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);
context.SecureRandom = Porthelp.CreateSecureRandom();
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 TlsCipher AssignCipher(byte[] preMasterSecret, bool client, Version version, HandshakeInfo handshakeInfo)
{
int encryptionAlgorithm = GetEncryptionAlgorithm(handshakeInfo.CipherSuite);
int macAlgorithm = GetMACAlgorithm(handshakeInfo.CipherSuite);
TlsContext context = new DTLSContext(client, version, handshakeInfo);
SecurityParameters securityParameters = context.SecurityParameters;
byte[] seed = Concat(securityParameters.ClientRandom, securityParameters.ServerRandom);
string asciiLabel = ExporterLabel.master_secret;
handshakeInfo.MasterSecret = TlsUtilities.PRF(context, preMasterSecret, asciiLabel, seed, 48);
//session.Handshake.MasterSecret = TlsUtilities.PRF_legacy(preMasterSecret, asciiLabel, seed, 48);
#if DEBUG
Console.Write($"MasterSecret: {WriteToString(handshakeInfo.MasterSecret)}");
#endif
seed = Concat(securityParameters.ServerRandom, securityParameters.ClientRandom);
byte[] key_block = TlsUtilities.PRF(context, handshakeInfo.MasterSecret, ExporterLabel.key_expansion, seed, 96);
//byte[] key_block = TlsUtilities.PRF_legacy(session.Handshake.MasterSecret, ExporterLabel.key_expansion, seed, 96);
#if DEBUG
Console.Write($"Key block: {WriteToString(key_block)}");
#endif
return(CipherFactory.CreateCipher(context, encryptionAlgorithm, macAlgorithm));
}
public static byte[] GetVerifyData(Version version, HandshakeInfo handshakeInfo, bool client, bool isClientFinished, byte[] handshakeHash)
{
string asciiLabel;
TlsContext context = new DTLSContext(client, version, handshakeInfo);
if (isClientFinished)
asciiLabel = ExporterLabel.client_finished;
else
asciiLabel = ExporterLabel.server_finished;
//return TlsUtilities.PRF_legacy(masterSecret, asciiLabel, handshakeHash, 12);
return TlsUtilities.PRF(context, handshakeInfo.MasterSecret, asciiLabel, handshakeHash, 12);
}
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 TlsCipher AssignCipher(byte[] preMasterSecret, bool client, Version version, HandshakeInfo handshakeInfo)
{
int encryptionAlgorithm = GetEncryptionAlgorithm(handshakeInfo.CipherSuite);
int macAlgorithm = GetMACAlgorithm(handshakeInfo.CipherSuite);
TlsContext context = new DTLSContext(client, version, handshakeInfo);
SecurityParameters securityParameters = context.SecurityParameters;
byte[] seed = Concat(securityParameters.ClientRandom, securityParameters.ServerRandom);
string asciiLabel = ExporterLabel.master_secret;
handshakeInfo.MasterSecret = TlsUtilities.PRF(context, preMasterSecret, asciiLabel, seed, 48);
//session.Handshake.MasterSecret = TlsUtilities.PRF_legacy(preMasterSecret, asciiLabel, seed, 48);
#if DEBUG
Console.Write("MasterSecret :");
WriteToConsole(handshakeInfo.MasterSecret);
#endif
seed = Concat(securityParameters.ServerRandom, securityParameters.ClientRandom);
byte[] key_block = TlsUtilities.PRF(context, handshakeInfo.MasterSecret, ExporterLabel.key_expansion, seed, 96);
//byte[] key_block = TlsUtilities.PRF_legacy(session.Handshake.MasterSecret, ExporterLabel.key_expansion, seed, 96);
#if DEBUG
Console.Write("Key block :");
WriteToConsole(key_block);
#endif
return CipherFactory.CreateCipher(context, encryptionAlgorithm, macAlgorithm);
}
public static byte[] Sign(AsymmetricKeyParameter privateKey, RSACryptoServiceProvider rsaKey, bool client, Version version, HandshakeInfo handshakeInfo,
SignatureHashAlgorithm signatureHashAlgorithm, byte[] hash)
#endif
{
if (privateKey == null && rsaKey == null)
{
throw new ArgumentException("No key or Rsa CSP provided");
}
if (privateKey == null)
{
if (signatureHashAlgorithm.Signature == TSignatureAlgorithm.RSA)
{
return(SignRsa(rsaKey, hash));
}
throw new ArgumentException("Need private key for non-RSA Algorithms");
}
if (version == null)
{
throw new ArgumentNullException(nameof(version));
}
if (handshakeInfo == null)
{
throw new ArgumentNullException(nameof(handshakeInfo));
}
if (signatureHashAlgorithm == null)
{
throw new ArgumentNullException(nameof(signatureHashAlgorithm));
}
if (hash == null)
{
throw new ArgumentNullException(nameof(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;
}
var context = new DTLSContext(client, version, handshakeInfo);
var randomGenerator = new CryptoApiRandomGenerator();
context.SecureRandom = new SecureRandom(randomGenerator);
signer.Init(context);
if (TlsUtilities.IsTlsV12(context))
{
var signatureAndHashAlgorithm = new SignatureAndHashAlgorithm((byte)signatureHashAlgorithm.Hash, (byte)signatureHashAlgorithm.Signature);
return(signer.GenerateRawSignature(signatureAndHashAlgorithm, privateKey, hash));
}
else
{
return(signer.GenerateRawSignature(privateKey, hash));
}
}