public override void Parse(TreeBuilder tree)
{
tree.SetBookMark();
Version = tree.ReadByte("Version");
tree.ReadFormatted("Creation Time", BlockFormat.UnixTime);
if (Version == 2 || Version == 3 || Version == 4)
{
if (Version != 4)
{
tree.ReadNumber("Days Valid", 2);
}
}
else
{
throw new NotImplementedException("Unknown Public Key Packet Version Code: " + Version.ToString());
}
byte AlgoCode = tree.ReadByte("Public Key Algorithm", PKAlgorithmTypes.Get);
PublicKeyAlgorithm = PKAlgorithm.CreatePKAlgorithm(AlgoCode);
if (PublicKeyAlgorithm == null)
{
tree.ReadBytes("Unknown Public Key Algorithm");
return;
}
PublicKeyAlgorithm.LoadPublicKey(tree);
PacketDataPublicKey = tree.ReadBytesFromBookMark();
if (Version < 4)
{
// Only RSA is supported
var ModN = ((RSA)PublicKeyAlgorithm).ModN;
//KeyId = BitConverter.ToString(ModN, ModN.Length - 8);
KeyId = ModN.SubArray(ModN.Length - 8, 8);
}
else
{
int l = PacketDataPublicKey.Length;
SHA1 shaM = new SHA1Managed();
byte[] HashContext = new byte[l + 3];
HashContext[0] = 0x99;
HashContext[1] = (byte)((l & 0xFF00) >> 8);
HashContext[2] = (byte)(l & 0x00FF);
Array.Copy(PacketDataPublicKey, 0, HashContext, 3, l);
byte[] result = shaM.ComputeHash(HashContext);
//KeyId = BitConverter.ToString(result, result.Length - 8);
KeyId = result.SubArray(result.Length - 8, 8);
}
tree.AddCalculated("Key Id", BitConverter.ToString(KeyId), KeyId);
}