init commit

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

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+using Org.BouncyCastle.Crypto.Agreement.Srp;
+using Org.BouncyCastle.Crypto.Macs;
+using Org.BouncyCastle.Crypto.Parameters;
+using Org.BouncyCastle.Math;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Crypto.Tls;
+
+public class SimulatedTlsSrpIdentityManager : TlsSrpIdentityManager
+{
+	private static readonly byte[] PREFIX_PASSWORD = Strings.ToByteArray("password");
+
+	private static readonly byte[] PREFIX_SALT = Strings.ToByteArray("salt");
+
+	protected readonly Srp6GroupParameters mGroup;
+
+	protected readonly Srp6VerifierGenerator mVerifierGenerator;
+
+	protected readonly IMac mMac;
+
+	public static SimulatedTlsSrpIdentityManager GetRfc5054Default(Srp6GroupParameters group, byte[] seedKey)
+	{
+		Srp6VerifierGenerator srp6VerifierGenerator = new Srp6VerifierGenerator();
+		srp6VerifierGenerator.Init(group, TlsUtilities.CreateHash(2));
+		HMac hMac = new HMac(TlsUtilities.CreateHash(2));
+		hMac.Init(new KeyParameter(seedKey));
+		return new SimulatedTlsSrpIdentityManager(group, srp6VerifierGenerator, hMac);
+	}
+
+	public SimulatedTlsSrpIdentityManager(Srp6GroupParameters group, Srp6VerifierGenerator verifierGenerator, IMac mac)
+	{
+		mGroup = group;
+		mVerifierGenerator = verifierGenerator;
+		mMac = mac;
+	}
+
+	public virtual TlsSrpLoginParameters GetLoginParameters(byte[] identity)
+	{
+		mMac.BlockUpdate(PREFIX_SALT, 0, PREFIX_SALT.Length);
+		mMac.BlockUpdate(identity, 0, identity.Length);
+		byte[] array = new byte[mMac.GetMacSize()];
+		mMac.DoFinal(array, 0);
+		mMac.BlockUpdate(PREFIX_PASSWORD, 0, PREFIX_PASSWORD.Length);
+		mMac.BlockUpdate(identity, 0, identity.Length);
+		byte[] array2 = new byte[mMac.GetMacSize()];
+		mMac.DoFinal(array2, 0);
+		BigInteger verifier = mVerifierGenerator.GenerateVerifier(array, identity, array2);
+		return new TlsSrpLoginParameters(mGroup, verifier, array);
+	}
+}