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

namespace ArchestrAServices.Contract;

public static class Constants
{
	public static int DH_KeySize = 1024;

	public static int DH_SecretSize = 160;

	public static string DH_passphrase = "Pas5pr@se";

	public static string SaltValue = "s@1tValue";

	public static string hashAlgorithm = CngAlgorithm.MD5.ToString();

	public static int PasswordIterations = 1;

	public static string InitialVector = "ba172e9941be138b";

	public static int KeySize = 256;

	private static string s_DECIMAL768 = "1552518092300708935130918131258481755631334049434514313202351194902966239949102107258669453876591642442910007680288864229150803718918046342632727613031282983744380820890196288509170691316593175367469551763119843371637221007210577919";

	private static byte[] s_OAKLEY768 = 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 static string s_DECIMAL1024 = "179769313486231590770839156793787453197860296048756011706444423684197180216158519368947833795864925541502180565485980503646440548199239100050792877003355816639229553136239076508735759914822574862575007425302077447712589550957937778424442426617334727629299387668709205606050270810842907692932019128194";

	private static byte[] s_OAKLEY1024 = 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 static string s_DECIMAL1536 = "2410312426921032588552076022197566074856950548502459942654116941958108831682612228890093858261341614673227141477904012196503648957050582631942730706805009223062734745341073406696246014589361659774041027169249453200378729434170325843778659198143763193776859869524088940195577346119843545301547043747207749969763750084308926339295559968882457872412993810129130294592999947926365264059284647209730384947211681434464714438488520940127459844288859336526896320919633919";

	private static byte[] s_OAKLEY1536 = 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
	};

	public static string GetDHPassphrase()
	{
		string passphrase = string.Empty;
		RegistryHandler.GetSolutionPassphrase(string.Empty, out passphrase);
		return passphrase;
	}

	public static void GenerateKey(int bitlen, out BigInteger DH_p, out BigInteger DH_g)
	{
		switch (bitlen)
		{
		case 768:
			BigInteger.TryParse(s_DECIMAL768, out DH_p);
			break;
		case 1024:
			BigInteger.TryParse(s_DECIMAL1024, out DH_p);
			break;
		case 1536:
			BigInteger.TryParse(s_DECIMAL1536, out DH_p);
			break;
		default:
			throw new ArgumentException("Invalid bit size.");
		}
		DH_g = new BigInteger(22);
	}
}