using System;
using System.Runtime.InteropServices;
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: 0x020015DE RID: 5598
	[Token(Token = "0x20015DE")]
	[StructLayout(3)]
	public class SM2Signer : ISigner
	{
		// Token: 0x060095B8 RID: 38328 RVA: 0x0021316C File Offset: 0x0021136C
		[Token(Token = "0x60095B8")]
		[Address(RVA = "0x1E4BAD0", Offset = "0x1E4A4D0", VA = "0x181E4BAD0")]
		public SM2Signer()
		{
			RandomDsaKCalculator randomDsaKCalculator = new RandomDsaKCalculator();
			this.kCalculator = randomDsaKCalculator;
			SM3Digest sm3Digest = new SM3Digest();
			this.digest = sm3Digest;
			base..ctor();
			this.encoding = typeof(StandardDsaEncoding).TypeHandle;
		}

		// Token: 0x060095B9 RID: 38329 RVA: 0x002131A4 File Offset: 0x002113A4
		[Token(Token = "0x60095B9")]
		[Address(RVA = "0x1E4BB80", Offset = "0x1E4A580", VA = "0x181E4BB80")]
		public SM2Signer(IDsaEncoding encoding)
		{
			RandomDsaKCalculator randomDsaKCalculator = new RandomDsaKCalculator();
			this.kCalculator = randomDsaKCalculator;
			SM3Digest sm3Digest = new SM3Digest();
			this.digest = sm3Digest;
			base..ctor();
			this.encoding = encoding;
		}

		// Token: 0x170017ED RID: 6125
		// (get) Token: 0x060095BA RID: 38330 RVA: 0x002131D8 File Offset: 0x002113D8
		[Token(Token = "0x170017ED")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x60095BA")]
			[Address(RVA = "0x1E4BC10", Offset = "0x1E4A610", VA = "0x181E4BC10", Slot = "11")]
			get
			{
				return "SM2Sign";
			}
		}

		// Token: 0x060095BB RID: 38331 RVA: 0x002131EC File Offset: 0x002113EC
		[Token(Token = "0x60095BB")]
		[Address(RVA = "0x1E4B0C0", Offset = "0x1E49AC0", VA = "0x181E4B0C0", 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: 0x060095BC RID: 38332 RVA: 0x00213318 File Offset: 0x00211518
		[Token(Token = "0x60095BC")]
		[Address(RVA = "0x1E4B700", Offset = "0x1E4A100", VA = "0x181E4B700", Slot = "13")]
		public virtual void Update(byte b)
		{
			this.digest.Update(b);
		}

		// Token: 0x060095BD RID: 38333 RVA: 0x00213338 File Offset: 0x00211538
		[Token(Token = "0x60095BD")]
		[Address(RVA = "0x1E4A810", Offset = "0x1E49210", VA = "0x181E4A810", Slot = "14")]
		public virtual void BlockUpdate(byte[] buf, int off, int len)
		{
			this.digest.BlockUpdate(buf, off, len);
		}

		// Token: 0x060095BE RID: 38334 RVA: 0x0021335C File Offset: 0x0021155C
		[Token(Token = "0x60095BE")]
		[Address(RVA = "0x1E4B720", Offset = "0x1E4A120", VA = "0x181E4B720", Slot = "15")]
		public virtual bool VerifySignature(byte[] signature)
		{
			IDsaEncoding dsaEncoding = this.encoding;
			byte[] seed = this.ecParams.seed;
			bool flag;
			return flag;
		}

		// Token: 0x060095BF RID: 38335 RVA: 0x002133A0 File Offset: 0x002115A0
		[Token(Token = "0x60095BF")]
		[Address(RVA = "0x1E4B6A0", Offset = "0x1E4A0A0", VA = "0x181E4B6A0", 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: 0x060095C0 RID: 38336 RVA: 0x002133E8 File Offset: 0x002115E8
		[Token(Token = "0x60095C0")]
		[Address(RVA = "0x1E4A8F0", Offset = "0x1E492F0", VA = "0x181E4A8F0", 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: 0x060095C1 RID: 38337 RVA: 0x002134FC File Offset: 0x002116FC
		[Token(Token = "0x60095C1")]
		[Address(RVA = "0x1E4B810", Offset = "0x1E4A210", VA = "0x181E4B810")]
		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: 0x060095C2 RID: 38338 RVA: 0x002135B4 File Offset: 0x002117B4
		[Token(Token = "0x60095C2")]
		[Address(RVA = "0x1E4AE50", Offset = "0x1E49850", VA = "0x181E4AE50")]
		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: 0x060095C3 RID: 38339 RVA: 0x00213684 File Offset: 0x00211884
		[Token(Token = "0x60095C3")]
		[Address(RVA = "0x1E4A760", Offset = "0x1E49160", VA = "0x181E4A760")]
		private void AddUserID(IDigest digest, byte[] userID)
		{
			int length = userID.Length;
		}

		// Token: 0x060095C4 RID: 38340 RVA: 0x002136A0 File Offset: 0x002118A0
		[Token(Token = "0x60095C4")]
		[Address(RVA = "0x1E4A6D0", Offset = "0x1E490D0", VA = "0x181E4A6D0")]
		private void AddFieldElement(IDigest digest, ECFieldElement v)
		{
		}

		// Token: 0x060095C5 RID: 38341 RVA: 0x002136B4 File Offset: 0x002118B4
		[Token(Token = "0x60095C5")]
		[Address(RVA = "0x1E4A840", Offset = "0x1E49240", VA = "0x181E4A840", Slot = "18")]
		protected virtual BigInteger CalculateE(byte[] message)
		{
			return new BigInteger(1, message);
		}

		// Token: 0x060095C6 RID: 38342 RVA: 0x002136C8 File Offset: 0x002118C8
		[Token(Token = "0x60095C6")]
		[Address(RVA = "0x1E4A8A0", Offset = "0x1E492A0", VA = "0x181E4A8A0", Slot = "19")]
		protected virtual ECMultiplier CreateBasePointMultiplier()
		{
			/*
An exception occurred when decompiling this method (060095C6)

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: 0x040062D8 RID: 25304
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40062D8")]
		private readonly IDsaKCalculator kCalculator;

		// Token: 0x040062D9 RID: 25305
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40062D9")]
		private readonly SM3Digest digest;

		// Token: 0x040062DA RID: 25306
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40062DA")]
		private readonly IDsaEncoding encoding;

		// Token: 0x040062DB RID: 25307
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40062DB")]
		private ECDomainParameters ecParams;

		// Token: 0x040062DC RID: 25308
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40062DC")]
		private ECPoint pubPoint;

		// Token: 0x040062DD RID: 25309
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40062DD")]
		private ECKeyParameters ecKey;

		// Token: 0x040062DE RID: 25310
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x40")]
		[Token(Token = "0x40062DE")]
		private byte[] z;
	}
}