Aug2021-Cpp2IL-Dump/Assembly-CSharp/BestHTTP/SecureProtocol/Org/BouncyCastle/Cms/KeyAgreeRecipientInfoGenerator.cs

using System;
using System.Collections;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Cms;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.Cms.Ecc;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Asn1.X509;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.Parameters;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Math;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Security;
using BestHTTP.SecureProtocol.Org.BouncyCastle.Utilities;
using BestHTTP.SecureProtocol.Org.BouncyCastle.X509;
using Cpp2IlInjected;

namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Cms
{
	// Token: 0x02001D59 RID: 7513
	[Token(Token = "0x2001D59")]
	internal class KeyAgreeRecipientInfoGenerator : RecipientInfoGenerator
	{
		// Token: 0x0600BE4E RID: 48718 RVA: 0x002B5840 File Offset: 0x002B3A40
		[Token(Token = "0x600BE4E")]
		[Address(RVA = "0x3F5100", Offset = "0x3F3F00", VA = "0x1803F5100")]
		internal KeyAgreeRecipientInfoGenerator()
		{
		}

		// Token: 0x17001D75 RID: 7541
		// (set) Token: 0x0600BE4F RID: 48719 RVA: 0x002B5854 File Offset: 0x002B3A54
		[Token(Token = "0x17001D75")]
		internal DerObjectIdentifier KeyAgreementOID
		{
			[Token(Token = "0x600BE4F")]
			[Address(RVA = "0x3F7200", Offset = "0x3F6000", VA = "0x1803F7200")]
			set
			{
				this.keyAgreementOID = value;
			}
		}

		// Token: 0x17001D76 RID: 7542
		// (set) Token: 0x0600BE50 RID: 48720 RVA: 0x002B5868 File Offset: 0x002B3A68
		[Token(Token = "0x17001D76")]
		internal DerObjectIdentifier KeyEncryptionOID
		{
			[Token(Token = "0x600BE50")]
			[Address(RVA = "0x3F7210", Offset = "0x3F6010", VA = "0x1803F7210")]
			set
			{
				this.keyEncryptionOID = value;
			}
		}

		// Token: 0x17001D77 RID: 7543
		// (set) Token: 0x0600BE51 RID: 48721 RVA: 0x002B587C File Offset: 0x002B3A7C
		[Token(Token = "0x17001D77")]
		internal ICollection RecipientCerts
		{
			[Token(Token = "0x600BE51")]
			[Address(RVA = "0x20100F0", Offset = "0x200EEF0", VA = "0x1820100F0")]
			set
			{
				IList list = Platform.CreateArrayList(value);
				this.recipientCerts = list;
			}
		}

		// Token: 0x17001D78 RID: 7544
		// (set) Token: 0x0600BE52 RID: 48722 RVA: 0x002B5898 File Offset: 0x002B3A98
		[Token(Token = "0x17001D78")]
		internal AsymmetricCipherKeyPair SenderKeyPair
		{
			[Token(Token = "0x600BE52")]
			[Address(RVA = "0x409C60", Offset = "0x408A60", VA = "0x180409C60")]
			set
			{
				this.senderKeyPair = value;
			}
		}

		// Token: 0x0600BE53 RID: 48723 RVA: 0x002B58AC File Offset: 0x002B3AAC
		[Token(Token = "0x600BE53")]
		[Address(RVA = "0x200F360", Offset = "0x200E160", VA = "0x18200F360", Slot = "4")]
		public RecipientInfo Generate(KeyParameter contentEncryptionKey, SecureRandom random)
		{
			for (;;)
			{
				int num = 0;
				byte[] key = contentEncryptionKey.GetKey();
				AsymmetricCipherKeyPair asymmetricCipherKeyPair = this.senderKeyPair;
				AsymmetricKeyParameter publicParameter = asymmetricCipherKeyPair.publicParameter;
				AsymmetricKeyParameter privateParameter = asymmetricCipherKeyPair.privateParameter;
				OriginatorIdentifierOrKey originatorIdentifierOrKey = new OriginatorIdentifierOrKey(KeyAgreeRecipientInfoGenerator.CreateOriginatorPublicKey(publicParameter));
				string identifier = this.keyAgreementOID.identifier;
				string ecmqvSha1Kdf = CmsEnvelopedGenerator.ECMqvSha1Kdf;
				if (identifier.Equals(ecmqvSha1Kdf))
				{
					IAsymmetricCipherKeyPairGenerator keyPairGenerator = GeneratorUtilities.GetKeyPairGenerator(this.keyAgreementOID);
					if (publicParameter == 0 || publicParameter == 0)
					{
						goto IL_25C;
					}
					int num2 = 0;
					if (num < num2)
					{
						num += num;
						num++;
					}
					int num3 = 0;
					if (num < num3)
					{
						num += num;
						num++;
					}
					OriginatorPublicKey originatorPublicKey;
					int num4;
					MQVuserKeyingMaterial mqvuserKeyingMaterial = new MQVuserKeyingMaterial(originatorPublicKey, num4);
					num4 = 0;
					DerOctetString derOctetString = new DerOctetString(mqvuserKeyingMaterial);
					if (num == 0)
					{
					}
					if (num == 0)
					{
						goto IL_250;
					}
					if (mqvuserKeyingMaterial == 0)
					{
					}
					if (mqvuserKeyingMaterial == 0)
					{
						goto IL_250;
					}
					if (privateParameter == 0)
					{
					}
					if (privateParameter == 0)
					{
						goto IL_250;
					}
				}
				Asn1Encodable[] array = new Asn1Encodable[2];
				DerObjectIdentifier derObjectIdentifier = this.keyEncryptionOID;
				if (derObjectIdentifier != 0)
				{
				}
				array[0] = derObjectIdentifier;
				DerNull instance = DerNull.Instance;
				if (instance != 0)
				{
				}
				array[1] = instance;
				DerSequence derSequence = new DerSequence(array);
				AlgorithmIdentifier algorithmIdentifier = new AlgorithmIdentifier(this.keyAgreementOID, derSequence);
				IList list = this.recipientCerts;
				Asn1EncodableVector asn1EncodableVector;
				if (asn1EncodableVector != 0)
				{
					if (asn1EncodableVector == 0)
					{
					}
					if (asn1EncodableVector != 0)
					{
						break;
					}
				}
				else
				{
					ArrayTypeMismatchException ex;
					if (ex != 0)
					{
					}
					if (num == 0)
					{
						goto Block_9;
					}
				}
			}
			Asn1Object asn1Object;
			TbsCertificateStructure instance2 = TbsCertificateStructure.GetInstance(asn1Object);
			X509Name issuer = instance2.issuer;
			BigInteger value = instance2.serialNumber.Value;
			KeyAgreeRecipientIdentifier keyAgreeRecipientIdentifier = new KeyAgreeRecipientIdentifier(new IssuerAndSerialNumber(issuer, value));
			string identifier2 = this.keyAgreementOID.identifier;
			string ecmqvSha1Kdf2 = CmsEnvelopedGenerator.ECMqvSha1Kdf;
			if (identifier2.Equals(ecmqvSha1Kdf2))
			{
			}
			DerObjectIdentifier derObjectIdentifier2 = this.keyAgreementOID;
			string identifier3 = this.keyEncryptionOID.identifier;
			IBasicAgreement basicAgreementWithKdf = AgreementUtilities.GetBasicAgreementWithKdf(derObjectIdentifier2, identifier3);
			DerObjectIdentifier derObjectIdentifier3 = this.keyEncryptionOID;
			int num5 = 0;
			int defaultKeySize = GeneratorUtilities.GetDefaultKeySize(derObjectIdentifier3);
			num5 += defaultKeySize;
			byte[] array2;
			KeyParameter keyParameter = ParameterUtilities.CreateKeyParameter(this.keyEncryptionOID, array2);
			CmsEnvelopedHelper helper = KeyAgreeRecipientInfoGenerator.Helper;
			DerObjectIdentifier derObjectIdentifier4 = this.keyEncryptionOID;
			int num6 = 0;
			string identifier4 = derObjectIdentifier4.identifier;
			IWrapper wrapper = helper.CreateWrapper(identifier4);
			ParametersWithRandom parametersWithRandom = new ParametersWithRandom(keyParameter, num6);
			Asn1Encodable[] array3 = new Asn1Encodable[1];
			DerOctetString derOctetString2;
			RecipientEncryptedKey recipientEncryptedKey = new RecipientEncryptedKey(keyAgreeRecipientIdentifier, derOctetString2);
			throw new ArrayTypeMismatchException();
			Block_9:
			KeyAgreeRecipientInfo keyAgreeRecipientInfo;
			return new RecipientInfo(keyAgreeRecipientInfo);
			IL_250:
			throw new NullReferenceException();
			IL_25C:
			throw new NullReferenceException();
		}

		// Token: 0x0600BE54 RID: 48724 RVA: 0x002B5B30 File Offset: 0x002B3D30
		[Token(Token = "0x600BE54")]
		[Address(RVA = "0x200F240", Offset = "0x200E040", VA = "0x18200F240")]
		private static OriginatorPublicKey CreateOriginatorPublicKey(AsymmetricKeyParameter publicKey)
		{
			SubjectPublicKeyInfo subjectPublicKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(publicKey);
			Asn1Object asn1Object = subjectPublicKeyInfo.algID.ToAsn1Object();
			byte[] octets = subjectPublicKeyInfo.keyData.GetOctets();
			AlgorithmIdentifier algorithmIdentifier;
			return new OriginatorPublicKey(algorithmIdentifier, octets);
		}

		// Token: 0x0400791C RID: 31004
		[Token(Token = "0x400791C")]
		private static readonly CmsEnvelopedHelper Helper = CmsEnvelopedHelper.Instance;

		// Token: 0x0400791D RID: 31005
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x400791D")]
		private DerObjectIdentifier keyAgreementOID;

		// Token: 0x0400791E RID: 31006
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x400791E")]
		private DerObjectIdentifier keyEncryptionOID;

		// Token: 0x0400791F RID: 31007
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x400791F")]
		private IList recipientCerts;

		// Token: 0x04007920 RID: 31008
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x4007920")]
		private AsymmetricCipherKeyPair senderKeyPair;
	}
}