add all

Packages/com.tivadar.best.http/Runtime/3rdParty/BouncyCastle/asn1/cms/AuthEnvelopedDataParser.cs

@@ -0,0 +1,155 @@
+#if !BESTHTTP_DISABLE_ALTERNATE_SSL && (!UNITY_WEBGL || UNITY_EDITOR)
+#pragma warning disable
+using System;
+
+namespace Best.HTTP.SecureProtocol.Org.BouncyCastle.Asn1.Cms
+{
+	/**
+	 * Produce an object suitable for an Asn1OutputStream.
+	 * 
+	 * <pre>
+	 * AuthEnvelopedData ::= SEQUENCE {
+	 *   version CMSVersion,
+	 *   originatorInfo [0] IMPLICIT OriginatorInfo OPTIONAL,
+	 *   recipientInfos RecipientInfos,
+	 *   authEncryptedContentInfo EncryptedContentInfo,
+	 *   authAttrs [1] IMPLICIT AuthAttributes OPTIONAL,
+	 *   mac MessageAuthenticationCode,
+	 *   unauthAttrs [2] IMPLICIT UnauthAttributes OPTIONAL }
+	 * </pre>
+	*/
+	public class AuthEnvelopedDataParser
+	{
+		private Asn1SequenceParser	seq;
+		private DerInteger			version;
+		private IAsn1Convertible	nextObject;
+		private bool				originatorInfoCalled;
+        private bool                isData;
+
+		public AuthEnvelopedDataParser(
+			Asn1SequenceParser	seq)
+		{
+			this.seq = seq;
+
+			// "It MUST be set to 0."
+			this.version = (DerInteger)seq.ReadObject();
+			if (!version.HasValue(0))
+				throw new Asn1ParsingException("AuthEnvelopedData version number must be 0");
+		}
+
+		public DerInteger Version
+		{
+			get { return version; }
+		}
+
+		public OriginatorInfo GetOriginatorInfo()
+		{
+			originatorInfoCalled = true;
+
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			if (nextObject is Asn1TaggedObjectParser o)
+			{
+				if (o.HasContextTag(0))
+				{
+					Asn1SequenceParser originatorInfo = (Asn1SequenceParser)o.ParseBaseUniversal(false, Asn1Tags.Sequence);
+					nextObject = null;
+					return OriginatorInfo.GetInstance(originatorInfo.ToAsn1Object());
+				}
+			}
+
+			return null;
+		}
+
+		public Asn1SetParser GetRecipientInfos()
+		{
+			if (!originatorInfoCalled)
+			{
+				GetOriginatorInfo();
+			}
+
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			Asn1SetParser recipientInfos = (Asn1SetParser)nextObject;
+			nextObject = null;
+			return recipientInfos;
+		}
+
+		public EncryptedContentInfoParser GetAuthEncryptedContentInfo() 
+		{
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			if (nextObject != null)
+			{
+				Asn1SequenceParser o = (Asn1SequenceParser) nextObject;
+				nextObject = null;
+                EncryptedContentInfoParser encryptedContentInfoParser = new EncryptedContentInfoParser(o);
+                isData = CmsObjectIdentifiers.Data.Equals(encryptedContentInfoParser.ContentType);
+                return encryptedContentInfoParser;
+			}
+
+			return null;
+		}
+		
+		public Asn1SetParser GetAuthAttrs()
+		{
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			if (nextObject is Asn1TaggedObjectParser o)
+			{
+				nextObject = null;
+				return (Asn1SetParser)Asn1Utilities.ParseContextBaseUniversal(o, 1, false, Asn1Tags.SetOf);
+			}
+
+			// "The authAttrs MUST be present if the content type carried in EncryptedContentInfo is not id-data."
+			if (!isData)
+				throw new Asn1ParsingException("authAttrs must be present with non-data content");
+
+			return null;
+		}
+		
+		public Asn1OctetString GetMac()
+		{
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			IAsn1Convertible o = nextObject;
+			nextObject = null;
+
+			return Asn1OctetString.GetInstance(o.ToAsn1Object());
+		}
+		
+		public Asn1SetParser GetUnauthAttrs()
+		{
+			if (nextObject == null)
+			{
+				nextObject = seq.ReadObject();
+			}
+
+			if (nextObject != null)
+			{
+				Asn1TaggedObjectParser o = (Asn1TaggedObjectParser)nextObject;
+				nextObject = null;
+				return (Asn1SetParser)Asn1Utilities.ParseContextBaseUniversal(o, 2, false, Asn1Tags.SetOf);
+			}
+
+			return null;
+		}
+	}
+}
+#pragma warning restore
+#endif