private bool UpdateTablesEncryption(string dirPath)
{
DirectoryInfo di = new DirectoryInfo(dirPath);
if (cbxCreateBackup.Checked)
{
int iBackupCount = 1;
string destDirTmp;
do
{
destDirTmp = $"{di.FullName}_bak{iBackupCount++}";
if (!Directory.Exists(destDirTmp))
{
Directory.CreateDirectory(destDirTmp);
di.CopyFilesRecursively(new DirectoryInfo(destDirTmp));
break;
}
} while (Directory.Exists(destDirTmp));
}
// Slander.tbl gets encrypted separately from the rest of the tbls, so let's keep it as is, as we don't need to update it.
var files = di.GetFiles("*.tbl", SearchOption.TopDirectoryOnly)
.Where(f => !f.Name.StartsWith("Slander", StringComparison.OrdinalIgnoreCase));
foreach (var fi in files)
{
byte[] data = File.ReadAllBytes(fi.FullName);
if (IsTableDecrypted(data))
{
Log.Info($"Table {fi.Name} is not encrypted. Updating to new encryption.");
}
else
{
FileSecurity.DecryptXOR(data, _previousKeys[0], _previousKeys[1], _previousKeys[2]);
if (!IsTableDecrypted(data)) // verify that we managed to decrypt it.
{
Log.Error($"Failed to decrypt {fi.Name}.");
return(false);
}
}
FileSecurity.EncryptXOR(data, tbxKey1.Key, tbxKey2.Key, tbxKey3.Key);
File.WriteAllBytes(fi.FullName, data);
}
return(true);
}
