using System;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Digests;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Multiplier;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math.Field;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities.Encoders;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Signers
{
	// Token: 0x02001C9B RID: 7323
	[Token(Token = "0x2001C9B")]
	public class SM2Signer : ISigner
	{
		// Token: 0x0600B560 RID: 46432 RVA: 0x0027399C File Offset: 0x00271B9C
		[Token(Token = "0x600B560")]
		[Address(RVA = "0x2367170", Offset = "0x2366170", VA = "0x182367170")]
		public SM2Signer()
		{
			RandomDsaKCalculator randomDsaKCalculator = new RandomDsaKCalculator();
			this.kCalculator = randomDsaKCalculator;
			SM3Digest sm3Digest = new SM3Digest();
			this.digest = sm3Digest;
			base..ctor();
			this.encoding = typeof(StandardDsaEncoding).TypeHandle;
		}

		// Token: 0x0600B561 RID: 46433 RVA: 0x002739D4 File Offset: 0x00271BD4
		[Token(Token = "0x600B561")]
		[Address(RVA = "0x2367220", Offset = "0x2366220", VA = "0x182367220")]
		public SM2Signer(IDsaEncoding encoding)
		{
			RandomDsaKCalculator randomDsaKCalculator = new RandomDsaKCalculator();
			this.kCalculator = randomDsaKCalculator;
			SM3Digest sm3Digest = new SM3Digest();
			this.digest = sm3Digest;
			base..ctor();
			this.encoding = encoding;
		}

		// Token: 0x17001C8B RID: 7307
		// (get) Token: 0x0600B562 RID: 46434 RVA: 0x00273A08 File Offset: 0x00271C08
		[Token(Token = "0x17001C8B")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x600B562")]
			[Address(RVA = "0x23672B0", Offset = "0x23662B0", VA = "0x1823672B0", Slot = "11")]
			get
			{
				return "SM2Sign";
			}
		}

		// Token: 0x0600B563 RID: 46435 RVA: 0x00273A1C File Offset: 0x00271C1C
		[Token(Token = "0x600B563")]
		[Address(RVA = "0x2366760", Offset = "0x2365760", VA = "0x182366760", Slot = "12")]
		public virtual void Init(bool forSigning, ICipherParameters parameters)
		{
			byte[] array;
			ECKeyParameters eckeyParameters;
			for (;;)
			{
				if (parameters == 0 || parameters == 0 || (parameters != 0 && parameters != 0 && parameters != 0 && parameters != 0))
				{
					array = Hex.Decode("31323334353637383132333435363738");
					if (!forSigning)
					{
						if (parameters == 0)
						{
						}
						int num = 0;
						if (parameters == 0)
						{
							continue;
						}
						this.ecKey = parameters;
						this.ecParams = num;
						if (parameters == 0 || parameters == 0)
						{
							continue;
						}
					}
					int num2;
					if (parameters != 0)
					{
						if ((parameters == 0 && parameters == 0) || parameters == 0)
						{
							continue;
						}
						num2 = 0;
						this.ecParams = num2;
						IDsaKCalculator dsaKCalculator = this.kCalculator;
					}
					int num3 = 0;
					this.ecKey = num3;
					IDsaKCalculator dsaKCalculator2 = this.kCalculator;
					this.ecParams = num2;
					SecureRandom secureRandom = new SecureRandom();
					ECDomainParameters ecdomainParameters = this.ecParams;
					eckeyParameters = this.ecKey;
					if (eckeyParameters != 0 && eckeyParameters != 0)
					{
						break;
					}
				}
			}
			this.pubPoint = eckeyParameters;
			SM3Digest sm3Digest = this.digest;
			byte[] array2 = this.GetZ(array);
			this.z = array2;
			SM3Digest sm3Digest2 = this.digest;
			int length = array2.Length;
			int num4 = 0;
			sm3Digest2.BlockUpdate(array2, num4, length);
		}

		// Token: 0x0600B564 RID: 46436 RVA: 0x00273B48 File Offset: 0x00271D48
		[Token(Token = "0x600B564")]
		[Address(RVA = "0x2366DA0", Offset = "0x2365DA0", VA = "0x182366DA0", Slot = "13")]
		public virtual void Update(byte b)
		{
			this.digest.Update(b);
		}

		// Token: 0x0600B565 RID: 46437 RVA: 0x00273B68 File Offset: 0x00271D68
		[Token(Token = "0x600B565")]
		[Address(RVA = "0x2365EB0", Offset = "0x2364EB0", VA = "0x182365EB0", Slot = "14")]
		public virtual void BlockUpdate(byte[] buf, int off, int len)
		{
			this.digest.BlockUpdate(buf, off, len);
		}

		// Token: 0x0600B566 RID: 46438 RVA: 0x00273B8C File Offset: 0x00271D8C
		[Token(Token = "0x600B566")]
		[Address(RVA = "0x2366DC0", Offset = "0x2365DC0", VA = "0x182366DC0", Slot = "15")]
		public virtual bool VerifySignature(byte[] signature)
		{
			IDsaEncoding dsaEncoding = this.encoding;
			byte[] seed = this.ecParams.seed;
			bool flag;
			return flag;
		}

		// Token: 0x0600B567 RID: 46439 RVA: 0x00273BD0 File Offset: 0x00271DD0
		[Token(Token = "0x600B567")]
		[Address(RVA = "0x2366D40", Offset = "0x2365D40", VA = "0x182366D40", Slot = "16")]
		public virtual void Reset()
		{
			if (this.z != (ulong)0L)
			{
				SM3Digest sm3Digest = this.digest;
				byte[] array = this.z;
				SM3Digest sm3Digest2 = this.digest;
				int length = array.Length;
				int num = 0;
				sm3Digest2.BlockUpdate(array, num, length);
			}
		}

		// Token: 0x0600B568 RID: 46440 RVA: 0x00273C18 File Offset: 0x00271E18
		[Token(Token = "0x600B568")]
		[Address(RVA = "0x2365F90", Offset = "0x2364F90", VA = "0x182365F90", Slot = "17")]
		public virtual byte[] GenerateSignature()
		{
			for (;;)
			{
				byte[] array = DigestUtilities.DoFinal(this.digest);
				BigInteger n = this.ecParams.n;
				ECKeyParameters eckeyParameters = this.ecKey;
				if ("{il2cpp array field local3->}" == typeof(ECPrivateKeyParameters).TypeHandle)
				{
				}
				if (eckeyParameters != 0)
				{
					int num = 0;
					if (eckeyParameters != 0)
					{
						int num2 = 0;
						IDsaKCalculator dsaKCalculator = this.kCalculator;
						if (num2 < num)
						{
							num2 += num2;
							num2++;
						}
						ECDomainParameters ecdomainParameters = this.ecParams;
						int num3 = 0;
						uint num4;
						if (num3 < (int)num4)
						{
							num3 += num3;
							num3++;
						}
						char c;
						string text = c.ToString();
						BigInteger bigInteger2;
						BigInteger bigInteger = bigInteger2.Mod(n);
						while (bigInteger.sign == 0)
						{
						}
						if (bigInteger.Add(num2) == 0)
						{
							BigInteger one = BigInteger.One;
							BigInteger bigInteger4;
							BigInteger bigInteger3 = bigInteger4.ModInverse(n);
							BigInteger bigInteger5 = bigInteger.Multiply(n);
							BigInteger bigInteger7;
							BigInteger bigInteger6 = bigInteger7.Mod(n);
							if (bigInteger3.Multiply(bigInteger6).Mod(n).sign != 0)
							{
								break;
							}
						}
					}
				}
			}
			IDsaEncoding dsaEncoding = this.encoding;
			ECDomainParameters ecdomainParameters2 = this.ecParams;
			throw new NullReferenceException();
		}

		// Token: 0x0600B569 RID: 46441 RVA: 0x00273D2C File Offset: 0x00271F2C
		[Token(Token = "0x600B569")]
		[Address(RVA = "0x2366EB0", Offset = "0x2365EB0", VA = "0x182366EB0")]
		private bool VerifySignature(BigInteger r, BigInteger s)
		{
			BigInteger n = this.ecParams.n;
			BigInteger one = BigInteger.One;
			int num = r.CompareTo(one);
			int num2 = r.CompareTo(n);
			BigInteger one2 = BigInteger.One;
			int num3 = s.CompareTo(one2);
			int num4 = s.CompareTo(n);
			byte[] array = DigestUtilities.DoFinal(this.digest);
			byte[] array2 = this.GenerateSignature();
			BigInteger bigInteger = r.Add(s);
			int num5 = 0;
			BigInteger bigInteger2 = bigInteger.Mod(n);
			if (bigInteger2.sign != 0)
			{
				bool flag = ECAlgorithms.SumOfTwoMultiplies(this.ecParams.g, s, num5, bigInteger2).IsNormalized();
				bool flag2;
				if (!flag2)
				{
					sbyte b;
					string text = b.ToString();
					BigInteger bigInteger4;
					BigInteger bigInteger3 = bigInteger4.Mod(n);
				}
			}
			throw new NullReferenceException();
		}

		// Token: 0x0600B56A RID: 46442 RVA: 0x00273DE4 File Offset: 0x00271FE4
		[Token(Token = "0x600B56A")]
		[Address(RVA = "0x23664F0", Offset = "0x23654F0", VA = "0x1823664F0")]
		private byte[] GetZ(byte[] userID)
		{
			SM3Digest sm3Digest = this.digest;
			int length = userID.Length;
			IFiniteField field = this.ecParams.curve.Field;
			ECDomainParameters ecdomainParameters = this.ecParams;
			SM3Digest sm3Digest2 = this.digest;
			ECFieldElement a = ecdomainParameters.curve.A;
			this.AddFieldElement(sm3Digest2, a);
			int curveCoordinateSystem = this.ecParams.g.CurveCoordinateSystem;
			ECDomainParameters ecdomainParameters2 = this.ecParams;
			SM3Digest sm3Digest3 = this.digest;
			ECFieldElement affineXCoord = ecdomainParameters2.g.AffineXCoord;
			this.AddFieldElement(sm3Digest3, affineXCoord);
			int curveCoordinateSystem2 = this.pubPoint.CurveCoordinateSystem;
			ECPoint ecpoint = this.pubPoint;
			SM3Digest sm3Digest4 = this.digest;
			ECFieldElement affineXCoord2 = ecpoint.AffineXCoord;
			this.AddFieldElement(sm3Digest4, affineXCoord2);
			return DigestUtilities.DoFinal(this.digest);
		}

		// Token: 0x0600B56B RID: 46443 RVA: 0x00273EB4 File Offset: 0x002720B4
		[Token(Token = "0x600B56B")]
		[Address(RVA = "0x2365E00", Offset = "0x2364E00", VA = "0x182365E00")]
		private void AddUserID(IDigest digest, byte[] userID)
		{
			int length = userID.Length;
		}

		// Token: 0x0600B56C RID: 46444 RVA: 0x00273ED0 File Offset: 0x002720D0
		[Token(Token = "0x600B56C")]
		[Address(RVA = "0x2365D70", Offset = "0x2364D70", VA = "0x182365D70")]
		private void AddFieldElement(IDigest digest, ECFieldElement v)
		{
		}

		// Token: 0x0600B56D RID: 46445 RVA: 0x00273EE4 File Offset: 0x002720E4
		[Token(Token = "0x600B56D")]
		[Address(RVA = "0x2365EE0", Offset = "0x2364EE0", VA = "0x182365EE0", Slot = "18")]
		protected virtual BigInteger CalculateE(byte[] message)
		{
			return new BigInteger(1, message);
		}

		// Token: 0x0600B56E RID: 46446 RVA: 0x00273EF8 File Offset: 0x002720F8
		[Token(Token = "0x600B56E")]
		[Address(RVA = "0x2365F40", Offset = "0x2364F40", VA = "0x182365F40", Slot = "19")]
		protected virtual ECMultiplier CreateBasePointMultiplier()
		{
			/*
An exception occurred when decompiling this method (0600B56E)

ICSharpCode.Decompiler.DecompilerException: Error decompiling BestHTTP.SecureProtocol.Org.BouncyCastle.Math.EC.Multiplier.ECMultiplier BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Signers.SM2Signer::CreateBasePointMultiplier()

 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
	Block_0:
	stloc:FixedPointCombMultiplier(var_0_05, newobj:FixedPointCombMultiplier(FixedPointCombMultiplier::.ctor))
}

   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88
   --- End of inner exception stack trace ---
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92
   at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1663
*/;
		}

		// Token: 0x040072D4 RID: 29396
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40072D4")]
		private readonly IDsaKCalculator kCalculator;

		// Token: 0x040072D5 RID: 29397
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40072D5")]
		private readonly SM3Digest digest;

		// Token: 0x040072D6 RID: 29398
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40072D6")]
		private readonly IDsaEncoding encoding;

		// Token: 0x040072D7 RID: 29399
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40072D7")]
		private ECDomainParameters ecParams;

		// Token: 0x040072D8 RID: 29400
		[FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40072D8")]
		private ECPoint pubPoint;

		// Token: 0x040072D9 RID: 29401
		[FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40072D9")]
		private ECKeyParameters ecKey;

		// Token: 0x040072DA RID: 29402
		[FieldOffset(Offset = "0x40")]
		[Token(Token = "0x40072DA")]
		private byte[] z;
	}
}