27Aug2021-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: 0x02001D84 RID: 7556
	[Token(Token = "0x2001D84")]
	public class RsaBlindingEngine : IAsymmetricBlockCipher
	{
		// Token: 0x0600BC35 RID: 48181 RVA: 0x00298ED8 File Offset: 0x002970D8
		[Token(Token = "0x600BC35")]
		[Address(RVA = "0x2736A20", Offset = "0x2735A20", VA = "0x182736A20")]
		public RsaBlindingEngine()
		{
			RsaCoreEngine rsaCoreEngine = new RsaCoreEngine();
			base..ctor();
			this.core = rsaCoreEngine;
		}

		// Token: 0x0600BC36 RID: 48182 RVA: 0x00298EF8 File Offset: 0x002970F8
		[Token(Token = "0x600BC36")]
		[Address(RVA = "0x493D90", Offset = "0x492D90", VA = "0x180493D90")]
		public RsaBlindingEngine(IRsa rsa)
		{
			this.core = rsa;
		}

		// Token: 0x17001D85 RID: 7557
		// (get) Token: 0x0600BC37 RID: 48183 RVA: 0x00298F14 File Offset: 0x00297114
		[Token(Token = "0x17001D85")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x600BC37")]
			[Address(RVA = "0x2736A80", Offset = "0x2735A80", VA = "0x182736A80", Slot = "9")]
			get
			{
				return "RSA";
			}
		}

		// Token: 0x0600BC38 RID: 48184 RVA: 0x00298F28 File Offset: 0x00297128
		[Token(Token = "0x600BC38")]
		[Address(RVA = "0x2736680", Offset = "0x2735680", VA = "0x182736680", 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: 0x0600BC39 RID: 48185 RVA: 0x00298F7C File Offset: 0x0029717C
		[Token(Token = "0x600BC39")]
		[Address(RVA = "0x27365E0", Offset = "0x27355E0", VA = "0x1827365E0", Slot = "11")]
		public virtual int GetInputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x0600BC3A RID: 48186 RVA: 0x00298F98 File Offset: 0x00297198
		[Token(Token = "0x600BC3A")]
		[Address(RVA = "0x2736630", Offset = "0x2735630", VA = "0x182736630", Slot = "12")]
		public virtual int GetOutputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x0600BC3B RID: 48187 RVA: 0x00298FB4 File Offset: 0x002971B4
		[Token(Token = "0x600BC3B")]
		[Address(RVA = "0x2736870", Offset = "0x2735870", VA = "0x182736870", 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: 0x0600BC3C RID: 48188 RVA: 0x0029903C File Offset: 0x0029723C
		[Token(Token = "0x600BC3C")]
		[Address(RVA = "0x2736560", Offset = "0x2735560", VA = "0x182736560")]
		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: 0x0600BC3D RID: 48189 RVA: 0x00299098 File Offset: 0x00297298
		[Token(Token = "0x600BC3D")]
		[Address(RVA = "0x27369B0", Offset = "0x27359B0", VA = "0x1827369B0")]
		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: 0x040076A2 RID: 30370
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40076A2")]
		private readonly IRsa core;

		// Token: 0x040076A3 RID: 30371
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40076A3")]
		private RsaKeyParameters key;

		// Token: 0x040076A4 RID: 30372
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40076A4")]
		private BigInteger blindingFactor;

		// Token: 0x040076A5 RID: 30373
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40076A5")]
		private bool forEncryption;
	}
}