Jan2021-Cpp2Il-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Crypto/Engines/RsaBlindingEngine.cs

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

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Engines
{
	// Token: 0x020016C7 RID: 5831
	[Token(Token = "0x20016C7")]
	[StructLayout(3)]
	public class RsaBlindingEngine : IAsymmetricBlockCipher
	{
		// Token: 0x06009C8D RID: 40077 RVA: 0x0023864C File Offset: 0x0023684C
		[Token(Token = "0x6009C8D")]
		[Address(RVA = "0x20FD060", Offset = "0x20FBA60", VA = "0x1820FD060")]
		public RsaBlindingEngine()
		{
			RsaCoreEngine rsaCoreEngine = new RsaCoreEngine();
			base..ctor();
			this.core = rsaCoreEngine;
		}

		// Token: 0x06009C8E RID: 40078 RVA: 0x0023866C File Offset: 0x0023686C
		[Token(Token = "0x6009C8E")]
		[Address(RVA = "0x3C3A30", Offset = "0x3C2430", VA = "0x1803C3A30")]
		public RsaBlindingEngine(IRsa rsa)
		{
			this.core = rsa;
		}

		// Token: 0x170018E7 RID: 6375
		// (get) Token: 0x06009C8F RID: 40079 RVA: 0x00238688 File Offset: 0x00236888
		[Token(Token = "0x170018E7")]
		public virtual string AlgorithmName
		{
			[Token(Token = "0x6009C8F")]
			[Address(RVA = "0x20FD0C0", Offset = "0x20FBAC0", VA = "0x1820FD0C0", Slot = "9")]
			get
			{
				return "RSA";
			}
		}

		// Token: 0x06009C90 RID: 40080 RVA: 0x0023869C File Offset: 0x0023689C
		[Token(Token = "0x6009C90")]
		[Address(RVA = "0x20FCCC0", Offset = "0x20FB6C0", VA = "0x1820FCCC0", 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: 0x06009C91 RID: 40081 RVA: 0x002386F0 File Offset: 0x002368F0
		[Token(Token = "0x6009C91")]
		[Address(RVA = "0x20FCC20", Offset = "0x20FB620", VA = "0x1820FCC20", Slot = "11")]
		public virtual int GetInputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x06009C92 RID: 40082 RVA: 0x0023870C File Offset: 0x0023690C
		[Token(Token = "0x6009C92")]
		[Address(RVA = "0x20FCC70", Offset = "0x20FB670", VA = "0x1820FCC70", Slot = "12")]
		public virtual int GetOutputBlockSize()
		{
			IRsa rsa = this.core;
			throw new NullReferenceException();
		}

		// Token: 0x06009C93 RID: 40083 RVA: 0x00238728 File Offset: 0x00236928
		[Token(Token = "0x6009C93")]
		[Address(RVA = "0x20FCEB0", Offset = "0x20FB8B0", VA = "0x1820FCEB0", 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: 0x06009C94 RID: 40084 RVA: 0x002387B0 File Offset: 0x002369B0
		[Token(Token = "0x6009C94")]
		[Address(RVA = "0x20FCBA0", Offset = "0x20FB5A0", VA = "0x1820FCBA0")]
		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: 0x06009C95 RID: 40085 RVA: 0x0023880C File Offset: 0x00236A0C
		[Token(Token = "0x6009C95")]
		[Address(RVA = "0x20FCFF0", Offset = "0x20FB9F0", VA = "0x1820FCFF0")]
		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: 0x040066A6 RID: 26278
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40066A6")]
		private readonly IRsa core;

		// Token: 0x040066A7 RID: 26279
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40066A7")]
		private RsaKeyParameters key;

		// Token: 0x040066A8 RID: 26280
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40066A8")]
		private BigInteger blindingFactor;

		// Token: 0x040066A9 RID: 26281
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40066A9")]
		private bool forEncryption;
	}
}