init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Asn1/X509/DigestInfo.cs

@@ -0,0 +1,57 @@
+using System;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.X509;
+
+public class DigestInfo : Asn1Encodable
+{
+	private readonly byte[] digest;
+
+	private readonly AlgorithmIdentifier algID;
+
+	public AlgorithmIdentifier AlgorithmID => algID;
+
+	public static DigestInfo GetInstance(Asn1TaggedObject obj, bool explicitly)
+	{
+		return GetInstance(Asn1Sequence.GetInstance(obj, explicitly));
+	}
+
+	public static DigestInfo GetInstance(object obj)
+	{
+		if (obj is DigestInfo)
+		{
+			return (DigestInfo)obj;
+		}
+		if (obj is Asn1Sequence)
+		{
+			return new DigestInfo((Asn1Sequence)obj);
+		}
+		throw new ArgumentException("unknown object in factory: " + Platform.GetTypeName(obj), "obj");
+	}
+
+	public DigestInfo(AlgorithmIdentifier algID, byte[] digest)
+	{
+		this.digest = digest;
+		this.algID = algID;
+	}
+
+	private DigestInfo(Asn1Sequence seq)
+	{
+		if (seq.Count != 2)
+		{
+			throw new ArgumentException("Wrong number of elements in sequence", "seq");
+		}
+		algID = AlgorithmIdentifier.GetInstance(seq[0]);
+		digest = Asn1OctetString.GetInstance(seq[1]).GetOctets();
+	}
+
+	public byte[] GetDigest()
+	{
+		return digest;
+	}
+
+	public override Asn1Object ToAsn1Object()
+	{
+		return new DerSequence(algID, new DerOctetString(digest));
+	}
+}