using System; using System.Collections; using System.IO; 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.Pkcs; using BestHTTP.SecureProtocol.Org.BouncyCastle.Security; using Cpp2IlInjected; namespace BestHTTP.SecureProtocol.Org.BouncyCastle.Cms { // Token: 0x02001D5A RID: 7514 [Token(Token = "0x2001D5A")] public class KeyAgreeRecipientInformation : RecipientInformation { // Token: 0x0600BE56 RID: 48726 RVA: 0x002B5B84 File Offset: 0x002B3D84 [Token(Token = "0x600BE56")] [Address(RVA = "0x2010CC0", Offset = "0x200FAC0", VA = "0x182010CC0")] internal static void ReadRecipientInfo(IList infos, KeyAgreeRecipientInfo info, CmsSecureReadable secureReadable) { int num = 0; IEnumerator enumerator = info.recipientEncryptedKeys.GetEnumerator(); if (enumerator != 0) { if (num < enumerator) { num += num; num++; } ulong num2; enumerator += num2; if (enumerator == 0 || enumerator == 0) { throw new NullReferenceException(); } RecipientID recipientID = new RecipientID(); RecipientEncryptedKey recipientEncryptedKey; KeyAgreeRecipientIdentifier identifier = recipientEncryptedKey.identifier; if (identifier.issuerSerial == 0) { Stream octetStream = identifier.rKeyID.subjectKeyIdentifier.GetOctetStream(); } byte[] authorityKeyIdentifier = recipientID.authorityKeyIdentifier; recipientID.issuer = authorityKeyIdentifier; int basicConstraints = recipientID.basicConstraints; BigInteger bigInteger; recipientID.serialNumber = bigInteger; } KeyAgreeRecipientInformation keyAgreeRecipientInformation; if (keyAgreeRecipientInformation != 0) { } if (num == 0) { return; } throw new NullReferenceException(); } // Token: 0x0600BE57 RID: 48727 RVA: 0x002B5C68 File Offset: 0x002B3E68 [Token(Token = "0x600BE57")] [Address(RVA = "0x20111A0", Offset = "0x200FFA0", VA = "0x1820111A0")] internal KeyAgreeRecipientInformation(KeyAgreeRecipientInfo info, RecipientID rid, Asn1OctetString encryptedKey, CmsSecureReadable secureReadable) { this.rid = rid; this.encryptedKey = encryptedKey; this.info = info; } // Token: 0x0600BE58 RID: 48728 RVA: 0x002B5C90 File Offset: 0x002B3E90 [Token(Token = "0x600BE58")] [Address(RVA = "0x2010760", Offset = "0x200F560", VA = "0x182010760")] private AsymmetricKeyParameter GetSenderPublicKey(AsymmetricKeyParameter receiverPrivateKey, OriginatorIdentifierOrKey originator) { OriginatorPublicKey originatorPublicKey = originator.OriginatorPublicKey; if (originatorPublicKey != 0) { return this.GetPublicKeyFromOriginatorPublicKey(receiverPrivateKey, originatorPublicKey); } OriginatorID originatorID = new OriginatorID(); IssuerAndSerialNumber issuerAndSerialNumber = originator.IssuerAndSerialNumber; if (issuerAndSerialNumber == 0) { throw new NullReferenceException(); } throw new NullReferenceException(); } // Token: 0x0600BE59 RID: 48729 RVA: 0x002B5D40 File Offset: 0x002B3F40 [Token(Token = "0x600BE59")] [Address(RVA = "0x20106A0", Offset = "0x200F4A0", VA = "0x1820106A0")] private AsymmetricKeyParameter GetPublicKeyFromOriginatorPublicKey(AsymmetricKeyParameter receiverPrivateKey, OriginatorPublicKey originatorPublicKey) { bool hasPublicKey = PrivateKeyInfoFactory.CreatePrivateKeyInfo(receiverPrivateKey).HasPublicKey; byte[] octets = originatorPublicKey.mPublicKey.GetOctets(); SubjectPublicKeyInfo subjectPublicKeyInfo; return PublicKeyFactory.CreateKey(subjectPublicKeyInfo); } // Token: 0x0600BE5A RID: 48730 RVA: 0x002B5D74 File Offset: 0x002B3F74 [Token(Token = "0x600BE5A")] [Address(RVA = "0x2010640", Offset = "0x200F440", VA = "0x182010640")] private AsymmetricKeyParameter GetPublicKeyFromOriginatorID(OriginatorID origID) { /* An exception occurred when decompiling this method (0600BE5A) ICSharpCode.Decompiler.DecompilerException: Error decompiling BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.AsymmetricKeyParameter BestHTTP.SecureProtocol.Org.BouncyCastle.Cms.KeyAgreeRecipientInformation::GetPublicKeyFromOriginatorID(BestHTTP.SecureProtocol.Org.BouncyCastle.Cms.OriginatorID) ---> System.Exception: Basic block has to end with unconditional control flow. { Block_0: stloc:CmsException(var_0_0A, newobj:CmsException(CmsException::.ctor, ldstr:string("No support for 'originator' as IssuerAndSerialNumber or SubjectKeyIdentifier"))) } at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852 at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88 --- End of inner exception stack trace --- at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92 at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1663 */; } // Token: 0x0600BE5B RID: 48731 RVA: 0x002B5D8C File Offset: 0x002B3F8C [Token(Token = "0x600BE5B")] [Address(RVA = "0x2010160", Offset = "0x200EF60", VA = "0x182010160")] private KeyParameter CalculateAgreedWrapKey(string wrapAlg, AsymmetricKeyParameter senderPublicKey, AsymmetricKeyParameter receiverPrivateKey) { for (;;) { Asn1Object asn1Object = this.keyEncAlg.ToAsn1Object(); string ecmqvSha1Kdf = CmsEnvelopedGenerator.ECMqvSha1Kdf; bool flag; if (!flag) { break; } Stream octetStream = this.info.ukm.GetOctetStream(); Asn1Object asn1Object2; OriginatorPublicKey ephemeralPublicKey = MQVuserKeyingMaterial.GetInstance(asn1Object2).ephemeralPublicKey; AsymmetricKeyParameter publicKeyFromOriginatorPublicKey = this.GetPublicKeyFromOriginatorPublicKey(receiverPrivateKey, ephemeralPublicKey); if (publicKeyFromOriginatorPublicKey == 0) { } if (publicKeyFromOriginatorPublicKey != 0) { if (senderPublicKey == 0) { } if (senderPublicKey != 0) { if (receiverPrivateKey == 0) { } if (receiverPrivateKey != 0 && receiverPrivateKey != 0) { break; } } } } int num = 0; int defaultKeySize = GeneratorUtilities.GetDefaultKeySize(wrapAlg); num += defaultKeySize; byte[] array; return ParameterUtilities.CreateKeyParameter(wrapAlg, array); } // Token: 0x0600BE5C RID: 48732 RVA: 0x002B5E24 File Offset: 0x002B4024 [Token(Token = "0x600BE5C")] [Address(RVA = "0x2011070", Offset = "0x200FE70", VA = "0x182011070")] private KeyParameter UnwrapSessionKey(string wrapAlg, KeyParameter agreedKey) { Stream octetStream = this.encryptedKey.GetOctetStream(); IWrapper wrapper = WrapperUtilities.GetWrapper(wrapAlg); Stream.ReadWriteTask activeReadWriteTask = octetStream._activeReadWriteTask; string contentAlgorithmName = base.GetContentAlgorithmName(); KeyParameter keyParameter; return keyParameter; } // Token: 0x0600BE5D RID: 48733 RVA: 0x002B5E5C File Offset: 0x002B405C [Token(Token = "0x600BE5D")] [Address(RVA = "0x20108C0", Offset = "0x200F6C0", VA = "0x1820108C0")] internal KeyParameter GetSessionKey(AsymmetricKeyParameter receiverPrivateKey) { Asn1SequenceParser parser = Asn1Sequence.GetInstance(this.keyEncAlg.ObjectID).Parser; DerObjectIdentifier derObjectIdentifier; string identifier = derObjectIdentifier.identifier; OriginatorIdentifierOrKey originator = this.info.originator; OriginatorPublicKey originatorPublicKey = originator.OriginatorPublicKey; if (originatorPublicKey != 0) { AsymmetricKeyParameter publicKeyFromOriginatorPublicKey = this.GetPublicKeyFromOriginatorPublicKey(receiverPrivateKey, originatorPublicKey); KeyParameter keyParameter = this.CalculateAgreedWrapKey(identifier, publicKeyFromOriginatorPublicKey, receiverPrivateKey); Stream octetStream = this.encryptedKey.GetOctetStream(); IWrapper wrapper = WrapperUtilities.GetWrapper(identifier); Stream.ReadWriteTask activeReadWriteTask = octetStream._activeReadWriteTask; string contentAlgorithmName = base.GetContentAlgorithmName(); KeyParameter keyParameter2; return keyParameter2; } OriginatorID originatorID = new OriginatorID(); IssuerAndSerialNumber issuerAndSerialNumber = originator.IssuerAndSerialNumber; if (issuerAndSerialNumber == 0) { throw new NullReferenceException(); } throw new NullReferenceException(); } // Token: 0x0600BE5E RID: 48734 RVA: 0x002B5FC8 File Offset: 0x002B41C8 [Token(Token = "0x600BE5E")] [Address(RVA = "0x20104E0", Offset = "0x200F2E0", VA = "0x1820104E0", Slot = "4")] public override CmsTypedStream GetContentStream(ICipherParameters key) { /* An exception occurred when decompiling this method (0600BE5E) ICSharpCode.Decompiler.DecompilerException: Error decompiling BestHTTP.SecureProtocol.Org.BouncyCastle.Cms.CmsTypedStream BestHTTP.SecureProtocol.Org.BouncyCastle.Cms.KeyAgreeRecipientInformation::GetContentStream(BestHTTP.SecureProtocol.Org.BouncyCastle.Crypto.ICipherParameters) ---> System.Exception: Basic block has to end with unconditional control flow. { IL_18: stloc:ArgumentException(var_3_27, newobj:ArgumentException(ArgumentException::.ctor, ldstr:string("KeyAgreement requires asymmetric key"), ldstr:string("key"))) stloc:ArgumentException(var_4_37, newobj:ArgumentException(ArgumentException::.ctor, ldstr:string("Expected private key"), ldstr:string("key"))) } at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852 at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123 at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88 --- End of inner exception stack trace --- at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92 at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1663 */; } // Token: 0x04007921 RID: 31009 [FieldOffset(Offset = "0x30")] [Token(Token = "0x4007921")] private KeyAgreeRecipientInfo info; // Token: 0x04007922 RID: 31010 [FieldOffset(Offset = "0x38")] [Token(Token = "0x4007922")] private Asn1OctetString encryptedKey; } }