public byte[] GetKey(string Password)
{
int KeySize = SymmetricAlgorithmTypes.GetKeySize(SymAlgo);
int DesiredBytes = (byte)(KeySize / 8);
HashAlgorithm HashAlgo = HashAlgorithmTypes.GetHashAlgoManaged(HashAlgorithm);
byte[] Key = GetSaltedIterated(HashAlgo, DesiredBytes, Salt, Encoding.ASCII.GetBytes(Password), ByteCount);
return(Key);
}
private static HashAlgorithm[] GetHashAlgorithms(Stack <OnePassSignaturePacket> Stack)
{
byte[] HashAlgorithmCodes = Stack.ToArray().Select(x => x.HashAlgorithm).Distinct().ToArray();
var HashAlgorithms = HashAlgorithmCodes.Select(code =>
{
try
{
return(HashAlgorithmTypes.GetHashAlgoManaged(code));
}
catch { return(null); }
})
.Where(algo => algo != null)
.ToArray();
return(HashAlgorithms);
}
public static ByteBlock Process(string PGPFile)
{
var Root = new ByteBlock();
PGPPacket pgp;
PublicKeyPacket PrimaryKeyPacket = null;
PublicKeyPacket SubKeyPacket = null;
UserIDPacket UIDPacket = null;
Stack <OnePassSignaturePacket> OPSigPacketStack = new Stack <OnePassSignaturePacket>();
HashAlgorithm[] HashAlgorithms = null;
using (var PacketReader = new PGPReader(PGPFile))
{
PacketReader.DoIndexUpdate += IndexUpdate;
while ((pgp = PacketReader.ReadNextPacket()) != null)
{
TreeBuilder Tree = new TreeBuilder(PacketReader);
pgp.Parse(Tree);
if (pgp is LiteralDataPacket litPgp)
{
if (HashAlgorithms == null)
{
HashAlgorithms = GetHashAlgorithms(OPSigPacketStack);
}
litPgp.ProgressUpdate += StatusUpdate;
litPgp.DoHash(PacketReader, HashAlgorithms);
}
else
{
if (pgp is OnePassSignaturePacket OPSig)
{
OPSigPacketStack.Push(OPSig);
}
else if (pgp.PacketTag == 6 || pgp.PacketTag == 5)
{
PrimaryKeyPacket = (PublicKeyPacket)pgp;
}
else if (pgp is UserIDPacket)
{
UIDPacket = (UserIDPacket)pgp;
}
else if (pgp.PacketTag == 14 || pgp.PacketTag == 7)
{
SubKeyPacket = (PublicKeyPacket)pgp;
}
else if (pgp is SignaturePacket Sig)
{
if ((Sig.SignatureType == 0x18 || Sig.SignatureType == 0x19) && PrimaryKeyPacket != null && SubKeyPacket != null && SubKeyPacket.PacketDataPublicKey != null)
{
Sig.GenerateSubKeyBindingHash(PrimaryKeyPacket, SubKeyPacket);
}
if (Sig.SignatureType >= 0x10 && Sig.SignatureType <= 0x13 && PrimaryKeyPacket != null && UIDPacket != null)
{
Sig.GenerateCertifyHash(PrimaryKeyPacket, UIDPacket);
}
// Signature of a Binary Document
if (Sig.SignatureType == 0x00)
{
// Are we generating hash for One Pass Signature Packet
if (OPSigPacketStack.Count() > 0)
{
var OnePassSignaturePacket = OPSigPacketStack.Pop();
if (OnePassSignaturePacket.HashAlgorithm == Sig.HashAlgorithm)
{
Sig.GenerateBinaryHash(HashAlgorithmTypes.GetHashAlgoManaged(Sig.HashAlgorithm, HashAlgorithms));
}
}
}
}
}
PacketBlock pb = new PacketBlock(pgp);
pb.AddChildBlock(Tree.StartBlock);
Root.AddChildBlock(pb);
_PacketNodes.Add(pb);
}
}
return(Root.ChildBlock);
}
