public override bool VerifyRawSignature(SignatureAndHashAlgorithm algorithm, byte[] sigBytes,
AsymmetricKeyParameter publicKey, byte[] hash)
{
ISigner signer = MakeSigner(algorithm, true, false, publicKey);
signer.BlockUpdate(hash, 0, hash.Length);
return signer.VerifySignature(sigBytes);
}
public DigitallySigned(SignatureAndHashAlgorithm algorithm, byte[] signature)
{
if (signature == null)
throw new ArgumentNullException("signature");
this.mAlgorithm = algorithm;
this.mSignature = signature;
}
protected virtual ISigner InitVerifyer(TlsSigner tlsSigner, SignatureAndHashAlgorithm algorithm,
SecurityParameters securityParameters)
{
ISigner signer = tlsSigner.CreateVerifyer(algorithm, this.mServerPublicKey);
signer.BlockUpdate(securityParameters.clientRandom, 0, securityParameters.clientRandom.Length);
signer.BlockUpdate(securityParameters.serverRandom, 0, securityParameters.serverRandom.Length);
return signer;
}
public override byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm,
AsymmetricKeyParameter privateKey, byte[] hash)
{
ISigner signer = MakeSigner(algorithm, true, true,
new ParametersWithRandom(privateKey, this.mContext.SecureRandom));
signer.BlockUpdate(hash, 0, hash.Length);
return signer.GenerateSignature();
}
public override bool VerifyRawSignature(SignatureAndHashAlgorithm algorithm, byte[] sigBytes,
AsymmetricKeyParameter publicKey, byte[] hash)
{
ISigner signer = MakeSigner(algorithm, true, false, publicKey);
if (algorithm == null)
{
// Note: Only use the SHA1 part of the (MD5/SHA1) hash
signer.BlockUpdate(hash, 16, 20);
}
else
{
signer.BlockUpdate(hash, 0, hash.Length);
}
return signer.VerifySignature(sigBytes);
}
public override byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm,
AsymmetricKeyParameter privateKey, byte[] hash)
{
ISigner signer = MakeSigner(algorithm, true, true,
new ParametersWithRandom(privateKey, this.mContext.SecureRandom));
if (algorithm == null)
{
// Note: Only use the SHA1 part of the (MD5/SHA1) hash
signer.BlockUpdate(hash, 16, 20);
}
else
{
signer.BlockUpdate(hash, 0, hash.Length);
}
return signer.GenerateSignature();
}
protected virtual ISigner MakeSigner(SignatureAndHashAlgorithm algorithm, bool raw, bool forSigning,
ICipherParameters cp)
{
if ((algorithm != null) != TlsUtilities.IsTlsV12(mContext))
throw new InvalidOperationException();
if (algorithm != null && algorithm.Signature != SignatureAlgorithm)
throw new InvalidOperationException();
byte hashAlgorithm = algorithm == null ? HashAlgorithm.sha1 : algorithm.Hash;
IDigest d = raw ? new NullDigest() : TlsUtilities.CreateHash(hashAlgorithm);
ISigner s = new DsaDigestSigner(CreateDsaImpl(hashAlgorithm), d);
s.Init(forSigning, MakeInitParameters(forSigning, cp));
return s;
}
protected virtual ISigner MakeSigner(SignatureAndHashAlgorithm algorithm, bool raw, bool forSigning,
ICipherParameters cp)
{
if ((algorithm != null) != TlsUtilities.IsTlsV12(mContext))
throw new InvalidOperationException();
if (algorithm != null && algorithm.Signature != SignatureAlgorithm.rsa)
throw new InvalidOperationException();
IDigest d;
if (raw)
{
d = new NullDigest();
}
else if (algorithm == null)
{
d = new CombinedHash();
}
else
{
d = TlsUtilities.CreateHash(algorithm.Hash);
}
ISigner s;
if (algorithm != null)
{
/*
* RFC 5246 4.7. In RSA signing, the opaque vector contains the signature generated
* using the RSASSA-PKCS1-v1_5 signature scheme defined in [PKCS1].
*/
s = new RsaDigestSigner(d, TlsUtilities.GetOidForHashAlgorithm(algorithm.Hash));
}
else
{
/*
* RFC 5246 4.7. Note that earlier versions of TLS used a different RSA signature scheme
* that did not include a DigestInfo encoding.
*/
s = new GenericSigner(CreateRsaImpl(), d);
}
s.Init(forSigning, cp);
return s;
}
public DefaultTlsSignerCredentials(TlsContext context, Certificate certificate, AsymmetricKeyParameter privateKey,
SignatureAndHashAlgorithm signatureAndHashAlgorithm)
{
if (certificate == null)
throw new ArgumentNullException("certificate");
if (certificate.IsEmpty)
throw new ArgumentException("cannot be empty", "clientCertificate");
if (privateKey == null)
throw new ArgumentNullException("privateKey");
if (!privateKey.IsPrivate)
throw new ArgumentException("must be private", "privateKey");
if (TlsUtilities.IsTlsV12(context) && signatureAndHashAlgorithm == null)
throw new ArgumentException("cannot be null for (D)TLS 1.2+", "signatureAndHashAlgorithm");
if (privateKey is RsaKeyParameters)
{
mSigner = new TlsRsaSigner();
}
else if (privateKey is DsaPrivateKeyParameters)
{
mSigner = new TlsDssSigner();
}
else if (privateKey is ECPrivateKeyParameters)
{
mSigner = new TlsECDsaSigner();
}
else
{
throw new ArgumentException("type not supported: " + privateKey.GetType().FullName, "privateKey");
}
this.mSigner.Init(context);
this.mContext = context;
this.mCertificate = certificate;
this.mPrivateKey = privateKey;
this.mSignatureAndHashAlgorithm = signatureAndHashAlgorithm;
}
public override byte[] GenerateServerKeyExchange()
{
if (this.mDHParameters == null)
{
throw new TlsFatalAlert(AlertDescription.internal_error);
}
DigestInputBuffer buf = new DigestInputBuffer();
this.mDHAgreePrivateKey = TlsDHUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom,
this.mDHParameters, buf);
/*
* RFC 5246 4.7. digitally-signed element needs SignatureAndHashAlgorithm from TLS 1.2
*/
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(
mContext, mServerCredentials);
IDigest d = TlsUtilities.CreateHash(signatureAndHashAlgorithm);
SecurityParameters securityParameters = mContext.SecurityParameters;
d.BlockUpdate(securityParameters.clientRandom, 0, securityParameters.clientRandom.Length);
d.BlockUpdate(securityParameters.serverRandom, 0, securityParameters.serverRandom.Length);
buf.UpdateDigest(d);
byte[] hash = DigestUtilities.DoFinal(d);
byte[] signature = mServerCredentials.GenerateCertificateSignature(hash);
DigitallySigned signed_params = new DigitallySigned(signatureAndHashAlgorithm, signature);
signed_params.Encode(buf);
return(buf.ToArray());
}
public override byte[] GenerateServerKeyExchange()
{
this.mSrpServer.Init(this.mSrpGroup, this.mSrpVerifier, TlsUtilities.CreateHash(2), this.mContext.SecureRandom);
BigInteger b = this.mSrpServer.GenerateServerCredentials();
ServerSrpParams serverSrpParams = new ServerSrpParams(this.mSrpGroup.N, this.mSrpGroup.G, this.mSrpSalt, b);
DigestInputBuffer digestInputBuffer = new DigestInputBuffer();
serverSrpParams.Encode(digestInputBuffer);
if (this.mServerCredentials != null)
{
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(this.mContext, this.mServerCredentials);
IDigest digest = TlsUtilities.CreateHash(signatureAndHashAlgorithm);
SecurityParameters securityParameters = this.mContext.SecurityParameters;
digest.BlockUpdate(securityParameters.clientRandom, 0, securityParameters.clientRandom.Length);
digest.BlockUpdate(securityParameters.serverRandom, 0, securityParameters.serverRandom.Length);
digestInputBuffer.UpdateDigest(digest);
byte[] array = new byte[digest.GetDigestSize()];
digest.DoFinal(array, 0);
byte[] signature = this.mServerCredentials.GenerateCertificateSignature(array);
DigitallySigned digitallySigned = new DigitallySigned(signatureAndHashAlgorithm, signature);
digitallySigned.Encode(digestInputBuffer);
}
return(digestInputBuffer.ToArray());
}
public override ISigner CreateVerifyer(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter publicKey) => this.MakeSigner(algorithm, false, false, publicKey);
public override ISigner CreateVerifyer(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter publicKey)
{
return MakeSigner(algorithm, false, false, publicKey);
}
public override ISigner CreateSigner(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter privateKey)
{
return MakeSigner(algorithm, false, true, new ParametersWithRandom(privateKey, this.mContext.SecureRandom));
}
protected override void HandleHandshakeMessage(byte type, byte[] data)
{
MemoryStream buf = new MemoryStream(data, false);
if (base.mResumedSession)
{
if ((type != 20) || (base.mConnectionState != 2))
{
throw new TlsFatalAlert(10);
}
this.ProcessFinishedMessage(buf);
base.mConnectionState = 15;
this.SendFinishedMessage();
base.mConnectionState = 13;
base.mConnectionState = 0x10;
this.CompleteHandshake();
}
else
{
switch (type)
{
case 0:
TlsProtocol.AssertEmpty(buf);
if (base.mConnectionState == 0x10)
{
this.RefuseRenegotiation();
}
return;
case 2:
if (base.mConnectionState != 1)
{
throw new TlsFatalAlert(10);
}
this.ReceiveServerHelloMessage(buf);
base.mConnectionState = 2;
base.mRecordStream.NotifyHelloComplete();
this.ApplyMaxFragmentLengthExtension();
if (base.mResumedSession)
{
base.mSecurityParameters.masterSecret = Arrays.Clone(base.mSessionParameters.MasterSecret);
base.mRecordStream.SetPendingConnectionState(this.Peer.GetCompression(), this.Peer.GetCipher());
this.SendChangeCipherSpecMessage();
}
else
{
this.InvalidateSession();
if (this.mSelectedSessionID.Length > 0)
{
base.mTlsSession = new TlsSessionImpl(this.mSelectedSessionID, null);
}
}
return;
case 4:
if (base.mConnectionState != 13)
{
throw new TlsFatalAlert(10);
}
if (!base.mExpectSessionTicket)
{
throw new TlsFatalAlert(10);
}
this.InvalidateSession();
this.ReceiveNewSessionTicketMessage(buf);
base.mConnectionState = 14;
return;
case 11:
switch (base.mConnectionState)
{
case 2:
case 3:
if (base.mConnectionState == 2)
{
this.HandleSupplementalData(null);
}
base.mPeerCertificate = Certificate.Parse(buf);
TlsProtocol.AssertEmpty(buf);
if ((base.mPeerCertificate == null) || base.mPeerCertificate.IsEmpty)
{
base.mAllowCertificateStatus = false;
}
this.mKeyExchange.ProcessServerCertificate(base.mPeerCertificate);
this.mAuthentication = this.mTlsClient.GetAuthentication();
this.mAuthentication.NotifyServerCertificate(base.mPeerCertificate);
base.mConnectionState = 4;
return;
}
throw new TlsFatalAlert(10);
case 12:
switch (base.mConnectionState)
{
case 2:
case 3:
case 4:
case 5:
if (base.mConnectionState < 3)
{
this.HandleSupplementalData(null);
}
if (base.mConnectionState < 4)
{
this.mKeyExchange.SkipServerCredentials();
this.mAuthentication = null;
}
this.mKeyExchange.ProcessServerKeyExchange(buf);
TlsProtocol.AssertEmpty(buf);
base.mConnectionState = 6;
return;
}
throw new TlsFatalAlert(10);
case 13:
switch (base.mConnectionState)
{
case 4:
case 5:
case 6:
if (base.mConnectionState != 6)
{
this.mKeyExchange.SkipServerKeyExchange();
}
if (this.mAuthentication == null)
{
throw new TlsFatalAlert(40);
}
this.mCertificateRequest = CertificateRequest.Parse(this.Context, buf);
TlsProtocol.AssertEmpty(buf);
this.mKeyExchange.ValidateCertificateRequest(this.mCertificateRequest);
TlsUtilities.TrackHashAlgorithms(base.mRecordStream.HandshakeHash, this.mCertificateRequest.SupportedSignatureAlgorithms);
base.mConnectionState = 7;
return;
}
throw new TlsFatalAlert(10);
case 14:
switch (base.mConnectionState)
{
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
{
if (base.mConnectionState < 3)
{
this.HandleSupplementalData(null);
}
if (base.mConnectionState < 4)
{
this.mKeyExchange.SkipServerCredentials();
this.mAuthentication = null;
}
if (base.mConnectionState < 6)
{
this.mKeyExchange.SkipServerKeyExchange();
}
TlsProtocol.AssertEmpty(buf);
base.mConnectionState = 8;
base.mRecordStream.HandshakeHash.SealHashAlgorithms();
IList clientSupplementalData = this.mTlsClient.GetClientSupplementalData();
if (clientSupplementalData != null)
{
this.SendSupplementalDataMessage(clientSupplementalData);
}
base.mConnectionState = 9;
TlsCredentials clientCredentials = null;
if (this.mCertificateRequest == null)
{
this.mKeyExchange.SkipClientCredentials();
}
else
{
clientCredentials = this.mAuthentication.GetClientCredentials(this.Context, this.mCertificateRequest);
if (clientCredentials == null)
{
this.mKeyExchange.SkipClientCredentials();
this.SendCertificateMessage(Certificate.EmptyChain);
}
else
{
this.mKeyExchange.ProcessClientCredentials(clientCredentials);
this.SendCertificateMessage(clientCredentials.Certificate);
}
}
base.mConnectionState = 10;
this.SendClientKeyExchangeMessage();
base.mConnectionState = 11;
TlsHandshakeHash handshakeHash = base.mRecordStream.PrepareToFinish();
base.mSecurityParameters.sessionHash = TlsProtocol.GetCurrentPrfHash(this.Context, handshakeHash, null);
TlsProtocol.EstablishMasterSecret(this.Context, this.mKeyExchange);
base.mRecordStream.SetPendingConnectionState(this.Peer.GetCompression(), this.Peer.GetCipher());
if ((clientCredentials != null) && (clientCredentials is TlsSignerCredentials))
{
byte[] sessionHash;
TlsSignerCredentials signerCredentials = (TlsSignerCredentials)clientCredentials;
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(this.Context, signerCredentials);
if (signatureAndHashAlgorithm == null)
{
sessionHash = base.mSecurityParameters.SessionHash;
}
else
{
sessionHash = handshakeHash.GetFinalHash(signatureAndHashAlgorithm.Hash);
}
byte[] signature = signerCredentials.GenerateCertificateSignature(sessionHash);
DigitallySigned certificateVerify = new DigitallySigned(signatureAndHashAlgorithm, signature);
this.SendCertificateVerifyMessage(certificateVerify);
base.mConnectionState = 12;
}
this.SendChangeCipherSpecMessage();
this.SendFinishedMessage();
base.mConnectionState = 13;
return;
}
}
throw new TlsFatalAlert(40);
case 20:
switch (base.mConnectionState)
{
case 13:
case 14:
if ((base.mConnectionState == 13) && base.mExpectSessionTicket)
{
throw new TlsFatalAlert(10);
}
this.ProcessFinishedMessage(buf);
base.mConnectionState = 15;
base.mConnectionState = 0x10;
this.CompleteHandshake();
return;
}
throw new TlsFatalAlert(10);
case 0x16:
if (base.mConnectionState != 4)
{
throw new TlsFatalAlert(10);
}
if (!base.mAllowCertificateStatus)
{
throw new TlsFatalAlert(10);
}
this.mCertificateStatus = CertificateStatus.Parse(buf);
TlsProtocol.AssertEmpty(buf);
base.mConnectionState = 5;
return;
case 0x17:
if (base.mConnectionState != 2)
{
throw new TlsFatalAlert(10);
}
this.HandleSupplementalData(TlsProtocol.ReadSupplementalDataMessage(buf));
return;
}
throw new TlsFatalAlert(10);
}
}
protected override void HandleHandshakeMessage(byte type, byte[] data)
{
//IL_0002: Unknown result type (might be due to invalid IL or missing references)
//IL_0008: Expected O, but got Unknown
MemoryStream val = new MemoryStream(data, false);
if (mResumedSession)
{
if (type != 20 || mConnectionState != 2)
{
throw new TlsFatalAlert(10);
}
ProcessFinishedMessage(val);
mConnectionState = 15;
SendFinishedMessage();
mConnectionState = 13;
mConnectionState = 16;
CompleteHandshake();
return;
}
switch (type)
{
case 11:
switch (mConnectionState)
{
case 2:
case 3:
if (mConnectionState == 2)
{
HandleSupplementalData(null);
}
mPeerCertificate = Certificate.Parse((Stream)(object)val);
TlsProtocol.AssertEmpty(val);
if (mPeerCertificate == null || mPeerCertificate.IsEmpty)
{
mAllowCertificateStatus = false;
}
mKeyExchange.ProcessServerCertificate(mPeerCertificate);
mAuthentication = mTlsClient.GetAuthentication();
mAuthentication.NotifyServerCertificate(mPeerCertificate);
mConnectionState = 4;
break;
default:
throw new TlsFatalAlert(10);
}
break;
case 22:
{
short num = mConnectionState;
if (num == 4)
{
if (!mAllowCertificateStatus)
{
throw new TlsFatalAlert(10);
}
mCertificateStatus = CertificateStatus.Parse((Stream)(object)val);
TlsProtocol.AssertEmpty(val);
mConnectionState = 5;
break;
}
throw new TlsFatalAlert(10);
}
case 20:
switch (mConnectionState)
{
case 13:
case 14:
if (mConnectionState == 13 && mExpectSessionTicket)
{
throw new TlsFatalAlert(10);
}
ProcessFinishedMessage(val);
mConnectionState = 15;
mConnectionState = 16;
CompleteHandshake();
break;
default:
throw new TlsFatalAlert(10);
}
break;
case 2:
{
short num = mConnectionState;
if (num == 1)
{
ReceiveServerHelloMessage(val);
mConnectionState = 2;
mRecordStream.NotifyHelloComplete();
ApplyMaxFragmentLengthExtension();
if (mResumedSession)
{
mSecurityParameters.masterSecret = Arrays.Clone(mSessionParameters.MasterSecret);
mRecordStream.SetPendingConnectionState(Peer.GetCompression(), Peer.GetCipher());
SendChangeCipherSpecMessage();
break;
}
InvalidateSession();
if (mSelectedSessionID.Length > 0)
{
mTlsSession = new TlsSessionImpl(mSelectedSessionID, null);
}
break;
}
throw new TlsFatalAlert(10);
}
case 23:
{
short num = mConnectionState;
if (num == 2)
{
HandleSupplementalData(TlsProtocol.ReadSupplementalDataMessage(val));
break;
}
throw new TlsFatalAlert(10);
}
case 14:
switch (mConnectionState)
{
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
{
if (mConnectionState < 3)
{
HandleSupplementalData(null);
}
if (mConnectionState < 4)
{
mKeyExchange.SkipServerCredentials();
mAuthentication = null;
}
if (mConnectionState < 6)
{
mKeyExchange.SkipServerKeyExchange();
}
TlsProtocol.AssertEmpty(val);
mConnectionState = 8;
mRecordStream.HandshakeHash.SealHashAlgorithms();
global::System.Collections.IList clientSupplementalData = mTlsClient.GetClientSupplementalData();
if (clientSupplementalData != null)
{
SendSupplementalDataMessage(clientSupplementalData);
}
mConnectionState = 9;
TlsCredentials tlsCredentials = null;
if (mCertificateRequest == null)
{
mKeyExchange.SkipClientCredentials();
}
else
{
tlsCredentials = mAuthentication.GetClientCredentials(mCertificateRequest);
if (tlsCredentials == null)
{
mKeyExchange.SkipClientCredentials();
SendCertificateMessage(Certificate.EmptyChain);
}
else
{
mKeyExchange.ProcessClientCredentials(tlsCredentials);
SendCertificateMessage(tlsCredentials.Certificate);
}
}
mConnectionState = 10;
SendClientKeyExchangeMessage();
mConnectionState = 11;
TlsHandshakeHash tlsHandshakeHash = mRecordStream.PrepareToFinish();
mSecurityParameters.sessionHash = TlsProtocol.GetCurrentPrfHash(Context, tlsHandshakeHash, null);
TlsProtocol.EstablishMasterSecret(Context, mKeyExchange);
mRecordStream.SetPendingConnectionState(Peer.GetCompression(), Peer.GetCipher());
if (tlsCredentials != null && tlsCredentials is TlsSignerCredentials)
{
TlsSignerCredentials tlsSignerCredentials = (TlsSignerCredentials)tlsCredentials;
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(Context, tlsSignerCredentials);
byte[] hash = ((signatureAndHashAlgorithm != null) ? tlsHandshakeHash.GetFinalHash(signatureAndHashAlgorithm.Hash) : mSecurityParameters.SessionHash);
byte[] signature = tlsSignerCredentials.GenerateCertificateSignature(hash);
DigitallySigned certificateVerify = new DigitallySigned(signatureAndHashAlgorithm, signature);
SendCertificateVerifyMessage(certificateVerify);
mConnectionState = 12;
}
SendChangeCipherSpecMessage();
SendFinishedMessage();
mConnectionState = 13;
break;
}
default:
throw new TlsFatalAlert(40);
}
break;
case 12:
switch (mConnectionState)
{
case 2:
case 3:
case 4:
case 5:
if (mConnectionState < 3)
{
HandleSupplementalData(null);
}
if (mConnectionState < 4)
{
mKeyExchange.SkipServerCredentials();
mAuthentication = null;
}
mKeyExchange.ProcessServerKeyExchange((Stream)(object)val);
TlsProtocol.AssertEmpty(val);
mConnectionState = 6;
break;
default:
throw new TlsFatalAlert(10);
}
break;
case 13:
switch (mConnectionState)
{
case 4:
case 5:
case 6:
if (mConnectionState != 6)
{
mKeyExchange.SkipServerKeyExchange();
}
if (mAuthentication == null)
{
throw new TlsFatalAlert(40);
}
mCertificateRequest = CertificateRequest.Parse(Context, (Stream)(object)val);
TlsProtocol.AssertEmpty(val);
mKeyExchange.ValidateCertificateRequest(mCertificateRequest);
TlsUtilities.TrackHashAlgorithms(mRecordStream.HandshakeHash, mCertificateRequest.SupportedSignatureAlgorithms);
mConnectionState = 7;
break;
default:
throw new TlsFatalAlert(10);
}
break;
case 4:
{
short num = mConnectionState;
if (num == 13)
{
if (!mExpectSessionTicket)
{
throw new TlsFatalAlert(10);
}
InvalidateSession();
ReceiveNewSessionTicketMessage(val);
mConnectionState = 14;
break;
}
throw new TlsFatalAlert(10);
}
case 0:
TlsProtocol.AssertEmpty(val);
if (mConnectionState == 16)
{
RefuseRenegotiation();
}
break;
default:
throw new TlsFatalAlert(10);
}
}
public override ISigner CreateVerifyer(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter publicKey)
{
return(MakeSigner(algorithm, raw: false, forSigning: false, publicKey));
}
public abstract bool VerifyRawSignature(SignatureAndHashAlgorithm algorithm, byte[] sigBytes,
AsymmetricKeyParameter publicKey, byte[] hash);
public DefaultTlsSignerCredentials(TlsContext context, Certificate certificate, AsymmetricKeyParameter privateKey, SignatureAndHashAlgorithm signatureAndHashAlgorithm)
{
if (certificate == null)
{
throw new ArgumentNullException("certificate");
}
if (certificate.IsEmpty)
{
throw new ArgumentException("cannot be empty", "clientCertificate");
}
if (privateKey == null)
{
throw new ArgumentNullException("privateKey");
}
if (!privateKey.IsPrivate)
{
throw new ArgumentException("must be private", "privateKey");
}
if (TlsUtilities.IsTlsV12(context) && signatureAndHashAlgorithm == null)
{
throw new ArgumentException("cannot be null for (D)TLS 1.2+", "signatureAndHashAlgorithm");
}
if (privateKey is RsaKeyParameters)
{
this.mSigner = new TlsRsaSigner();
}
else if (privateKey is DsaPrivateKeyParameters)
{
this.mSigner = new TlsDssSigner();
}
else
{
if (!(privateKey is ECPrivateKeyParameters))
{
throw new ArgumentException("type not supported: " + privateKey.GetType().FullName, "privateKey");
}
this.mSigner = new TlsECDsaSigner();
}
this.mSigner.Init(context);
this.mContext = context;
this.mCertificate = certificate;
this.mPrivateKey = privateKey;
this.mSignatureAndHashAlgorithm = signatureAndHashAlgorithm;
}
public static byte[] Sign(Org.BouncyCastle.Crypto.AsymmetricKeyParameter privateKey, bool client, Version version, HandshakeInfo handshakeInfo, SignatureHashAlgorithm signatureHashAlgorithm, byte[] hash)
{
TlsSigner signer = null;
switch (signatureHashAlgorithm.Signature)
{
case TSignatureAlgorithm.Anonymous:
break;
case TSignatureAlgorithm.RSA:
signer = new TlsRsaSigner();
break;
case TSignatureAlgorithm.DSA:
signer = new TlsDssSigner();
break;
case TSignatureAlgorithm.ECDSA:
signer = new TlsECDsaSigner();
break;
default:
break;
}
DTLSContext context = new DTLSContext(client, version, handshakeInfo);
Org.BouncyCastle.Crypto.Prng.CryptoApiRandomGenerator randomGenerator = new Org.BouncyCastle.Crypto.Prng.CryptoApiRandomGenerator();
context.SecureRandom = new Org.BouncyCastle.Security.SecureRandom(randomGenerator);
signer.Init(context);
if (TlsUtilities.IsTlsV12(context))
{
SignatureAndHashAlgorithm signatureAndHashAlgorithm = new SignatureAndHashAlgorithm((byte)signatureHashAlgorithm.Hash, (byte)signatureHashAlgorithm.Signature);
return signer.GenerateRawSignature(signatureAndHashAlgorithm, privateKey, hash);
}
else
{
return signer.GenerateRawSignature(privateKey, hash);
}
}
public static IDigest CreateHash(SignatureAndHashAlgorithm signatureAndHashAlgorithm)
{
return signatureAndHashAlgorithm == null
? new CombinedHash()
: CreateHash(signatureAndHashAlgorithm.Hash);
}
internal virtual DtlsTransport ClientHandshake(DtlsClientProtocol.ClientHandshakeState state, DtlsRecordLayer recordLayer)
{
SecurityParameters securityParameters = state.clientContext.SecurityParameters;
DtlsReliableHandshake dtlsReliableHandshake = new DtlsReliableHandshake(state.clientContext, recordLayer);
byte[] array = this.GenerateClientHello(state, state.client);
dtlsReliableHandshake.SendMessage(1, array);
DtlsReliableHandshake.Message message = dtlsReliableHandshake.ReceiveMessage();
while (message.Type == 3)
{
ProtocolVersion protocolVersion = recordLayer.ResetDiscoveredPeerVersion();
ProtocolVersion clientVersion = state.clientContext.ClientVersion;
if (!protocolVersion.IsEqualOrEarlierVersionOf(clientVersion))
{
throw new TlsFatalAlert(47);
}
byte[] cookie = this.ProcessHelloVerifyRequest(state, message.Body);
byte[] body = DtlsClientProtocol.PatchClientHelloWithCookie(array, cookie);
dtlsReliableHandshake.ResetHandshakeMessagesDigest();
dtlsReliableHandshake.SendMessage(1, body);
message = dtlsReliableHandshake.ReceiveMessage();
}
if (message.Type != 2)
{
throw new TlsFatalAlert(10);
}
this.ReportServerVersion(state, recordLayer.DiscoveredPeerVersion);
this.ProcessServerHello(state, message.Body);
dtlsReliableHandshake.NotifyHelloComplete();
DtlsProtocol.ApplyMaxFragmentLengthExtension(recordLayer, securityParameters.maxFragmentLength);
if (state.resumedSession)
{
securityParameters.masterSecret = Arrays.Clone(state.sessionParameters.MasterSecret);
recordLayer.InitPendingEpoch(state.client.GetCipher());
byte[] expected_verify_data = TlsUtilities.CalculateVerifyData(state.clientContext, "server finished", TlsProtocol.GetCurrentPrfHash(state.clientContext, dtlsReliableHandshake.HandshakeHash, null));
this.ProcessFinished(dtlsReliableHandshake.ReceiveMessageBody(20), expected_verify_data);
byte[] body2 = TlsUtilities.CalculateVerifyData(state.clientContext, "client finished", TlsProtocol.GetCurrentPrfHash(state.clientContext, dtlsReliableHandshake.HandshakeHash, null));
dtlsReliableHandshake.SendMessage(20, body2);
dtlsReliableHandshake.Finish();
state.clientContext.SetResumableSession(state.tlsSession);
state.client.NotifyHandshakeComplete();
return(new DtlsTransport(recordLayer));
}
this.InvalidateSession(state);
if (state.selectedSessionID.Length > 0)
{
state.tlsSession = new TlsSessionImpl(state.selectedSessionID, null);
}
message = dtlsReliableHandshake.ReceiveMessage();
if (message.Type == 23)
{
this.ProcessServerSupplementalData(state, message.Body);
message = dtlsReliableHandshake.ReceiveMessage();
}
else
{
state.client.ProcessServerSupplementalData(null);
}
state.keyExchange = state.client.GetKeyExchange();
state.keyExchange.Init(state.clientContext);
Certificate certificate = null;
if (message.Type == 11)
{
certificate = this.ProcessServerCertificate(state, message.Body);
message = dtlsReliableHandshake.ReceiveMessage();
}
else
{
state.keyExchange.SkipServerCredentials();
}
if (certificate == null || certificate.IsEmpty)
{
state.allowCertificateStatus = false;
}
if (message.Type == 22)
{
this.ProcessCertificateStatus(state, message.Body);
message = dtlsReliableHandshake.ReceiveMessage();
}
if (message.Type == 12)
{
this.ProcessServerKeyExchange(state, message.Body);
message = dtlsReliableHandshake.ReceiveMessage();
}
else
{
state.keyExchange.SkipServerKeyExchange();
}
if (message.Type == 13)
{
this.ProcessCertificateRequest(state, message.Body);
TlsUtilities.TrackHashAlgorithms(dtlsReliableHandshake.HandshakeHash, state.certificateRequest.SupportedSignatureAlgorithms);
message = dtlsReliableHandshake.ReceiveMessage();
}
if (message.Type != 14)
{
throw new TlsFatalAlert(10);
}
if (message.Body.Length != 0)
{
throw new TlsFatalAlert(50);
}
dtlsReliableHandshake.HandshakeHash.SealHashAlgorithms();
IList clientSupplementalData = state.client.GetClientSupplementalData();
if (clientSupplementalData != null)
{
byte[] body3 = DtlsProtocol.GenerateSupplementalData(clientSupplementalData);
dtlsReliableHandshake.SendMessage(23, body3);
}
if (state.certificateRequest != null)
{
state.clientCredentials = state.authentication.GetClientCredentials(state.certificateRequest);
Certificate certificate2 = null;
if (state.clientCredentials != null)
{
certificate2 = state.clientCredentials.Certificate;
}
if (certificate2 == null)
{
certificate2 = Certificate.EmptyChain;
}
byte[] body4 = DtlsProtocol.GenerateCertificate(certificate2);
dtlsReliableHandshake.SendMessage(11, body4);
}
if (state.clientCredentials != null)
{
state.keyExchange.ProcessClientCredentials(state.clientCredentials);
}
else
{
state.keyExchange.SkipClientCredentials();
}
byte[] body5 = this.GenerateClientKeyExchange(state);
dtlsReliableHandshake.SendMessage(16, body5);
TlsHandshakeHash tlsHandshakeHash = dtlsReliableHandshake.PrepareToFinish();
securityParameters.sessionHash = TlsProtocol.GetCurrentPrfHash(state.clientContext, tlsHandshakeHash, null);
TlsProtocol.EstablishMasterSecret(state.clientContext, state.keyExchange);
recordLayer.InitPendingEpoch(state.client.GetCipher());
if (state.clientCredentials != null && state.clientCredentials is TlsSignerCredentials)
{
TlsSignerCredentials tlsSignerCredentials = (TlsSignerCredentials)state.clientCredentials;
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(state.clientContext, tlsSignerCredentials);
byte[] hash;
if (signatureAndHashAlgorithm == null)
{
hash = securityParameters.SessionHash;
}
else
{
hash = tlsHandshakeHash.GetFinalHash(signatureAndHashAlgorithm.Hash);
}
byte[] signature = tlsSignerCredentials.GenerateCertificateSignature(hash);
DigitallySigned certificateVerify = new DigitallySigned(signatureAndHashAlgorithm, signature);
byte[] body6 = this.GenerateCertificateVerify(state, certificateVerify);
dtlsReliableHandshake.SendMessage(15, body6);
}
byte[] body7 = TlsUtilities.CalculateVerifyData(state.clientContext, "client finished", TlsProtocol.GetCurrentPrfHash(state.clientContext, dtlsReliableHandshake.HandshakeHash, null));
dtlsReliableHandshake.SendMessage(20, body7);
if (state.expectSessionTicket)
{
message = dtlsReliableHandshake.ReceiveMessage();
if (message.Type != 4)
{
throw new TlsFatalAlert(10);
}
this.ProcessNewSessionTicket(state, message.Body);
}
byte[] expected_verify_data2 = TlsUtilities.CalculateVerifyData(state.clientContext, "server finished", TlsProtocol.GetCurrentPrfHash(state.clientContext, dtlsReliableHandshake.HandshakeHash, null));
this.ProcessFinished(dtlsReliableHandshake.ReceiveMessageBody(20), expected_verify_data2);
dtlsReliableHandshake.Finish();
if (state.tlsSession != null)
{
state.sessionParameters = new SessionParameters.Builder().SetCipherSuite(securityParameters.CipherSuite).SetCompressionAlgorithm(securityParameters.CompressionAlgorithm).SetMasterSecret(securityParameters.MasterSecret).SetPeerCertificate(certificate).SetPskIdentity(securityParameters.PskIdentity).SetSrpIdentity(securityParameters.SrpIdentity).SetServerExtensions(state.serverExtensions).Build();
state.tlsSession = TlsUtilities.ImportSession(state.tlsSession.SessionID, state.sessionParameters);
state.clientContext.SetResumableSession(state.tlsSession);
}
state.client.NotifyHandshakeComplete();
return(new DtlsTransport(recordLayer));
}
public override ISigner CreateSigner(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter privateKey)
{
return MakeSigner(algorithm, false, true, privateKey);
}
public static void VerifySupportedSignatureAlgorithm(IList supportedSignatureAlgorithms, SignatureAndHashAlgorithm signatureAlgorithm)
{
if (supportedSignatureAlgorithms == null)
throw new ArgumentNullException("supportedSignatureAlgorithms");
if (supportedSignatureAlgorithms.Count < 1 || supportedSignatureAlgorithms.Count >= (1 << 15))
throw new ArgumentException("must have length from 1 to (2^15 - 1)", "supportedSignatureAlgorithms");
if (signatureAlgorithm == null)
throw new ArgumentNullException("signatureAlgorithm");
if (signatureAlgorithm.Signature != SignatureAlgorithm.anonymous)
{
foreach (SignatureAndHashAlgorithm entry in supportedSignatureAlgorithms)
{
if (entry.Hash == signatureAlgorithm.Hash && entry.Signature == signatureAlgorithm.Signature)
return;
}
}
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
internal virtual DtlsTransport ClientHandshake(ClientHandshakeState state, DtlsRecordLayer recordLayer)
{
SecurityParameters securityParameters = state.clientContext.SecurityParameters;
DtlsReliableHandshake handshake = new DtlsReliableHandshake(state.clientContext, recordLayer);
byte[] clientHelloBody = GenerateClientHello(state, state.client);
recordLayer.SetWriteVersion(ProtocolVersion.DTLSv10);
handshake.SendMessage(HandshakeType.client_hello, clientHelloBody);
DtlsReliableHandshake.Message serverMessage = handshake.ReceiveMessage();
while (serverMessage.Type == HandshakeType.hello_verify_request)
{
ProtocolVersion recordLayerVersion = recordLayer.ReadVersion;
ProtocolVersion client_version = state.clientContext.ClientVersion;
/*
* RFC 6347 4.2.1 DTLS 1.2 server implementations SHOULD use DTLS version 1.0 regardless of
* the version of TLS that is expected to be negotiated. DTLS 1.2 and 1.0 clients MUST use
* the version solely to indicate packet formatting (which is the same in both DTLS 1.2 and
* 1.0) and not as part of version negotiation.
*/
if (!recordLayerVersion.IsEqualOrEarlierVersionOf(client_version))
{
throw new TlsFatalAlert(AlertDescription.illegal_parameter);
}
recordLayer.ReadVersion = null;
byte[] cookie = ProcessHelloVerifyRequest(state, serverMessage.Body);
byte[] patched = PatchClientHelloWithCookie(clientHelloBody, cookie);
handshake.ResetHandshakeMessagesDigest();
handshake.SendMessage(HandshakeType.client_hello, patched);
serverMessage = handshake.ReceiveMessage();
}
if (serverMessage.Type == HandshakeType.server_hello)
{
ProtocolVersion recordLayerVersion = recordLayer.ReadVersion;
ReportServerVersion(state, recordLayerVersion);
recordLayer.SetWriteVersion(recordLayerVersion);
ProcessServerHello(state, serverMessage.Body);
}
else
{
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
handshake.NotifyHelloComplete();
ApplyMaxFragmentLengthExtension(recordLayer, securityParameters.maxFragmentLength);
if (state.resumedSession)
{
securityParameters.masterSecret = Arrays.Clone(state.sessionParameters.MasterSecret);
recordLayer.InitPendingEpoch(state.client.GetCipher());
// NOTE: Calculated exclusive of the actual Finished message from the server
byte[] resExpectedServerVerifyData = TlsUtilities.CalculateVerifyData(state.clientContext, ExporterLabel.server_finished,
TlsProtocol.GetCurrentPrfHash(state.clientContext, handshake.HandshakeHash, null));
ProcessFinished(handshake.ReceiveMessageBody(HandshakeType.finished), resExpectedServerVerifyData);
// NOTE: Calculated exclusive of the Finished message itself
byte[] resClientVerifyData = TlsUtilities.CalculateVerifyData(state.clientContext, ExporterLabel.client_finished,
TlsProtocol.GetCurrentPrfHash(state.clientContext, handshake.HandshakeHash, null));
handshake.SendMessage(HandshakeType.finished, resClientVerifyData);
handshake.Finish();
state.clientContext.SetResumableSession(state.tlsSession);
state.client.NotifyHandshakeComplete();
return(new DtlsTransport(recordLayer));
}
InvalidateSession(state);
if (state.selectedSessionID.Length > 0)
{
state.tlsSession = new TlsSessionImpl(state.selectedSessionID, null);
}
serverMessage = handshake.ReceiveMessage();
if (serverMessage.Type == HandshakeType.supplemental_data)
{
ProcessServerSupplementalData(state, serverMessage.Body);
serverMessage = handshake.ReceiveMessage();
}
else
{
state.client.ProcessServerSupplementalData(null);
}
state.keyExchange = state.client.GetKeyExchange();
state.keyExchange.Init(state.clientContext);
Certificate serverCertificate = null;
if (serverMessage.Type == HandshakeType.certificate)
{
serverCertificate = ProcessServerCertificate(state, serverMessage.Body);
serverMessage = handshake.ReceiveMessage();
}
else
{
// Okay, Certificate is optional
state.keyExchange.SkipServerCredentials();
}
// TODO[RFC 3546] Check whether empty certificates is possible, allowed, or excludes CertificateStatus
if (serverCertificate == null || serverCertificate.IsEmpty)
{
state.allowCertificateStatus = false;
}
if (serverMessage.Type == HandshakeType.certificate_status)
{
ProcessCertificateStatus(state, serverMessage.Body);
serverMessage = handshake.ReceiveMessage();
}
else
{
// Okay, CertificateStatus is optional
}
if (serverMessage.Type == HandshakeType.server_key_exchange)
{
ProcessServerKeyExchange(state, serverMessage.Body);
serverMessage = handshake.ReceiveMessage();
}
else
{
// Okay, ServerKeyExchange is optional
state.keyExchange.SkipServerKeyExchange();
}
if (serverMessage.Type == HandshakeType.certificate_request)
{
ProcessCertificateRequest(state, serverMessage.Body);
/*
* TODO Give the client a chance to immediately select the CertificateVerify hash
* algorithm here to avoid tracking the other hash algorithms unnecessarily?
*/
TlsUtilities.TrackHashAlgorithms(handshake.HandshakeHash,
state.certificateRequest.SupportedSignatureAlgorithms);
serverMessage = handshake.ReceiveMessage();
}
else
{
// Okay, CertificateRequest is optional
}
if (serverMessage.Type == HandshakeType.server_hello_done)
{
if (serverMessage.Body.Length != 0)
{
throw new TlsFatalAlert(AlertDescription.decode_error);
}
}
else
{
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
handshake.HandshakeHash.SealHashAlgorithms();
IList clientSupplementalData = state.client.GetClientSupplementalData();
if (clientSupplementalData != null)
{
byte[] supplementalDataBody = GenerateSupplementalData(clientSupplementalData);
handshake.SendMessage(HandshakeType.supplemental_data, supplementalDataBody);
}
if (state.certificateRequest != null)
{
state.clientCredentials = state.authentication.GetClientCredentials(state.certificateRequest);
/*
* RFC 5246 If no suitable certificate is available, the client MUST send a certificate
* message containing no certificates.
*
* NOTE: In previous RFCs, this was SHOULD instead of MUST.
*/
Certificate clientCertificate = null;
if (state.clientCredentials != null)
{
clientCertificate = state.clientCredentials.Certificate;
}
if (clientCertificate == null)
{
clientCertificate = Certificate.EmptyChain;
}
byte[] certificateBody = GenerateCertificate(clientCertificate);
handshake.SendMessage(HandshakeType.certificate, certificateBody);
}
if (state.clientCredentials != null)
{
state.keyExchange.ProcessClientCredentials(state.clientCredentials);
}
else
{
state.keyExchange.SkipClientCredentials();
}
byte[] clientKeyExchangeBody = GenerateClientKeyExchange(state);
handshake.SendMessage(HandshakeType.client_key_exchange, clientKeyExchangeBody);
TlsHandshakeHash prepareFinishHash = handshake.PrepareToFinish();
securityParameters.sessionHash = TlsProtocol.GetCurrentPrfHash(state.clientContext, prepareFinishHash, null);
TlsProtocol.EstablishMasterSecret(state.clientContext, state.keyExchange);
recordLayer.InitPendingEpoch(state.client.GetCipher());
if (state.clientCredentials != null && state.clientCredentials is TlsSignerCredentials)
{
TlsSignerCredentials signerCredentials = (TlsSignerCredentials)state.clientCredentials;
/*
* RFC 5246 4.7. digitally-signed element needs SignatureAndHashAlgorithm from TLS 1.2
*/
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(
state.clientContext, signerCredentials);
byte[] hash;
if (signatureAndHashAlgorithm == null)
{
hash = securityParameters.SessionHash;
}
else
{
hash = prepareFinishHash.GetFinalHash(signatureAndHashAlgorithm.Hash);
}
byte[] signature = signerCredentials.GenerateCertificateSignature(hash);
DigitallySigned certificateVerify = new DigitallySigned(signatureAndHashAlgorithm, signature);
byte[] certificateVerifyBody = GenerateCertificateVerify(state, certificateVerify);
handshake.SendMessage(HandshakeType.certificate_verify, certificateVerifyBody);
}
// NOTE: Calculated exclusive of the Finished message itself
byte[] clientVerifyData = TlsUtilities.CalculateVerifyData(state.clientContext, ExporterLabel.client_finished,
TlsProtocol.GetCurrentPrfHash(state.clientContext, handshake.HandshakeHash, null));
handshake.SendMessage(HandshakeType.finished, clientVerifyData);
if (state.expectSessionTicket)
{
serverMessage = handshake.ReceiveMessage();
if (serverMessage.Type == HandshakeType.session_ticket)
{
ProcessNewSessionTicket(state, serverMessage.Body);
}
else
{
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
}
// NOTE: Calculated exclusive of the actual Finished message from the server
byte[] expectedServerVerifyData = TlsUtilities.CalculateVerifyData(state.clientContext, ExporterLabel.server_finished,
TlsProtocol.GetCurrentPrfHash(state.clientContext, handshake.HandshakeHash, null));
ProcessFinished(handshake.ReceiveMessageBody(HandshakeType.finished), expectedServerVerifyData);
handshake.Finish();
if (state.tlsSession != null)
{
state.sessionParameters = new SessionParameters.Builder()
.SetCipherSuite(securityParameters.CipherSuite)
.SetCompressionAlgorithm(securityParameters.CompressionAlgorithm)
.SetMasterSecret(securityParameters.MasterSecret)
.SetPeerCertificate(serverCertificate)
.SetPskIdentity(securityParameters.PskIdentity)
.SetSrpIdentity(securityParameters.SrpIdentity)
// TODO Consider filtering extensions that aren't relevant to resumed sessions
.SetServerExtensions(state.serverExtensions)
.Build();
state.tlsSession = TlsUtilities.ImportSession(state.tlsSession.SessionID, state.sessionParameters);
state.clientContext.SetResumableSession(state.tlsSession);
}
state.client.NotifyHandshakeComplete();
return(new DtlsTransport(recordLayer));
}
public override ISigner CreateSigner(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter privateKey) => this.MakeSigner(algorithm, false, true, new ParametersWithRandom(privateKey, base.mContext.SecureRandom));
public override ISigner CreateSigner(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter privateKey)
{
return(MakeSigner(algorithm, false, true, privateKey));
}
protected override void HandleHandshakeMessage(byte type, byte[] data)
{
MemoryStream buf = new MemoryStream(data, false);
if (this.mResumedSession)
{
if (type != HandshakeType.finished || this.mConnectionState != CS_SERVER_HELLO)
{
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
ProcessFinishedMessage(buf);
this.mConnectionState = CS_SERVER_FINISHED;
SendFinishedMessage();
this.mConnectionState = CS_CLIENT_FINISHED;
this.mConnectionState = CS_END;
return;
}
switch (type)
{
case HandshakeType.certificate:
{
switch (this.mConnectionState)
{
case CS_SERVER_HELLO:
case CS_SERVER_SUPPLEMENTAL_DATA:
{
if (this.mConnectionState == CS_SERVER_HELLO)
{
HandleSupplementalData(null);
}
// Parse the Certificate message and Send to cipher suite
this.mPeerCertificate = Certificate.Parse(buf);
AssertEmpty(buf);
// TODO[RFC 3546] Check whether empty certificates is possible, allowed, or excludes CertificateStatus
if (this.mPeerCertificate == null || this.mPeerCertificate.IsEmpty)
{
this.mAllowCertificateStatus = false;
}
this.mKeyExchange.ProcessServerCertificate(this.mPeerCertificate);
this.mAuthentication = mTlsClient.GetAuthentication();
this.mAuthentication.NotifyServerCertificate(this.mPeerCertificate);
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
this.mConnectionState = CS_SERVER_CERTIFICATE;
break;
}
case HandshakeType.certificate_status:
{
switch (this.mConnectionState)
{
case CS_SERVER_CERTIFICATE:
{
if (!this.mAllowCertificateStatus)
{
/*
* RFC 3546 3.6. If a server returns a "CertificateStatus" message, then the
* server MUST have included an extension of type "status_request" with empty
* "extension_data" in the extended server hello..
*/
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
this.mCertificateStatus = CertificateStatus.Parse(buf);
AssertEmpty(buf);
// TODO[RFC 3546] Figure out how to provide this to the client/authentication.
this.mConnectionState = CS_CERTIFICATE_STATUS;
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
break;
}
case HandshakeType.finished:
{
switch (this.mConnectionState)
{
case CS_CLIENT_FINISHED:
case CS_SERVER_SESSION_TICKET:
{
if (this.mConnectionState == CS_CLIENT_FINISHED && this.mExpectSessionTicket)
{
/*
* RFC 5077 3.3. This message MUST be sent if the server included a
* SessionTicket extension in the ServerHello.
*/
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
ProcessFinishedMessage(buf);
this.mConnectionState = CS_SERVER_FINISHED;
this.mConnectionState = CS_END;
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
break;
}
case HandshakeType.server_hello:
{
switch (this.mConnectionState)
{
case CS_CLIENT_HELLO:
{
ReceiveServerHelloMessage(buf);
this.mConnectionState = CS_SERVER_HELLO;
this.mRecordStream.NotifyHelloComplete();
ApplyMaxFragmentLengthExtension();
if (this.mResumedSession)
{
this.mSecurityParameters.masterSecret = Arrays.Clone(this.mSessionParameters.MasterSecret);
this.mRecordStream.SetPendingConnectionState(Peer.GetCompression(), Peer.GetCipher());
SendChangeCipherSpecMessage();
}
else
{
InvalidateSession();
if (this.mSelectedSessionID.Length > 0)
{
this.mTlsSession = new TlsSessionImpl(this.mSelectedSessionID, null);
}
}
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
break;
}
case HandshakeType.supplemental_data:
{
switch (this.mConnectionState)
{
case CS_SERVER_HELLO:
{
HandleSupplementalData(ReadSupplementalDataMessage(buf));
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
break;
}
case HandshakeType.server_hello_done:
{
switch (this.mConnectionState)
{
case CS_SERVER_HELLO:
case CS_SERVER_SUPPLEMENTAL_DATA:
case CS_SERVER_CERTIFICATE:
case CS_CERTIFICATE_STATUS:
case CS_SERVER_KEY_EXCHANGE:
case CS_CERTIFICATE_REQUEST:
{
if (mConnectionState < CS_SERVER_SUPPLEMENTAL_DATA)
{
HandleSupplementalData(null);
}
if (mConnectionState < CS_SERVER_CERTIFICATE)
{
// There was no server certificate message; check it's OK
this.mKeyExchange.SkipServerCredentials();
this.mAuthentication = null;
}
if (mConnectionState < CS_SERVER_KEY_EXCHANGE)
{
// There was no server key exchange message; check it's OK
this.mKeyExchange.SkipServerKeyExchange();
}
AssertEmpty(buf);
this.mConnectionState = CS_SERVER_HELLO_DONE;
this.mRecordStream.HandshakeHash.SealHashAlgorithms();
IList clientSupplementalData = mTlsClient.GetClientSupplementalData();
if (clientSupplementalData != null)
{
SendSupplementalDataMessage(clientSupplementalData);
}
this.mConnectionState = CS_CLIENT_SUPPLEMENTAL_DATA;
TlsCredentials clientCreds = null;
if (mCertificateRequest == null)
{
this.mKeyExchange.SkipClientCredentials();
}
else
{
clientCreds = this.mAuthentication.GetClientCredentials(this.Context, mCertificateRequest);
if (clientCreds == null)
{
this.mKeyExchange.SkipClientCredentials();
/*
* RFC 5246 If no suitable certificate is available, the client MUST Send a
* certificate message containing no certificates.
*
* NOTE: In previous RFCs, this was SHOULD instead of MUST.
*/
SendCertificateMessage(Certificate.EmptyChain);
}
else
{
this.mKeyExchange.ProcessClientCredentials(clientCreds);
SendCertificateMessage(clientCreds.Certificate);
}
}
this.mConnectionState = CS_CLIENT_CERTIFICATE;
/*
* Send the client key exchange message, depending on the key exchange we are using
* in our CipherSuite.
*/
SendClientKeyExchangeMessage();
this.mConnectionState = CS_CLIENT_KEY_EXCHANGE;
TlsHandshakeHash prepareFinishHash = mRecordStream.PrepareToFinish();
this.mSecurityParameters.sessionHash = GetCurrentPrfHash(Context, prepareFinishHash, null);
EstablishMasterSecret(Context, mKeyExchange);
mRecordStream.SetPendingConnectionState(Peer.GetCompression(), Peer.GetCipher());
if (clientCreds != null && clientCreds is TlsSignerCredentials)
{
TlsSignerCredentials signerCredentials = (TlsSignerCredentials)clientCreds;
/*
* RFC 5246 4.7. digitally-signed element needs SignatureAndHashAlgorithm from TLS 1.2
*/
SignatureAndHashAlgorithm signatureAndHashAlgorithm = TlsUtilities.GetSignatureAndHashAlgorithm(
Context, signerCredentials);
byte[] hash;
if (signatureAndHashAlgorithm == null)
{
hash = mSecurityParameters.SessionHash;
}
else
{
hash = prepareFinishHash.GetFinalHash(signatureAndHashAlgorithm.Hash);
}
byte[] signature = signerCredentials.GenerateCertificateSignature(hash);
DigitallySigned certificateVerify = new DigitallySigned(signatureAndHashAlgorithm, signature);
SendCertificateVerifyMessage(certificateVerify);
this.mConnectionState = CS_CERTIFICATE_VERIFY;
}
SendChangeCipherSpecMessage();
SendFinishedMessage();
break;
}
default:
throw new TlsFatalAlert(AlertDescription.handshake_failure);
}
this.mConnectionState = CS_CLIENT_FINISHED;
break;
}
case HandshakeType.server_key_exchange:
{
switch (this.mConnectionState)
{
case CS_SERVER_HELLO:
case CS_SERVER_SUPPLEMENTAL_DATA:
case CS_SERVER_CERTIFICATE:
case CS_CERTIFICATE_STATUS:
{
if (mConnectionState < CS_SERVER_SUPPLEMENTAL_DATA)
{
HandleSupplementalData(null);
}
if (mConnectionState < CS_SERVER_CERTIFICATE)
{
// There was no server certificate message; check it's OK
this.mKeyExchange.SkipServerCredentials();
this.mAuthentication = null;
}
this.mKeyExchange.ProcessServerKeyExchange(buf);
AssertEmpty(buf);
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
this.mConnectionState = CS_SERVER_KEY_EXCHANGE;
break;
}
case HandshakeType.certificate_request:
{
switch (this.mConnectionState)
{
case CS_SERVER_CERTIFICATE:
case CS_CERTIFICATE_STATUS:
case CS_SERVER_KEY_EXCHANGE:
{
if (this.mConnectionState != CS_SERVER_KEY_EXCHANGE)
{
// There was no server key exchange message; check it's OK
this.mKeyExchange.SkipServerKeyExchange();
}
if (this.mAuthentication == null)
{
/*
* RFC 2246 7.4.4. It is a fatal handshake_failure alert for an anonymous server
* to request client identification.
*/
throw new TlsFatalAlert(AlertDescription.handshake_failure);
}
this.mCertificateRequest = CertificateRequest.Parse(Context, buf);
AssertEmpty(buf);
this.mKeyExchange.ValidateCertificateRequest(this.mCertificateRequest);
/*
* TODO Give the client a chance to immediately select the CertificateVerify hash
* algorithm here to avoid tracking the other hash algorithms unnecessarily?
*/
TlsUtilities.TrackHashAlgorithms(this.mRecordStream.HandshakeHash,
this.mCertificateRequest.SupportedSignatureAlgorithms);
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
this.mConnectionState = CS_CERTIFICATE_REQUEST;
break;
}
case HandshakeType.session_ticket:
{
switch (this.mConnectionState)
{
case CS_CLIENT_FINISHED:
{
if (!this.mExpectSessionTicket)
{
/*
* RFC 5077 3.3. This message MUST NOT be sent if the server did not include a
* SessionTicket extension in the ServerHello.
*/
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
/*
* RFC 5077 3.4. If the client receives a session ticket from the server, then it
* discards any Session ID that was sent in the ServerHello.
*/
InvalidateSession();
ReceiveNewSessionTicketMessage(buf);
break;
}
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
this.mConnectionState = CS_SERVER_SESSION_TICKET;
break;
}
case HandshakeType.hello_request:
{
AssertEmpty(buf);
/*
* RFC 2246 7.4.1.1 Hello request This message will be ignored by the client if the
* client is currently negotiating a session. This message may be ignored by the client
* if it does not wish to renegotiate a session, or the client may, if it wishes,
* respond with a no_renegotiation alert.
*/
if (this.mConnectionState == CS_END)
{
RefuseRenegotiation();
}
break;
}
case HandshakeType.client_hello:
case HandshakeType.client_key_exchange:
case HandshakeType.certificate_verify:
case HandshakeType.hello_verify_request:
default:
throw new TlsFatalAlert(AlertDescription.unexpected_message);
}
}
public abstract byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm,
AsymmetricKeyParameter privateKey, byte[] hash);
public override ISigner CreateSigner(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter privateKey)
{
return(MakeSigner(algorithm, raw: false, forSigning: true, new ParametersWithRandom(privateKey, mContext.SecureRandom)));
}
public abstract bool VerifyRawSignature(SignatureAndHashAlgorithm algorithm, byte[] sigBytes,
AsymmetricKeyParameter publicKey, byte[] hash);
public abstract byte[] GenerateRawSignature(SignatureAndHashAlgorithm algorithm,
AsymmetricKeyParameter privateKey, byte[] hash);
public abstract ISigner CreateVerifyer(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter publicKey);
public abstract ISigner CreateVerifyer(SignatureAndHashAlgorithm algorithm, AsymmetricKeyParameter publicKey);
public DefaultTlsSignerCredentials(TlsContext context, Certificate certificate, AsymmetricKeyParameter privateKey, SignatureAndHashAlgorithm signatureAndHashAlgorithm)
{
//IL_000e: Unknown result type (might be due to invalid IL or missing references)
//IL_0026: Unknown result type (might be due to invalid IL or missing references)
//IL_0034: Unknown result type (might be due to invalid IL or missing references)
//IL_004c: Unknown result type (might be due to invalid IL or missing references)
//IL_0068: Unknown result type (might be due to invalid IL or missing references)
//IL_00c2: Unknown result type (might be due to invalid IL or missing references)
if (certificate == null)
{
throw new ArgumentNullException("certificate");
}
if (certificate.IsEmpty)
{
throw new ArgumentException("cannot be empty", "clientCertificate");
}
if (privateKey == null)
{
throw new ArgumentNullException("privateKey");
}
if (!privateKey.IsPrivate)
{
throw new ArgumentException("must be private", "privateKey");
}
if (TlsUtilities.IsTlsV12(context) && signatureAndHashAlgorithm == null)
{
throw new ArgumentException("cannot be null for (D)TLS 1.2+", "signatureAndHashAlgorithm");
}
if (privateKey is RsaKeyParameters)
{
mSigner = new TlsRsaSigner();
}
else if (privateKey is DsaPrivateKeyParameters)
{
mSigner = new TlsDssSigner();
}
else
{
if (!(privateKey is ECPrivateKeyParameters))
{
throw new ArgumentException("type not supported: " + Platform.GetTypeName(privateKey), "privateKey");
}
mSigner = new TlsECDsaSigner();
}
mSigner.Init(context);
mContext = context;
mCertificate = certificate;
mPrivateKey = privateKey;
mSignatureAndHashAlgorithm = signatureAndHashAlgorithm;
}
