignatureAlgorithm));
} else {
AsymmetricSecurityKey signKey = (AsymmetricSecurityKey) ssk;
ssxml.SigningKey = signKey.GetAsymmetricAlgorithm (suite.DefaultAsymmetricSignatureAlgorithm, true);
ssxml.ComputeSignature ();
}
ssxml.KeyInfo.AddClause (new SecurityTokenReferenceKeyInfo (tclause, serializer, doc));
if (!signatureProtection)
header.AddContent (ssxml.Signature);
endorsedSignatures.Add (ssxml);
break;
}
}
// encrypt
WSEncryptedXml exml = new WSEncryptedXml (doc);
EncryptedData edata = Encrypt (body, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement (body, edata, false);
// encrypt signature
if (signatureProtection) {
XmlElement sigxml = sig.GetXml ();
edata = Encrypt (sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent (edata);
foreach (WSSignedXml ssxml in endorsedSignatures) {
sigxml = ssxml.GetXml ();
edata = Encrypt (sigxml, actualKey, actualToken.Id, refList, actualClause, exml, doc);
header.AddContent (edata);
}
if (security.RequireSignatureConfirmation) {
Collection<Wss11SignatureConfirmation> confs = header.FindAll<Wss11SignatureConfirmation> ();
int count = 0;
foreach (XmlElement elem in doc.SelectNodes ("/s:Envelope/s:Header/o:Security/o11:SignatureConfirmation", nsmgr)) {
edata = Encrypt (elem, actualKey, confs [count].Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement (elem, edata, false);
header.Contents.Insert (header.Contents.IndexOf (confs [count]), edata);
header.Contents.Remove (confs [count++]);
}
}
}
// encrypt Encrypted supporting tokens
foreach (SupportingTokenInfo tinfo in tokenInfos) {
if (tinfo.Mode == SecurityTokenAttachmentMode.SignedEncrypted) {
XmlElement el = exml.GetIdElement (doc, tinfo.Token.Id);
tinfo.Encrypted = Encrypt (el, actualKey, actualToken.Id, refList, actualClause, exml, doc);
EncryptedXml.ReplaceElement (el, tinfo.Encrypted, false);
header.Contents.Insert (header.Contents.IndexOf (tinfo.Token), tinfo.Encrypted);
header.Contents.Remove (tinfo.Token);
}
}
break;
}
Message ret = Message.CreateMessage (msg.Version, msg.Headers.Action, new XmlNodeReader (doc.SelectSingleNode ("/s:Envelope/s:Body/*", nsmgr) as XmlElement));
ret.Properties.Security = (SecurityMessageProperty) secprop.CreateCopy ();
ret.Properties.Security.EncryptionKey = masterKey.Key;
ret.BodyId = bodyId;
// FIXME: can we support TransportToken here?
if (element is AsymmetricSecurityBindingElement) {
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification (encToken, null); // FIXME: second argument
ret.Properties.Security.InitiatorToken = new SecurityTokenSpecification (signToken, null); // FIXME: second argument
}
else
ret.Properties.Security.ProtectionToken = new SecurityTokenSpecification (primaryToken, null);
ret.Headers.Clear ();
ret.Headers.CopyHeadersFrom (msg);
// Header contents are:
// - Timestamp
// - SignatureConfirmation if required
// - EncryptionToken if included
// - derived key token for EncryptionToken
// - ReferenceList for encrypted items
// - signed supporting tokens
// - signed endorsing supporting tokens
// (i.e. Signed/SignedEncrypted/SignedEndorsing)
// - Signature Token if different from enc token.
// - derived key token for sig token if different
// - Signature for:
// - Timestamp
// - supporting tokens (regardless of
// its inclusion)
// - message parts in SignedParts
// - SignatureToken if TokenProtection
// (regardless of its inclusion)
// - Signatures for the main signature (above),
// for every endorsing token and signed
// endorsing token.
//
//MessageBuffer zzz = ret.CreateBufferedCopy (100000);
//ret = zzz.CreateMessage ();
//Console.WriteLine (zzz.CreateMessage ());
return ret;
}
object ReadContent(XmlReader reader)
{
reader.MoveToContent();
if (reader.NodeType != XmlNodeType.Element)
{
throw new XmlException(String.Format("Node type {0} is not expected as a WS-Security message header content.", reader.NodeType));
}
switch (reader.NamespaceURI)
{
case Constants.WsuNamespace:
switch (reader.LocalName)
{
case "Timestamp":
return(ReadTimestamp(reader));
}
break;
//case Constants.WstNamespace:
case Constants.Wss11Namespace:
if (reader.LocalName == "SignatureConfirmation")
{
return(ReadSignatureConfirmation(reader, doc));
}
break;
case SignedXml.XmlDsigNamespaceUrl:
switch (reader.LocalName)
{
case "Signature":
WSSignedXml sxml = new WSSignedXml(doc);
sxml.Signature.LoadXml((XmlElement)doc.ReadNode(reader));
UpdateSignatureKeyInfo(sxml.Signature, doc, serializer);
return(sxml);
}
break;
case EncryptedXml.XmlEncNamespaceUrl:
switch (reader.LocalName)
{
case "EncryptedData":
XmlElement el = (XmlElement)doc.ReadNode(reader);
return(CreateEncryptedData(el));
case "ReferenceList":
ReferenceList rl = new ReferenceList();
reader.Read();
for (reader.MoveToContent();
reader.NodeType != XmlNodeType.EndElement;
reader.MoveToContent())
{
switch (reader.LocalName)
{
case "DataReference":
DataReference dref = new DataReference();
dref.LoadXml((XmlElement)doc.ReadNode(reader));
rl.Add(dref);
continue;
case "KeyReference":
KeyReference kref = new KeyReference();
kref.LoadXml((XmlElement)doc.ReadNode(reader));
rl.Add(kref);
continue;
}
throw new XmlException(String.Format("Unexpected {2} node '{0}' in namespace '{1}' in ReferenceList.", reader.Name, reader.NamespaceURI, reader.NodeType));
}
reader.ReadEndElement();
return(rl);
}
break;
}
// SecurityTokenReference will be handled here.
// This order (Token->KeyIdentifierClause) is
// important because WrappedKey could be read
// in both context (but must be a token here).
if (serializer.CanReadToken(reader))
{
return(serializer.ReadToken(reader, resolver));
}
else if (serializer.CanReadKeyIdentifierClause(reader))
{
return(serializer.ReadKeyIdentifierClause(reader));
}
else
{
throw new XmlException(String.Format("Unexpected element '{0}' in namespace '{1}' as a WS-Security message header content.", reader.Name, reader.NamespaceURI));
}
}
