init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Crypto/Tls/PskTlsClient.cs

@@ -0,0 +1,55 @@
+namespace Org.BouncyCastle.Crypto.Tls;
+
+public class PskTlsClient : AbstractTlsClient
+{
+	protected TlsDHVerifier mDHVerifier;
+
+	protected TlsPskIdentity mPskIdentity;
+
+	public PskTlsClient(TlsPskIdentity pskIdentity)
+		: this(new DefaultTlsCipherFactory(), pskIdentity)
+	{
+	}
+
+	public PskTlsClient(TlsCipherFactory cipherFactory, TlsPskIdentity pskIdentity)
+		: this(cipherFactory, new DefaultTlsDHVerifier(), pskIdentity)
+	{
+	}
+
+	public PskTlsClient(TlsCipherFactory cipherFactory, TlsDHVerifier dhVerifier, TlsPskIdentity pskIdentity)
+		: base(cipherFactory)
+	{
+		mDHVerifier = dhVerifier;
+		mPskIdentity = pskIdentity;
+	}
+
+	public override int[] GetCipherSuites()
+	{
+		return new int[2] { 49207, 49205 };
+	}
+
+	public override TlsKeyExchange GetKeyExchange()
+	{
+		int keyExchangeAlgorithm = TlsUtilities.GetKeyExchangeAlgorithm(mSelectedCipherSuite);
+		switch (keyExchangeAlgorithm)
+		{
+		case 13:
+		case 14:
+		case 15:
+		case 24:
+			return CreatePskKeyExchange(keyExchangeAlgorithm);
+		default:
+			throw new TlsFatalAlert(80);
+		}
+	}
+
+	public override TlsAuthentication GetAuthentication()
+	{
+		throw new TlsFatalAlert(80);
+	}
+
+	protected virtual TlsKeyExchange CreatePskKeyExchange(int keyExchange)
+	{
+		return new TlsPskKeyExchange(keyExchange, mSupportedSignatureAlgorithms, mPskIdentity, null, mDHVerifier, null, mNamedCurves, mClientECPointFormats, mServerECPointFormats);
+	}
+}