27Aug2021-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: 0x02001E39 RID: 7737
	[Token(Token = "0x2001E39")]
	internal class KeyAgreeRecipientInfoGenerator : RecipientInfoGenerator
	{
		// Token: 0x0600C21C RID: 49692 RVA: 0x002BE138 File Offset: 0x002BC338
		[Token(Token = "0x600C21C")]
		[Address(RVA = "0x412370", Offset = "0x411370", VA = "0x180412370")]
		internal KeyAgreeRecipientInfoGenerator()
		{
		}

		// Token: 0x17001E12 RID: 7698
		// (set) Token: 0x0600C21D RID: 49693 RVA: 0x002BE14C File Offset: 0x002BC34C
		[Token(Token = "0x17001E12")]
		internal DerObjectIdentifier KeyAgreementOID
		{
			[Token(Token = "0x600C21D")]
			[Address(RVA = "0x415800", Offset = "0x414800", VA = "0x180415800")]
			set
			{
				this.keyAgreementOID = value;
			}
		}

		// Token: 0x17001E13 RID: 7699
		// (set) Token: 0x0600C21E RID: 49694 RVA: 0x002BE160 File Offset: 0x002BC360
		[Token(Token = "0x17001E13")]
		internal DerObjectIdentifier KeyEncryptionOID
		{
			[Token(Token = "0x600C21E")]
			[Address(RVA = "0x4157F0", Offset = "0x4147F0", VA = "0x1804157F0")]
			set
			{
				this.keyEncryptionOID = value;
			}
		}

		// Token: 0x17001E14 RID: 7700
		// (set) Token: 0x0600C21F RID: 49695 RVA: 0x002BE174 File Offset: 0x002BC374
		[Token(Token = "0x17001E14")]
		internal ICollection RecipientCerts
		{
			[Token(Token = "0x600C21F")]
			[Address(RVA = "0x2930BF0", Offset = "0x292FBF0", VA = "0x182930BF0")]
			set
			{
				IList list = Platform.CreateArrayList(value);
				this.recipientCerts = list;
			}
		}

		// Token: 0x17001E15 RID: 7701
		// (set) Token: 0x0600C220 RID: 49696 RVA: 0x002BE190 File Offset: 0x002BC390
		[Token(Token = "0x17001E15")]
		internal AsymmetricCipherKeyPair SenderKeyPair
		{
			[Token(Token = "0x600C220")]
			[Address(RVA = "0x415820", Offset = "0x414820", VA = "0x180415820")]
			set
			{
				this.senderKeyPair = value;
			}
		}

		// Token: 0x0600C221 RID: 49697 RVA: 0x002BE1A4 File Offset: 0x002BC3A4
		[Token(Token = "0x600C221")]
		[Address(RVA = "0x292FE60", Offset = "0x292EE60", VA = "0x18292FE60", 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: 0x0600C222 RID: 49698 RVA: 0x002BE428 File Offset: 0x002BC628
		[Token(Token = "0x600C222")]
		[Address(RVA = "0x292FD40", Offset = "0x292ED40", VA = "0x18292FD40")]
		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: 0x04007AD5 RID: 31445
		[Token(Token = "0x4007AD5")]
		private static readonly CmsEnvelopedHelper Helper = CmsEnvelopedHelper.Instance;

		// Token: 0x04007AD6 RID: 31446
		[FieldOffset(Offset = "0x10")]
		[Token(Token = "0x4007AD6")]
		private DerObjectIdentifier keyAgreementOID;

		// Token: 0x04007AD7 RID: 31447
		[FieldOffset(Offset = "0x18")]
		[Token(Token = "0x4007AD7")]
		private DerObjectIdentifier keyEncryptionOID;

		// Token: 0x04007AD8 RID: 31448
		[FieldOffset(Offset = "0x20")]
		[Token(Token = "0x4007AD8")]
		private IList recipientCerts;

		// Token: 0x04007AD9 RID: 31449
		[FieldOffset(Offset = "0x28")]
		[Token(Token = "0x4007AD9")]
		private AsymmetricCipherKeyPair senderKeyPair;
	}
}