init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Cms/AuthEnvelopedDataParser.cs

@@ -0,0 +1,107 @@
+namespace Org.BouncyCastle.Asn1.Cms;
+
+public class AuthEnvelopedDataParser
+{
+	private Asn1SequenceParser seq;
+
+	private DerInteger version;
+
+	private IAsn1Convertible nextObject;
+
+	private bool originatorInfoCalled;
+
+	public DerInteger Version => version;
+
+	public AuthEnvelopedDataParser(Asn1SequenceParser seq)
+	{
+		this.seq = seq;
+		version = (DerInteger)seq.ReadObject();
+	}
+
+	public OriginatorInfo GetOriginatorInfo()
+	{
+		originatorInfoCalled = true;
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		if (nextObject is Asn1TaggedObjectParser && ((Asn1TaggedObjectParser)nextObject).TagNo == 0)
+		{
+			Asn1SequenceParser asn1SequenceParser = (Asn1SequenceParser)((Asn1TaggedObjectParser)nextObject).GetObjectParser(16, isExplicit: false);
+			nextObject = null;
+			return OriginatorInfo.GetInstance(asn1SequenceParser.ToAsn1Object());
+		}
+		return null;
+	}
+
+	public Asn1SetParser GetRecipientInfos()
+	{
+		if (!originatorInfoCalled)
+		{
+			GetOriginatorInfo();
+		}
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		Asn1SetParser result = (Asn1SetParser)nextObject;
+		nextObject = null;
+		return result;
+	}
+
+	public EncryptedContentInfoParser GetAuthEncryptedContentInfo()
+	{
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		if (nextObject != null)
+		{
+			Asn1SequenceParser asn1SequenceParser = (Asn1SequenceParser)nextObject;
+			nextObject = null;
+			return new EncryptedContentInfoParser(asn1SequenceParser);
+		}
+		return null;
+	}
+
+	public Asn1SetParser GetAuthAttrs()
+	{
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		if (nextObject is Asn1TaggedObjectParser)
+		{
+			IAsn1Convertible asn1Convertible = nextObject;
+			nextObject = null;
+			return (Asn1SetParser)((Asn1TaggedObjectParser)asn1Convertible).GetObjectParser(17, isExplicit: false);
+		}
+		return null;
+	}
+
+	public Asn1OctetString GetMac()
+	{
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		IAsn1Convertible asn1Convertible = nextObject;
+		nextObject = null;
+		return Asn1OctetString.GetInstance(asn1Convertible.ToAsn1Object());
+	}
+
+	public Asn1SetParser GetUnauthAttrs()
+	{
+		if (nextObject == null)
+		{
+			nextObject = seq.ReadObject();
+		}
+		if (nextObject != null)
+		{
+			IAsn1Convertible asn1Convertible = nextObject;
+			nextObject = null;
+			return (Asn1SetParser)((Asn1TaggedObjectParser)asn1Convertible).GetObjectParser(17, isExplicit: false);
+		}
+		return null;
+	}
+}