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);
}
public override void Parse(TreeBuilder tree)
{
base.Parse(tree);
bool IsEncrypted = true;
tree.SetBookMark();
var S2K = new S2K
{
S2KUsage = tree.ReadByte()
};
if (S2K.S2KUsage == 254 || S2K.S2KUsage == 255)
{
S2K.SymAlgo = tree.ReadByte("Symmetric Algorithm", SymmetricAlgorithmTypes.Get);
byte S2KSpecifier = tree.ReadByte("S2K Specifier", S2KTypes.Get);
if (S2KSpecifier != S2KTypes.Salted && S2KSpecifier != S2KTypes.Simple && S2KSpecifier != S2KTypes.IteratedAndSalted)
{
//tree.AddCalculated("Invalid S2K", S2KSpecifier.ToString());
tree.AddCalculated("Unable to Process", S2KSpecifier.ToString(), ByteBlockType.CalculatedError);
return;
}
S2K.HashAlgorithm = tree.ReadByte("Hash Algorithm", HashAlgorithmTypes.Get);
if (S2KSpecifier == S2KTypes.Salted || S2KSpecifier == S2KTypes.IteratedAndSalted)
{
S2K.Salt = tree.ReadBytes("Salt", 8);
if (S2KSpecifier == S2KTypes.IteratedAndSalted)
{
byte CodedCount = tree.ReadByte("Coded Iteration");
S2K.ByteCount = (16 + (CodedCount & 15)) << ((CodedCount >> 4) + 6);
}
}
int BlockSizeBytes = SymmetricAlgorithmTypes.GetBlockSize(S2K.SymAlgo) / 8;
S2K.IV = tree.ReadBytes("IV", BlockSizeBytes);
}
else
{
byte SymAlgo = S2K.S2KUsage;
S2K.SymAlgo = SymAlgo;
if (SymAlgo != 0)
{
tree.GoToBookMark();
tree.ReadByte("Symmetric Algorithm", SymmetricAlgorithmTypes.Get);
int BlockSize = SymmetricAlgorithmTypes.GetBlockSize(SymAlgo) / 8;
S2K.IV = tree.ReadBytes("IV", BlockSize);
}
else
{
IsEncrypted = false;
}
}
PublicKeyAlgorithm.S2K = S2K;
if (IsEncrypted)
{
byte[] Encrypted = tree.ReadBytes("Encrypted Secret Key");
PublicKeyAlgorithm.EncryptedPrivateKey = Encrypted;
tree.CurrentBlock.ProcessBlock += ExtractPrivateKey;
SecretKeyNode = tree.CurrentBlock;
}
else
{
byte[] ClearBytes = tree.ReadBytes("Unencrypted Secret Key");
var SecBlockClear = PublicKeyAlgorithm.SetPrivate(ClearBytes);
tree.AddChild(PublicKeyAlgorithm.GetPrivateByteBlocks());
}
}