init commit

output/Libraries/BouncyCastle.Crypto/Org/BouncyCastle/Bcpg/OnePassSignaturePacket.cs

@@ -0,0 +1,63 @@
+using System.IO;
+
+namespace Org.BouncyCastle.Bcpg;
+
+public class OnePassSignaturePacket : ContainedPacket
+{
+	private int version;
+
+	private int sigType;
+
+	private HashAlgorithmTag hashAlgorithm;
+
+	private PublicKeyAlgorithmTag keyAlgorithm;
+
+	private long keyId;
+
+	private int nested;
+
+	public int SignatureType => sigType;
+
+	public PublicKeyAlgorithmTag KeyAlgorithm => keyAlgorithm;
+
+	public HashAlgorithmTag HashAlgorithm => hashAlgorithm;
+
+	public long KeyId => keyId;
+
+	internal OnePassSignaturePacket(BcpgInputStream bcpgIn)
+	{
+		version = bcpgIn.ReadByte();
+		sigType = bcpgIn.ReadByte();
+		hashAlgorithm = (HashAlgorithmTag)bcpgIn.ReadByte();
+		keyAlgorithm = (PublicKeyAlgorithmTag)bcpgIn.ReadByte();
+		keyId |= (long)bcpgIn.ReadByte() << 56;
+		keyId |= (long)bcpgIn.ReadByte() << 48;
+		keyId |= (long)bcpgIn.ReadByte() << 40;
+		keyId |= (long)bcpgIn.ReadByte() << 32;
+		keyId |= (long)bcpgIn.ReadByte() << 24;
+		keyId |= (long)bcpgIn.ReadByte() << 16;
+		keyId |= (long)bcpgIn.ReadByte() << 8;
+		keyId |= (uint)bcpgIn.ReadByte();
+		nested = bcpgIn.ReadByte();
+	}
+
+	public OnePassSignaturePacket(int sigType, HashAlgorithmTag hashAlgorithm, PublicKeyAlgorithmTag keyAlgorithm, long keyId, bool isNested)
+	{
+		version = 3;
+		this.sigType = sigType;
+		this.hashAlgorithm = hashAlgorithm;
+		this.keyAlgorithm = keyAlgorithm;
+		this.keyId = keyId;
+		nested = ((!isNested) ? 1 : 0);
+	}
+
+	public override void Encode(BcpgOutputStream bcpgOut)
+	{
+		MemoryStream memoryStream = new MemoryStream();
+		BcpgOutputStream bcpgOutputStream = new BcpgOutputStream(memoryStream);
+		bcpgOutputStream.Write((byte)version, (byte)sigType, (byte)hashAlgorithm, (byte)keyAlgorithm);
+		bcpgOutputStream.WriteLong(keyId);
+		bcpgOutputStream.WriteByte((byte)nested);
+		bcpgOut.WritePacket(PacketTag.OnePassSignature, memoryStream.ToArray(), oldFormat: true);
+	}
+}