internal static bool TryParse(byte[] data,
NtlmNegotiateFlags flags, string domain, string username,
string workstation, byte[] lm_response, byte[] nt_response,
byte[] session_key, byte[] mic, int mic_offset, Version version,
out NtlmAuthenticationToken token)
{
token = null;
if (nt_response?.Length < 44)
{
return(false);
}
try
{
BinaryReader reader = new BinaryReader(new MemoryStream(nt_response));
byte[] nt_proof = reader.ReadBytes(16);
byte challenge_ver = reader.ReadByte();
byte max_challenge_ver = reader.ReadByte();
ushort reserved_1 = reader.ReadUInt16();
uint reserved_2 = reader.ReadUInt32();
long timestamp = reader.ReadInt64();
byte[] client_challenge = reader.ReadBytes(8);
uint reserved_3 = reader.ReadUInt32();
if (!NtlmUtils.TryParseAvPairs(reader, out List <NtlmAvPair> av_pairs))
{
return(false);
}
token = new NtlmAuthenticateAuthenticationTokenV2(data, flags, domain, username, workstation, lm_response, nt_response,
session_key, mic, mic_offset, version, nt_proof, challenge_ver, max_challenge_ver, reserved_1, reserved_2,
timestamp, client_challenge, reserved_3, av_pairs);
return(true);
}
catch (EndOfStreamException)
{
return(false);
}
}
private static bool TryParseAvPairs(byte[] data, out List <NtlmAvPair> av_pairs)
{
return(NtlmUtils.TryParseAvPairs(new BinaryReader(new MemoryStream(data)), out av_pairs));
}
