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using System;
using System.IO;
namespace Org.BouncyCastle.Bcpg
{
/// <remarks>Generic signature object</remarks>
public class OnePassSignaturePacket
: ContainedPacket
{
private int version;
private int sigType;
private HashAlgorithmTag hashAlgorithm;
private PublicKeyAlgorithmTag keyAlgorithm;
private long keyId;
private int nested;
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)
{
this.version = 3;
this.sigType = sigType;
this.hashAlgorithm = hashAlgorithm;
this.keyAlgorithm = keyAlgorithm;
this.keyId = keyId;
this.nested = (isNested) ? 0 : 1;
}
public int SignatureType
{
get { return sigType; }
}
/// <summary>The encryption algorithm tag.</summary>
public PublicKeyAlgorithmTag KeyAlgorithm
{
get { return keyAlgorithm; }
}
/// <summary>The hash algorithm tag.</summary>
public HashAlgorithmTag HashAlgorithm
{
get { return hashAlgorithm; }
}
public long KeyId
{
get { return keyId; }
}
public override void Encode(BcpgOutputStream bcpgOut)
{
MemoryStream bOut = new MemoryStream();
using (var pOut = new BcpgOutputStream(bOut))
{
pOut.Write((byte)version, (byte)sigType, (byte)hashAlgorithm, (byte)keyAlgorithm);
pOut.WriteLong(keyId);
pOut.WriteByte((byte)nested);
}
bcpgOut.WritePacket(PacketTag.OnePassSignature, bOut.ToArray());
}
}
}
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