Aug2021-Cpp2IL-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Crypto/Engines/RsaBlindingEngine.cs

using System;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines
{
	// Token: 0x02001CA4 RID: 7332
	[Token(Token = "0x2001CA4")]
	public class RsaBlindingEngine : IAsymmetricBlockCipher
	{
		// Token: 0x0600B867 RID: 47207 RVA: 0x0028FDC4 File Offset: 0x0028DFC4
		[Token(Token = "0x600B867")]
		[Address(RVA = "0x1DF9CC0", Offset = "0x1DF8AC0", VA = "0x181DF9CC0")]
		public RsaBlindingEngine()
		{
			RsaCoreEngine rsaCoreEngine = new RsaCoreEngine();
			base..ctor();
			this.core = rsaCoreEngine;
		}

		// Token: 0x0600B868 RID: 47208 RVA: 0x0028FDE4 File Offset: 0x0028DFE4
		[Token(Token = "0x600B868")]
		[Address(RVA = "0x3FFB80", Offset = "0x3FE980", VA = "0x1803FFB80")]
		public RsaBlindingEngine(IRsa rsa)
		{
			this.core = rsa;
		}

		// Token: 0x17001CE8 RID: 7400
		// (get) Token: 0x0600B869 RID: 47209 RVA: 0x0028FE00 File Offset: 0x0028E000
		[Token(Token = "0x17001CE8")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x600B869")]
			[Address(RVA = "0x1DF9D20", Offset = "0x1DF8B20", VA = "0x181DF9D20", Slot = "9")]
			get
			{
				return "RSA";
			}
		}

		// Token: 0x0600B86A RID: 47210 RVA: 0x0028FE14 File Offset: 0x0028E014
		[Token(Token = "0x600B86A")]
		[Address(RVA = "0x1DF9920", Offset = "0x1DF8720", VA = "0x181DF9920", Slot = "10")]
		public virtual void Init(bool forEncryption, ICipherParameters param)
		{
			int num;
			for (;;)
			{
				if ((param != 0 || param != 0) && param != 0 && param != 0)
				{
					num = 0;
					if (param != 0)
					{
						break;
					}
				}
			}
			IRsa rsa = this.core;
			this.forEncryption = forEncryption;
			this.key = num;
			this.blindingFactor = num;
		}

		// Token: 0x0600B86B RID: 47211 RVA: 0x0028FE68 File Offset: 0x0028E068
		[Token(Token = "0x600B86B")]
		[Address(RVA = "0x1DF9880", Offset = "0x1DF8680", VA = "0x181DF9880", Slot = "11")]
		public virtual int GetInputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x0600B86C RID: 47212 RVA: 0x0028FE84 File Offset: 0x0028E084
		[Token(Token = "0x600B86C")]
		[Address(RVA = "0x1DF98D0", Offset = "0x1DF86D0", VA = "0x181DF98D0", Slot = "12")]
		public virtual int GetOutputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x0600B86D RID: 47213 RVA: 0x0028FEA0 File Offset: 0x0028E0A0
		[Token(Token = "0x600B86D")]
		[Address(RVA = "0x1DF9B10", Offset = "0x1DF8910", VA = "0x181DF9B10", Slot = "13")]
		public virtual byte[] ProcessBlock(byte[] inBuf, int inOff, int inLen)
		{
			IRsa rsa = this.core;
			RsaKeyParameters rsaKeyParameters = this.key;
			if (!this.forEncryption)
			{
				BigInteger bigInteger = this.blindingFactor;
				BigInteger modulus = rsaKeyParameters.modulus;
				BigInteger bigInteger2 = bigInteger.ModInverse(modulus);
			}
			BigInteger bigInteger3 = this.blindingFactor;
			BigInteger modulus2 = rsaKeyParameters.modulus;
			BigInteger exponent = rsaKeyParameters.exponent;
			BigInteger bigInteger4 = bigInteger3.ModPow(exponent, modulus2);
			BigInteger modulus3 = this.key.modulus;
			BigInteger bigInteger6;
			BigInteger bigInteger5 = bigInteger6.Mod(modulus3);
			IRsa rsa2 = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x0600B86E RID: 47214 RVA: 0x0028FF28 File Offset: 0x0028E128
		[Token(Token = "0x600B86E")]
		[Address(RVA = "0x1DF9800", Offset = "0x1DF8600", VA = "0x181DF9800")]
		private BigInteger BlindMessage(BigInteger msg)
		{
			RsaKeyParameters rsaKeyParameters = this.key;
			BigInteger bigInteger = this.blindingFactor;
			BigInteger modulus = rsaKeyParameters.modulus;
			BigInteger exponent = rsaKeyParameters.exponent;
			BigInteger bigInteger2 = bigInteger.ModPow(exponent, modulus);
			BigInteger bigInteger3 = msg.Multiply(bigInteger2);
			BigInteger modulus2 = this.key.modulus;
			return bigInteger3.Mod(modulus2);
		}

		// Token: 0x0600B86F RID: 47215 RVA: 0x0028FF84 File Offset: 0x0028E184
		[Token(Token = "0x600B86F")]
		[Address(RVA = "0x1DF9C50", Offset = "0x1DF8A50", VA = "0x181DF9C50")]
		private BigInteger UnblindMessage(BigInteger blindedMsg)
		{
			RsaKeyParameters rsaKeyParameters = this.key;
			BigInteger bigInteger = this.blindingFactor;
			BigInteger modulus = rsaKeyParameters.modulus;
			BigInteger bigInteger2 = bigInteger.ModInverse(modulus);
			return blindedMsg.Multiply(bigInteger2).Mod(modulus);
		}

		// Token: 0x040074E9 RID: 29929
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40074E9")]
		private readonly IRsa core;

		// Token: 0x040074EA RID: 29930
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40074EA")]
		private RsaKeyParameters key;

		// Token: 0x040074EB RID: 29931
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40074EB")]
		private BigInteger blindingFactor;

		// Token: 0x040074EC RID: 29932
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40074EC")]
		private bool forEncryption;
	}
}