public override void GenerateClientKeyExchange(Stream output)
{
if (mPskIdentityHint == null)
{
mPskIdentity.SkipIdentityHint();
}
else
{
mPskIdentity.NotifyIdentityHint(mPskIdentityHint);
}
byte[] pskIdentity = mPskIdentity.GetPskIdentity();
if (pskIdentity == null)
{
throw new TlsFatalAlert(80);
}
mPsk = mPskIdentity.GetPsk();
if (mPsk == null)
{
throw new TlsFatalAlert(80);
}
TlsUtilities.WriteOpaque16(pskIdentity, output);
mContext.SecurityParameters.pskIdentity = pskIdentity;
if (mKeyExchange == 14)
{
mDHAgreePrivateKey = TlsDHUtilities.GenerateEphemeralClientKeyExchange(mContext.SecureRandom, mDHParameters, output);
}
else if (mKeyExchange == 24)
{
mECAgreePrivateKey = TlsEccUtilities.GenerateEphemeralClientKeyExchange(mContext.SecureRandom, mServerECPointFormats, mECAgreePublicKey.Parameters, output);
}
else if (mKeyExchange == 15)
{
mPremasterSecret = TlsRsaUtilities.GenerateEncryptedPreMasterSecret(mContext, mRsaServerPublicKey, output);
}
}
/**
* Encode this {@link OcspStatusRequest} to a {@link Stream}.
*
* @param output
* the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
if (mResponderIDList == null || mResponderIDList.Count < 1)
{
TlsUtilities.WriteUint16(0, output);
}
else
{
MemoryStream buf = new MemoryStream();
for (int i = 0; i < mResponderIDList.Count; ++i)
{
ResponderID responderID = (ResponderID)mResponderIDList[i];
byte[] derEncoding = responderID.GetEncoded(Asn1Encodable.Der);
TlsUtilities.WriteOpaque16(derEncoding, buf);
}
TlsUtilities.CheckUint16(buf.Length);
TlsUtilities.WriteUint16((int)buf.Length, output);
buf.WriteTo(output);
}
if (mRequestExtensions == null)
{
TlsUtilities.WriteUint16(0, output);
}
else
{
byte[] derEncoding = mRequestExtensions.GetEncoded(Asn1Encodable.Der);
TlsUtilities.CheckUint16(derEncoding.Length);
TlsUtilities.WriteUint16(derEncoding.Length, output);
output.Write(derEncoding, 0, derEncoding.Length);
}
}
public override byte[] GenerateServerKeyExchange()
{
mPskIdentityHint = mPskIdentityManager.GetHint();
if (mPskIdentityHint == null && !RequiresServerKeyExchange)
{
return(null);
}
MemoryStream memoryStream = new MemoryStream();
if (mPskIdentityHint == null)
{
TlsUtilities.WriteOpaque16(TlsUtilities.EmptyBytes, memoryStream);
}
else
{
TlsUtilities.WriteOpaque16(mPskIdentityHint, memoryStream);
}
if (mKeyExchange == 14)
{
if (mDHParameters == null)
{
throw new TlsFatalAlert(80);
}
mDHAgreePrivateKey = TlsDHUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom, mDHParameters, memoryStream);
}
else if (mKeyExchange == 24)
{
mECAgreePrivateKey = TlsEccUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom, mNamedCurves, mClientECPointFormats, memoryStream);
}
return(memoryStream.ToArray());
}
public virtual void Encode(Stream output)
{
if (mResponderIDList == null || mResponderIDList.Count < 1)
{
TlsUtilities.WriteUint16(0, output);
}
else
{
MemoryStream memoryStream = new MemoryStream();
for (int i = 0; i < mResponderIDList.Count; i++)
{
ResponderID responderID = (ResponderID)mResponderIDList[i];
byte[] encoded = responderID.GetEncoded("DER");
TlsUtilities.WriteOpaque16(encoded, memoryStream);
}
TlsUtilities.CheckUint16(memoryStream.Length);
TlsUtilities.WriteUint16((int)memoryStream.Length, output);
memoryStream.WriteTo(output);
}
if (mRequestExtensions == null)
{
TlsUtilities.WriteUint16(0, output);
return;
}
byte[] encoded2 = mRequestExtensions.GetEncoded("DER");
TlsUtilities.CheckUint16(encoded2.Length);
TlsUtilities.WriteUint16(encoded2.Length, output);
output.Write(encoded2, 0, encoded2.Length);
}
public virtual void Encode(Stream output)
{
if (mCertificateTypes == null || mCertificateTypes.Length == 0)
{
TlsUtilities.WriteUint8(0, output);
}
else
{
TlsUtilities.WriteUint8ArrayWithUint8Length(mCertificateTypes, output);
}
if (mSupportedSignatureAlgorithms != null)
{
TlsUtilities.EncodeSupportedSignatureAlgorithms(mSupportedSignatureAlgorithms, allowAnonymous: false, output);
}
if (mCertificateAuthorities == null || mCertificateAuthorities.Count < 1)
{
TlsUtilities.WriteUint16(0, output);
return;
}
IList list = Platform.CreateArrayList(mCertificateAuthorities.Count);
int num = 0;
foreach (Asn1Encodable mCertificateAuthority in mCertificateAuthorities)
{
byte[] encoded = mCertificateAuthority.GetEncoded("DER");
list.Add(encoded);
num += encoded.Length + 2;
}
TlsUtilities.CheckUint16(num);
TlsUtilities.WriteUint16(num, output);
foreach (byte[] item in list)
{
TlsUtilities.WriteOpaque16(item, output);
}
}
/**
* Encode this {@link DigitallySigned} to a {@link Stream}.
*
* @param output
* the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
if (mAlgorithm != null)
{
mAlgorithm.Encode(output);
}
TlsUtilities.WriteOpaque16(mSignature, output);
}
public override byte[] GeneratePremasterSecret()
{
byte[] array = GenerateOtherSecret(mPsk.Length);
MemoryStream memoryStream = new MemoryStream(4 + array.Length + mPsk.Length);
TlsUtilities.WriteOpaque16(array, memoryStream);
TlsUtilities.WriteOpaque16(mPsk, memoryStream);
Arrays.Fill(mPsk, 0);
mPsk = null;
return(memoryStream.ToArray());
}
public virtual void Encode(Stream output)
{
byte[] buf = Strings.ToByteArray(mUrl);
TlsUtilities.WriteOpaque16(buf, output);
if (mSha1Hash == null)
{
TlsUtilities.WriteUint8(0, output);
return;
}
TlsUtilities.WriteUint8(1, output);
output.Write(mSha1Hash, 0, mSha1Hash.Length);
}
public override byte[] GeneratePremasterSecret()
{
byte[] other_secret = GenerateOtherSecret(mPsk.Length);
MemoryStream buf = new MemoryStream(4 + other_secret.Length + mPsk.Length);
TlsUtilities.WriteOpaque16(other_secret, buf);
TlsUtilities.WriteOpaque16(mPsk, buf);
Arrays.Fill(mPsk, (byte)0);
this.mPsk = null;
return(buf.ToArray());
}
protected internal static void WriteSupplementalData(Stream output, IList supplementalData)
{
MemoryStream memoryStream = new MemoryStream();
foreach (SupplementalDataEntry supplementalDatum in supplementalData)
{
int dataType = supplementalDatum.DataType;
TlsUtilities.CheckUint16(dataType);
TlsUtilities.WriteUint16(dataType, memoryStream);
TlsUtilities.WriteOpaque16(supplementalDatum.Data, memoryStream);
}
byte[] buf = memoryStream.ToArray();
TlsUtilities.WriteOpaque24(buf, output);
}
/**
* Encode this {@link UrlAndHash} to a {@link Stream}.
*
* @param output the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
byte[] urlEncoding = Strings.ToByteArray(this.mUrl);
TlsUtilities.WriteOpaque16(urlEncoding, output);
if (this.mSha1Hash == null)
{
TlsUtilities.WriteUint8(0, output);
}
else
{
TlsUtilities.WriteUint8(1, output);
output.Write(this.mSha1Hash, 0, this.mSha1Hash.Length);
}
}
public virtual void Encode(Stream output)
{
TlsUtilities.WriteUint8(mNameType, output);
if (mNameType == 0)
{
byte[] array = Strings.ToAsciiByteArray((string)mName);
if (array.Length < 1)
{
throw new TlsFatalAlert(80);
}
TlsUtilities.WriteOpaque16(array, output);
return;
}
throw new TlsFatalAlert(80);
}
protected internal static void WriteExtensions(Stream output, IDictionary extensions)
{
MemoryStream memoryStream = new MemoryStream();
foreach (object key in extensions.Keys)
{
int num = (int)key;
byte[] buf = (byte[])extensions[num];
TlsUtilities.CheckUint16(num);
TlsUtilities.WriteUint16(num, memoryStream);
TlsUtilities.WriteOpaque16(buf, memoryStream);
}
byte[] buf2 = memoryStream.ToArray();
TlsUtilities.WriteOpaque16(buf2, output);
}
/**
* Encode this {@link ServerName} to a {@link Stream}.
*
* @param output
* the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
TlsUtilities.WriteUint8(mNameType, output);
switch (mNameType)
{
case Tls.NameType.host_name:
byte[] asciiEncoding = Strings.ToAsciiByteArray((string)mName);
if (asciiEncoding.Length < 1)
{
throw new TlsFatalAlert(AlertDescription.internal_error);
}
TlsUtilities.WriteOpaque16(asciiEncoding, output);
break;
default:
throw new TlsFatalAlert(AlertDescription.internal_error);
}
}
public override void GenerateClientKeyExchange(Stream output)
{
if (mPskIdentityHint == null)
{
mPskIdentity.SkipIdentityHint();
}
else
{
mPskIdentity.NotifyIdentityHint(mPskIdentityHint);
}
byte[] psk_identity = mPskIdentity.GetPskIdentity();
if (psk_identity == null)
{
throw new TlsFatalAlert(AlertDescription.internal_error);
}
this.mPsk = mPskIdentity.GetPsk();
if (mPsk == null)
{
throw new TlsFatalAlert(AlertDescription.internal_error);
}
TlsUtilities.WriteOpaque16(psk_identity, output);
mContext.SecurityParameters.pskIdentity = psk_identity;
if (this.mKeyExchange == KeyExchangeAlgorithm.DHE_PSK)
{
this.mDHAgreePrivateKey = TlsDHUtilities.GenerateEphemeralClientKeyExchange(mContext.SecureRandom,
mDHParameters, output);
}
else if (this.mKeyExchange == KeyExchangeAlgorithm.ECDHE_PSK)
{
this.mECAgreePrivateKey = TlsEccUtilities.GenerateEphemeralClientKeyExchange(mContext.SecureRandom,
mServerECPointFormats, mECAgreePublicKey.Parameters, output);
}
else if (this.mKeyExchange == KeyExchangeAlgorithm.RSA_PSK)
{
this.mPremasterSecret = TlsRsaUtilities.GenerateEncryptedPreMasterSecret(mContext,
this.mRsaServerPublicKey, output);
}
}
/**
* Encode this {@link CertificateRequest} to a {@link Stream}.
*
* @param output the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
if (mCertificateTypes == null || mCertificateTypes.Length == 0)
{
TlsUtilities.WriteUint8(0, output);
}
else
{
TlsUtilities.WriteUint8ArrayWithUint8Length(mCertificateTypes, output);
}
if (mSupportedSignatureAlgorithms != null)
{
// TODO Check whether SignatureAlgorithm.anonymous is allowed here
TlsUtilities.EncodeSupportedSignatureAlgorithms(mSupportedSignatureAlgorithms, false, output);
}
if (mCertificateAuthorities == null || mCertificateAuthorities.Count < 1)
{
TlsUtilities.WriteUint16(0, output);
}
else
{
IList derEncodings = Platform.CreateArrayList(mCertificateAuthorities.Count);
int totalLength = 0;
foreach (Asn1Encodable certificateAuthority in mCertificateAuthorities)
{
byte[] derEncoding = certificateAuthority.GetEncoded(Asn1Encodable.Der);
derEncodings.Add(derEncoding);
totalLength += derEncoding.Length + 2;
}
TlsUtilities.CheckUint16(totalLength);
TlsUtilities.WriteUint16(totalLength, output);
foreach (byte[] derEncoding in derEncodings)
{
TlsUtilities.WriteOpaque16(derEncoding, output);
}
}
}
/// <exception cref="IOException"></exception>
public static byte[] GenerateEncryptedPreMasterSecret(TlsContext context, RsaKeyParameters rsaServerPublicKey,
Stream output)
{
/*
* Choose a PremasterSecret and send it encrypted to the server
*/
byte[] premasterSecret = new byte[48];
context.SecureRandom.NextBytes(premasterSecret);
TlsUtilities.WriteVersion(context.ClientVersion, premasterSecret, 0);
Pkcs1Encoding encoding = new Pkcs1Encoding(new RsaBlindedEngine());
encoding.Init(true, new ParametersWithRandom(rsaServerPublicKey, context.SecureRandom));
try
{
byte[] encryptedPreMasterSecret = encoding.ProcessBlock(premasterSecret, 0, premasterSecret.Length);
if (TlsUtilities.IsSsl(context))
{
// TODO Do any SSLv3 servers actually expect the length?
output.Write(encryptedPreMasterSecret, 0, encryptedPreMasterSecret.Length);
}
else
{
TlsUtilities.WriteOpaque16(encryptedPreMasterSecret, output);
}
}
catch (InvalidCipherTextException e)
{
/*
* This should never happen, only during decryption.
*/
throw new TlsFatalAlert(AlertDescription.internal_error, e);
}
return(premasterSecret);
}
public override byte[] GenerateServerKeyExchange()
{
this.mPskIdentityHint = mPskIdentityManager.GetHint();
if (this.mPskIdentityHint == null && !RequiresServerKeyExchange)
{
return(null);
}
MemoryStream buf = new MemoryStream();
if (this.mPskIdentityHint == null)
{
TlsUtilities.WriteOpaque16(TlsUtilities.EmptyBytes, buf);
}
else
{
TlsUtilities.WriteOpaque16(this.mPskIdentityHint, buf);
}
if (this.mKeyExchange == KeyExchangeAlgorithm.DHE_PSK)
{
if (this.mDHParameters == null)
{
throw new TlsFatalAlert(AlertDescription.internal_error);
}
this.mDHAgreePrivateKey = TlsDHUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom,
this.mDHParameters, buf);
}
else if (this.mKeyExchange == KeyExchangeAlgorithm.ECDHE_PSK)
{
this.mECAgreePrivateKey = TlsEccUtilities.GenerateEphemeralServerKeyExchange(mContext.SecureRandom,
mNamedCurves, mClientECPointFormats, buf);
}
return(buf.ToArray());
}
public static void WriteDHParameter(BigInteger x, Stream output)
{
TlsUtilities.WriteOpaque16(BigIntegers.AsUnsignedByteArray(x), output);
}
/**
* Encode this {@link NewSessionTicket} to a {@link Stream}.
*
* @param output the {@link Stream} to encode to.
* @throws IOException
*/
public virtual void Encode(Stream output)
{
TlsUtilities.WriteUint32(mTicketLifetimeHint, output);
TlsUtilities.WriteOpaque16(mTicket, output);
}
