using System;
using System.Numerics;
using System.Security.Cryptography;
using ArchestrAServices.Common;

namespace Asb.Base.V2;

public class SysAuthParameters
{
	private const string SDecimal768 = "1552518092300708935130918131258481755631334049434514313202351194902966239949102107258669453876591642442910007680288864229150803718918046342632727613031282983744380820890196288509170691316593175367469551763119843371637221007210577919";

	private static readonly byte[] sOakley768 = new byte[96]
	{
		255, 255, 255, 255, 255, 255, 255, 255, 201, 15,
		218, 162, 33, 104, 194, 52, 196, 198, 98, 139,
		128, 220, 28, 209, 41, 2, 78, 8, 138, 103,
		204, 116, 2, 11, 190, 166, 59, 19, 155, 34,
		81, 74, 8, 121, 142, 52, 4, 221, 239, 149,
		25, 179, 205, 58, 67, 27, 48, 43, 10, 109,
		242, 95, 20, 55, 79, 225, 53, 109, 109, 81,
		194, 69, 228, 133, 181, 118, 98, 94, 126, 198,
		244, 76, 66, 233, 166, 58, 54, 32, 255, 255,
		255, 255, 255, 255, 255, 255
	};

	private const string SDecimal1024 = "179769313486231590770839156793787453197860296048756011706444423684197180216158519368947833795864925541502180565485980503646440548199239100050792877003355816639229553136239076508735759914822574862575007425302077447712589550957937778424442426617334727629299387668709205606050270810842907692932019128194";

	private static readonly byte[] sOakley1024 = new byte[128]
	{
		255, 255, 255, 255, 255, 255, 255, 255, 201, 15,
		218, 162, 33, 104, 194, 52, 196, 198, 98, 139,
		128, 220, 28, 209, 41, 2, 78, 8, 138, 103,
		204, 116, 2, 11, 190, 166, 59, 19, 155, 34,
		81, 74, 8, 121, 142, 52, 4, 221, 239, 149,
		25, 179, 205, 58, 67, 27, 48, 43, 10, 109,
		242, 95, 20, 55, 79, 225, 53, 109, 109, 81,
		194, 69, 228, 133, 181, 118, 98, 94, 126, 198,
		244, 76, 66, 233, 166, 55, 237, 107, 11, 255,
		92, 182, 244, 6, 183, 237, 238, 56, 107, 251,
		90, 137, 159, 165, 174, 159, 36, 17, 124, 75,
		31, 230, 73, 40, 102, 81, 236, 230, 83, 129,
		255, 255, 255, 255, 255, 255, 255, 255
	};

	private const string SDecimal1536 = "2410312426921032588552076022197566074856950548502459942654116941958108831682612228890093858261341614673227141477904012196503648957050582631942730706805009223062734745341073406696246014589361659774041027169249453200378729434170325843778659198143763193776859869524088940195577346119843545301547043747207749969763750084308926339295559968882457872412993810129130294592999947926365264059284647209730384947211681434464714438488520940127459844288859336526896320919633919";

	private static readonly byte[] sOakley1536 = new byte[192]
	{
		255, 255, 255, 255, 255, 255, 255, 255, 201, 15,
		218, 162, 33, 104, 194, 52, 196, 198, 98, 139,
		128, 220, 28, 209, 41, 2, 78, 8, 138, 103,
		204, 116, 2, 11, 190, 166, 59, 19, 155, 34,
		81, 74, 8, 121, 142, 52, 4, 221, 239, 149,
		25, 179, 205, 58, 67, 27, 48, 43, 10, 109,
		242, 95, 20, 55, 79, 225, 53, 109, 109, 81,
		194, 69, 228, 133, 181, 118, 98, 94, 126, 198,
		244, 76, 66, 233, 166, 55, 237, 107, 11, 255,
		92, 182, 244, 6, 183, 237, 238, 56, 107, 251,
		90, 137, 159, 165, 174, 159, 36, 17, 124, 75,
		31, 230, 73, 40, 102, 81, 236, 228, 91, 61,
		194, 0, 124, 184, 161, 99, 191, 5, 152, 218,
		72, 54, 28, 85, 211, 154, 105, 22, 63, 168,
		253, 36, 207, 95, 131, 101, 93, 35, 220, 163,
		173, 150, 28, 98, 243, 86, 32, 133, 82, 187,
		158, 213, 41, 7, 112, 150, 150, 109, 103, 12,
		53, 78, 74, 188, 152, 4, 241, 116, 108, 8,
		202, 35, 115, 39, 255, 255, 255, 255, 255, 255,
		255, 255
	};

	private const int DhKeySizeDft = 1024;

	private const int DhSecretSizeDft = 160;

	private static readonly string dhPassphraseDft = Environment.MachineName;

	private const uint ConnectionLifetimeDft = 60000u;

	private const string SaltValueDft = "s@1tValue";

	private static readonly string hashAlgorithmDft = CngAlgorithm.MD5.ToString();

	private const int PasswordIterationsDft = 1;

	private const string InitialVectorDft = "ba172e9941be138b";

	private const int KeySizeDft = 256;

	private readonly ISolutionParameters solutionParameterSource;

	private string sysAuthPassphrase;

	public string AsbSolutionName { get; set; }

	public bool AsbSolutionValid { get; set; }

	public int DhKeySize { get; set; }

	public int DhSecretSize { get; set; }

	public BigInteger DhP { get; set; }

	public BigInteger DhG { get; set; }

	public string DhPassphrase
	{
		get
		{
			return sysAuthPassphrase;
		}
		set
		{
			ResetToDefaults();
			sysAuthPassphrase = value;
			AsbSolutionValid = true;
		}
	}

	public byte[] DhCertificate { get; private set; }

	public uint ConnectionLifetime { get; set; }

	public string SaltValue { get; set; }

	public string HashAlgorithm { get; set; }

	public int PasswordIterations { get; set; }

	public string InitialVector { get; set; }

	public int KeySize { get; set; }

	public SysAuthParameters(string asbSolutionName = null)
	{
		ServiceTrace.LogVerbose("SysAuthParameters constructor with asbSolutionName = {0}", string.IsNullOrEmpty(asbSolutionName) ? "<null>" : asbSolutionName);
		AsbSolutionName = asbSolutionName;
		solutionParameterSource = new SolutionParameters();
		AsbSolutionValid = false;
		ResetToDefaults();
		LoadAsbSolution();
	}

	internal SysAuthParameters(string asbSolutionName, ISolutionParameters parameters)
	{
		ServiceTrace.LogVerbose("SysAuthParameters constructor with asbSolutionName = {0}", string.IsNullOrEmpty(asbSolutionName) ? "<null>" : asbSolutionName);
		AsbSolutionName = asbSolutionName;
		solutionParameterSource = parameters;
		AsbSolutionValid = false;
		ResetToDefaults();
		LoadAsbSolution();
	}

	private void ResetToDefaults()
	{
		AsbSolutionValid = false;
		DhKeySize = 1024;
		DhSecretSize = 160;
		sysAuthPassphrase = dhPassphraseDft;
		DhCertificate = null;
		ConnectionLifetime = 60000u;
		SaltValue = "s@1tValue";
		HashAlgorithm = hashAlgorithmDft;
		PasswordIterations = 1;
		InitialVector = "ba172e9941be138b";
		KeySize = 256;
		GenerateKey();
	}

	private void LoadAsbSolution()
	{
		ServiceTrace.LogResume("LoadAsbSolution entry");
		try
		{
			if (solutionParameterSource == null)
			{
				ServiceTrace.LogError("LoadAsbSolution: No solution source provided");
				AsbSolutionValid = false;
				return;
			}
			if (string.IsNullOrEmpty(AsbSolutionName))
			{
				AsbSolutionName = solutionParameterSource.DefaultAsbSolutionName;
				if (string.IsNullOrEmpty(AsbSolutionName))
				{
					ServiceTrace.LogError("LoadAsbSolution: Unable to get default ASB solution name");
					AsbSolutionValid = false;
				}
				ServiceTrace.LogInfo("LoadAsbSolution created with empty solution name, resetting to default '{0}'", string.IsNullOrEmpty(AsbSolutionName) ? "<null>" : AsbSolutionName);
			}
			AsbSolutionValid = false;
			if (!string.IsNullOrEmpty(AsbSolutionName))
			{
				ServiceTrace.LogVerbose("LoadAsbSolution: Using solution {0}", AsbSolutionName);
				string errorMessage = string.Empty;
				DhPassphrase = solutionParameterSource.GetSolutionPassphrase(AsbSolutionName, delegate(string msg)
				{
					errorMessage = msg;
				});
				if (string.IsNullOrEmpty(errorMessage))
				{
					DhCertificate = solutionParameterSource.GetSolutionCertificate(AsbSolutionName);
					SaltValue = solutionParameterSource.GetSolutionSaltValue(AsbSolutionName);
					HashAlgorithm = solutionParameterSource.GetSolutionHashAlgorithm(AsbSolutionName);
					PasswordIterations = solutionParameterSource.GetSolutionPasswordIterations(AsbSolutionName);
					InitialVector = solutionParameterSource.GetSolutionInitialVector(AsbSolutionName);
					KeySize = solutionParameterSource.GetSolutionKeySize(AsbSolutionName);
					DhP = solutionParameterSource.GetSolutionPrime(AsbSolutionName);
					DhG = solutionParameterSource.GetSolutionGenerator(AsbSolutionName);
					AsbSolutionValid = true;
				}
				else
				{
					ServiceTrace.LogError("LoadAsbSolution: Error loading passphrase: " + errorMessage);
				}
			}
		}
		catch (Exception ex)
		{
			ServiceTrace.LogError("LoadAsbSolution: Exception caught: {0}", ex.Message);
			AsbSolutionValid = false;
		}
		ServiceTrace.LogSuspend("LoadAsbSolution exit");
	}

	private void GenerateKey()
	{
		bool flag;
		BigInteger result;
		if (DhKeySize == 768)
		{
			flag = BigInteger.TryParse("1552518092300708935130918131258481755631334049434514313202351194902966239949102107258669453876591642442910007680288864229150803718918046342632727613031282983744380820890196288509170691316593175367469551763119843371637221007210577919", out result);
		}
		else if (DhKeySize == 1024)
		{
			flag = BigInteger.TryParse("179769313486231590770839156793787453197860296048756011706444423684197180216158519368947833795864925541502180565485980503646440548199239100050792877003355816639229553136239076508735759914822574862575007425302077447712589550957937778424442426617334727629299387668709205606050270810842907692932019128194", out result);
		}
		else
		{
			if (DhKeySize != 1536)
			{
				throw new ArgumentException("Invalid bit size.");
			}
			flag = BigInteger.TryParse("2410312426921032588552076022197566074856950548502459942654116941958108831682612228890093858261341614673227141477904012196503648957050582631942730706805009223062734745341073406696246014589361659774041027169249453200378729434170325843778659198143763193776859869524088940195577346119843545301547043747207749969763750084308926339295559968882457872412993810129130294592999947926365264059284647209730384947211681434464714438488520940127459844288859336526896320919633919", out result);
		}
		if (flag)
		{
			DhP = result;
		}
		DhG = new BigInteger(22);
	}
}