private static void CallEncryption(bool encryption, string filePath, byte[] passwordBytes, ref int progress, BackgroundWorker backgroundWorker)
{
try
{
bool kryptorExtension = filePath.EndsWith(Constants.EncryptedExtension, StringComparison.Ordinal);
// Prevent Read-Only file attribute causing errors
File.SetAttributes(filePath, FileAttributes.Normal);
if (encryption == true && kryptorExtension == false)
{
Encryption.InitializeEncryption(filePath, passwordBytes, backgroundWorker);
OverwriteDisabled(filePath);
}
else if (encryption == false && kryptorExtension == true)
{
Decryption.InitializeDecryption(filePath, passwordBytes, backgroundWorker);
}
else
{
DisplayFileError(filePath, encryption, kryptorExtension);
}
ReportProgress.IncrementProgress(ref progress, backgroundWorker);
}
catch (Exception ex) when(ExceptionFilters.FileAccessExceptions(ex))
{
Logging.LogException(ex.ToString(), Logging.Severity.High);
DisplayMessage.ErrorResultsText(filePath, ex.GetType().Name, "Unable to set file attributes to normal.");
}
}
private static void CallShredFilesMethod(string filePath, ref int progress, BackgroundWorker bgwShredFiles)
{
try
{
File.SetAttributes(filePath, FileAttributes.Normal);
switch (Globals.ShredFilesMethod)
{
case 0:
ShredFilesMethods.FirstLast16KiB(filePath);
break;
case 1:
// false = use zeros, not ones (used in Infosec Standard 5 Enhanced)
ShredFilesMethods.ZeroFill(filePath, false, bgwShredFiles);
break;
case 2:
ShredFilesMethods.PseudorandomData(filePath, bgwShredFiles);
break;
case 3:
ShredFilesMethods.EncryptionErasure(filePath, bgwShredFiles);
break;
case 4:
ShredFilesMethods.InfosecStandard5Enhanced(filePath, bgwShredFiles);
break;
case 5:
ShredFilesMethods.PseudorandomData5Passes(filePath, bgwShredFiles);
break;
}
DeleteFile(filePath);
ReportProgress.IncrementProgress(ref progress, bgwShredFiles);
}
catch (Exception ex) when(ExceptionFilters.FileAccessExceptions(ex))
{
Logging.LogException(ex.ToString(), Logging.Severity.High);
DisplayMessage.ErrorResultsText(filePath, ex.GetType().Name, "Unable to set file attributes to normal. This file has not been shredded.");
}
}