private byte[] GetTpmAuth(TBS_AUTH_TYPE authType)
{
#if false
return(new byte[0]);
#else
if (TbsHandle == UIntPtr.Zero)
{
throw new Exception("TBS context not created.");
}
//Console.WriteLine("GetTpmAuth: Retrieving auth value {0}", authType);
var resultBuf = new byte[256];
uint resultByteCount = (uint)resultBuf.Length;
TbsWrapper.TBS_RESULT result = TbsWrapper.NativeMethods.
Tbsi_Get_OwnerAuth(TbsHandle,
(uint)authType,
resultBuf,
ref resultByteCount);
if (result != TbsWrapper.TBS_RESULT.SUCCESS)
{
Console.WriteLine("GetTpmAuth({0}): error 0x{1:X} {2}", authType, result,
result == TbsWrapper.TBS_RESULT.OWNERAUTH_NOT_FOUND ? " (OWNERAUTH_NOT_FOUND)" :
result == TbsWrapper.TBS_RESULT.BAD_PARAMETER ? " (BAD_PARAMETER)" : "");
return(new byte[0]);
}
return(Globs.CopyData(resultBuf, 0, (int)resultByteCount));
#endif
}
private byte[] GetTpmAuth(TBS_AUTH_TYPE authType)
{
#if false
return(new byte[0]);
#else
if (TbsHandle == UIntPtr.Zero)
{
throw new Exception("TBS context not created.");
}
//Console.WriteLine("GetTpmAuth: Retrieving auth value {0}", authType);
var resultBuf = new byte[256];
uint resultByteCount = (uint)resultBuf.Length;
TbsWrapper.TBS_RESULT result = TbsWrapper.NativeMethods.
Tbsi_Get_OwnerAuth(TbsHandle,
(uint)authType,
resultBuf,
ref resultByteCount);
if (result != TbsWrapper.TBS_RESULT.SUCCESS)
{
#if !__NETCOREAPP2__ && false
Console.WriteLine($"Trying to read LockoutAuth from the registry...");
try
{
string lockoutAuthBase64 = (string)Registry.GetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\TPM\WMI\Admin", "LockoutHash", null);
if (lockoutAuthBase64 != null)
{
resultBuf = Convert.FromBase64String(lockoutAuthBase64);
Console.WriteLine($"LockoutAuth: {lockoutAuthBase64} | len {resultBuf.Length} bytes | {Globs.HexFromByteArray(resultBuf)}");
return(resultBuf);
}
}
catch (Exception e) {
Console.WriteLine($"Exception: {e}");
}
#endif
#if !WINDOWS_UWP
Console.WriteLine("GetTpmAuth({0}): Windows TBS returned 0x{1:X} {2}", authType, result,
result == TbsWrapper.TBS_RESULT.OWNERAUTH_NOT_FOUND ? " (OWNERAUTH_NOT_FOUND)" :
result == TbsWrapper.TBS_RESULT.BAD_PARAMETER ? " (BAD_PARAMETER)" : "");
#endif
return(new byte[0]);
}
return(Globs.CopyData(resultBuf, 0, (int)resultByteCount));
#endif
}
