init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/Asn1Object.cs

@@ -0,0 +1,59 @@
+using System;
+using System.IO;
+
+namespace Org.BouncyCastle.Asn1;
+
+public abstract class Asn1Object : Asn1Encodable
+{
+	public static Asn1Object FromByteArray(byte[] data)
+	{
+		try
+		{
+			MemoryStream memoryStream = new MemoryStream(data, writable: false);
+			Asn1InputStream asn1InputStream = new Asn1InputStream(memoryStream, data.Length);
+			Asn1Object result = asn1InputStream.ReadObject();
+			if (memoryStream.Position != memoryStream.Length)
+			{
+				throw new IOException("extra data found after object");
+			}
+			return result;
+		}
+		catch (InvalidCastException)
+		{
+			throw new IOException("cannot recognise object in byte array");
+		}
+	}
+
+	public static Asn1Object FromStream(Stream inStr)
+	{
+		try
+		{
+			return new Asn1InputStream(inStr).ReadObject();
+		}
+		catch (InvalidCastException)
+		{
+			throw new IOException("cannot recognise object in stream");
+		}
+	}
+
+	public sealed override Asn1Object ToAsn1Object()
+	{
+		return this;
+	}
+
+	internal abstract void Encode(DerOutputStream derOut);
+
+	protected abstract bool Asn1Equals(Asn1Object asn1Object);
+
+	protected abstract int Asn1GetHashCode();
+
+	internal bool CallAsn1Equals(Asn1Object obj)
+	{
+		return Asn1Equals(obj);
+	}
+
+	internal int CallAsn1GetHashCode()
+	{
+		return Asn1GetHashCode();
+	}
+}