private string ReadMachineKey()
{
try
{
using (var guid = RegistryKey.OpenBaseKey(RegistryHive.LocalMachine, RegistryView.Default).OpenSubKey(@"SOFTWARE\Microsoft\Cryptography"))
{
var machineGuid = Guid.ParseExact(guid.GetValue("MachineGuid").ToString(), "d");
return(_hash.CalculateHash(machineGuid.ToByteArray()));
}
}
catch (Exception e)
{
_logger.Debug(e, "Couldn't read Machine GUID.");
return(new string('=', 10));
}
}
public void ValidateHash(string path, string sha256)
{
_logger.Trace("Starting checksum verification");
var hash = _calculateHash.CalculateHash(path);
if (!string.Equals(hash, sha256, StringComparison.OrdinalIgnoreCase))
{
_logger.Warn($"Checksum verification failed for {path}. File: {hash} Manifest:{sha256}");
throw new ChecksumVerificationException(
$"SHA256 Checksum verification failed for {path}.");
}
_logger.Info("Checksum verification PASSED");
}