PublicKeyPacket
using Org.BouncyCastle.Utilities.Date;
using System;
using System.IO;
namespace Org.BouncyCastle.Bcpg
{
public class PublicKeyPacket : ContainedPacket
{
private int version;
private long time;
private int validDays;
private PublicKeyAlgorithmTag algorithm;
private IBcpgKey key;
public virtual int Version => version;
public virtual PublicKeyAlgorithmTag Algorithm => algorithm;
public virtual int ValidDays => validDays;
public virtual IBcpgKey Key => key;
internal PublicKeyPacket(BcpgInputStream bcpgIn)
{
version = bcpgIn.RequireByte();
time = StreamUtilities.RequireUInt32BE(bcpgIn);
if (version <= 3)
validDays = StreamUtilities.RequireUInt16BE(bcpgIn);
algorithm = (PublicKeyAlgorithmTag)bcpgIn.RequireByte();
PublicKeyAlgorithmTag publicKeyAlgorithmTag = algorithm;
if ((uint)(publicKeyAlgorithmTag - 1) > 2) {
switch (publicKeyAlgorithmTag) {
case PublicKeyAlgorithmTag.Dsa:
key = new DsaPublicBcpgKey(bcpgIn);
break;
case PublicKeyAlgorithmTag.ElGamalEncrypt:
case PublicKeyAlgorithmTag.ElGamalGeneral:
key = new ElGamalPublicBcpgKey(bcpgIn);
break;
case PublicKeyAlgorithmTag.ECDH:
key = new ECDHPublicBcpgKey(bcpgIn);
break;
case PublicKeyAlgorithmTag.ECDsa:
key = new ECDsaPublicBcpgKey(bcpgIn);
break;
case PublicKeyAlgorithmTag.EdDsa:
key = new EdDsaPublicBcpgKey(bcpgIn);
break;
default:
throw new IOException("unknown PGP public key algorithm encountered");
}
} else
key = new RsaPublicBcpgKey(bcpgIn);
}
public PublicKeyPacket(PublicKeyAlgorithmTag algorithm, DateTime time, IBcpgKey key)
{
version = 4;
this.time = DateTimeUtilities.DateTimeToUnixMs(time) / 1000;
this.algorithm = algorithm;
this.key = key;
}
public virtual DateTime GetTime()
{
return DateTimeUtilities.UnixMsToDateTime(time * 1000);
}
public virtual byte[] GetEncodedContents()
{
MemoryStream memoryStream = new MemoryStream();
using (BcpgOutputStream bcpgOutputStream = new BcpgOutputStream(memoryStream)) {
bcpgOutputStream.WriteByte((byte)version);
StreamUtilities.WriteUInt32BE(bcpgOutputStream, (uint)time);
if (version <= 3)
StreamUtilities.WriteUInt16BE(bcpgOutputStream, (ushort)validDays);
bcpgOutputStream.WriteByte((byte)algorithm);
((BcpgObject)key).Encode(bcpgOutputStream);
}
return memoryStream.ToArray();
}
public override void Encode(BcpgOutputStream bcpgOut)
{
bcpgOut.WritePacket(PacketTag.PublicKey, GetEncodedContents());
}
}
}