protected virtual void ReceiveServerHelloMessage(MemoryStream buf)
{
ProtocolVersion protocolVersion = TlsUtilities.ReadVersion((Stream)(object)buf);
if (protocolVersion.IsDtls)
{
throw new TlsFatalAlert(47);
}
if (!protocolVersion.Equals(mRecordStream.ReadVersion))
{
throw new TlsFatalAlert(47);
}
ProtocolVersion clientVersion = Context.ClientVersion;
if (!protocolVersion.IsEqualOrEarlierVersionOf(clientVersion))
{
throw new TlsFatalAlert(47);
}
mRecordStream.SetWriteVersion(protocolVersion);
ContextAdmin.SetServerVersion(protocolVersion);
mTlsClient.NotifyServerVersion(protocolVersion);
mSecurityParameters.serverRandom = TlsUtilities.ReadFully(32, (Stream)(object)buf);
mSelectedSessionID = TlsUtilities.ReadOpaque8((Stream)(object)buf);
if (mSelectedSessionID.Length > 32)
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySessionID(mSelectedSessionID);
mResumedSession = mSelectedSessionID.Length > 0 && mTlsSession != null && Arrays.AreEqual(mSelectedSessionID, mTlsSession.SessionID);
int num = TlsUtilities.ReadUint16((Stream)(object)buf);
if (!Arrays.Contains(mOfferedCipherSuites, num) || num == 0 || CipherSuite.IsScsv(num) || !TlsUtilities.IsValidCipherSuiteForVersion(num, Context.ServerVersion))
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySelectedCipherSuite(num);
byte b = TlsUtilities.ReadUint8((Stream)(object)buf);
if (!Arrays.Contains(mOfferedCompressionMethods, b))
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySelectedCompressionMethod(b);
mServerExtensions = TlsProtocol.ReadExtensions(buf);
if (mServerExtensions != null)
{
{
global::System.Collections.IEnumerator enumerator = ((global::System.Collections.IEnumerable)mServerExtensions.get_Keys()).GetEnumerator();
try
{
while (enumerator.MoveNext())
{
int num2 = (int)enumerator.get_Current();
if (num2 != 65281)
{
if (TlsUtilities.GetExtensionData(mClientExtensions, num2) == null)
{
throw new TlsFatalAlert(110);
}
_ = mResumedSession;
}
}
}
finally
{
global::System.IDisposable disposable = enumerator as global::System.IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
}
}
byte[] extensionData = TlsUtilities.GetExtensionData(mServerExtensions, 65281);
if (extensionData != null)
{
mSecureRenegotiation = true;
if (!Arrays.ConstantTimeAreEqual(extensionData, TlsProtocol.CreateRenegotiationInfo(TlsUtilities.EmptyBytes)))
{
throw new TlsFatalAlert(40);
}
}
mTlsClient.NotifySecureRenegotiation(mSecureRenegotiation);
IDictionary val = mClientExtensions;
IDictionary val2 = mServerExtensions;
if (mResumedSession)
{
if (num != mSessionParameters.CipherSuite || b != mSessionParameters.CompressionAlgorithm)
{
throw new TlsFatalAlert(47);
}
val = null;
val2 = mSessionParameters.ReadServerExtensions();
}
mSecurityParameters.cipherSuite = num;
mSecurityParameters.compressionAlgorithm = b;
if (val2 != null)
{
bool flag = TlsExtensionsUtilities.HasEncryptThenMacExtension(val2);
if (flag && !TlsUtilities.IsBlockCipherSuite(num))
{
throw new TlsFatalAlert(47);
}
mSecurityParameters.encryptThenMac = flag;
mSecurityParameters.extendedMasterSecret = TlsExtensionsUtilities.HasExtendedMasterSecretExtension(val2);
mSecurityParameters.maxFragmentLength = ProcessMaxFragmentLengthExtension(val, val2, 47);
mSecurityParameters.truncatedHMac = TlsExtensionsUtilities.HasTruncatedHMacExtension(val2);
mAllowCertificateStatus = !mResumedSession && TlsUtilities.HasExpectedEmptyExtensionData(val2, 5, 47);
mExpectSessionTicket = !mResumedSession && TlsUtilities.HasExpectedEmptyExtensionData(val2, 35, 47);
}
if (val != null)
{
mTlsClient.ProcessServerExtensions(val2);
}
mSecurityParameters.prfAlgorithm = TlsProtocol.GetPrfAlgorithm(Context, mSecurityParameters.CipherSuite);
mSecurityParameters.verifyDataLength = 12;
}
protected virtual void ReceiveServerHelloMessage(MemoryStream buf)
{
ProtocolVersion protocolVersion = TlsUtilities.ReadVersion(buf);
if (protocolVersion.IsDtls)
{
throw new TlsFatalAlert(47);
}
if (!protocolVersion.Equals(mRecordStream.ReadVersion))
{
throw new TlsFatalAlert(47);
}
ProtocolVersion clientVersion = Context.ClientVersion;
if (!protocolVersion.IsEqualOrEarlierVersionOf(clientVersion))
{
throw new TlsFatalAlert(47);
}
mRecordStream.SetWriteVersion(protocolVersion);
ContextAdmin.SetServerVersion(protocolVersion);
mTlsClient.NotifyServerVersion(protocolVersion);
mSecurityParameters.serverRandom = TlsUtilities.ReadFully(32, buf);
mSelectedSessionID = TlsUtilities.ReadOpaque8(buf);
if (mSelectedSessionID.Length > 32)
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySessionID(mSelectedSessionID);
mResumedSession = (mSelectedSessionID.Length > 0 && mTlsSession != null && Arrays.AreEqual(mSelectedSessionID, mTlsSession.SessionID));
int num = TlsUtilities.ReadUint16(buf);
if (!Arrays.Contains(mOfferedCipherSuites, num) || num == 0 || CipherSuite.IsScsv(num) || !TlsUtilities.IsValidCipherSuiteForVersion(num, Context.ServerVersion))
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySelectedCipherSuite(num);
byte b = TlsUtilities.ReadUint8(buf);
if (!Arrays.Contains(mOfferedCompressionMethods, b))
{
throw new TlsFatalAlert(47);
}
mTlsClient.NotifySelectedCompressionMethod(b);
mServerExtensions = TlsProtocol.ReadExtensions(buf);
if (mServerExtensions != null)
{
foreach (int key in mServerExtensions.Keys)
{
if (key != 65281)
{
if (TlsUtilities.GetExtensionData(mClientExtensions, key) == null)
{
throw new TlsFatalAlert(110);
}
if (!mResumedSession)
{
}
}
}
}
byte[] extensionData = TlsUtilities.GetExtensionData(mServerExtensions, 65281);
if (extensionData != null)
{
mSecureRenegotiation = true;
if (!Arrays.ConstantTimeAreEqual(extensionData, TlsProtocol.CreateRenegotiationInfo(TlsUtilities.EmptyBytes)))
{
throw new TlsFatalAlert(40);
}
}
mTlsClient.NotifySecureRenegotiation(mSecureRenegotiation);
IDictionary dictionary = mClientExtensions;
IDictionary dictionary2 = mServerExtensions;
if (mResumedSession)
{
if (num != mSessionParameters.CipherSuite || b != mSessionParameters.CompressionAlgorithm)
{
throw new TlsFatalAlert(47);
}
dictionary = null;
dictionary2 = mSessionParameters.ReadServerExtensions();
}
mSecurityParameters.cipherSuite = num;
mSecurityParameters.compressionAlgorithm = b;
if (dictionary2 != null)
{
bool flag = TlsExtensionsUtilities.HasEncryptThenMacExtension(dictionary2);
if (flag && !TlsUtilities.IsBlockCipherSuite(num))
{
throw new TlsFatalAlert(47);
}
mSecurityParameters.encryptThenMac = flag;
mSecurityParameters.extendedMasterSecret = TlsExtensionsUtilities.HasExtendedMasterSecretExtension(dictionary2);
mSecurityParameters.maxFragmentLength = ProcessMaxFragmentLengthExtension(dictionary, dictionary2, 47);
mSecurityParameters.truncatedHMac = TlsExtensionsUtilities.HasTruncatedHMacExtension(dictionary2);
mAllowCertificateStatus = (!mResumedSession && TlsUtilities.HasExpectedEmptyExtensionData(dictionary2, 5, 47));
mExpectSessionTicket = (!mResumedSession && TlsUtilities.HasExpectedEmptyExtensionData(dictionary2, 35, 47));
}
if (dictionary != null)
{
mTlsClient.ProcessServerExtensions(dictionary2);
}
mSecurityParameters.prfAlgorithm = TlsProtocol.GetPrfAlgorithm(Context, mSecurityParameters.CipherSuite);
mSecurityParameters.verifyDataLength = 12;
}
