static int DecryptFileOptions(DecryptFileOptions opts)
{
if (FilesExist(new List <string> {
opts.EncryptedPacketPath, opts.RecipientKeyPath, opts.SenderKeyPath
}))
{
var encryptedPacketText = File.ReadAllText(opts.EncryptedPacketPath);
var encryptedPacket = JsonConvert.DeserializeObject <EncryptedPacket>(encryptedPacketText);
var decryptedData = new DecryptedData();
try
{
decryptedData = Decrypt(encryptedPacket, opts.KeyBitLength, opts.SenderKeyPath, opts.RecipientKeyPath);
}
catch (Exception ex)
{
WriteMessageToConsole($"Error while decrypting data: {ex.Message}", ConsoleColor.Red);
return(1);
}
try
{
var outputPath = opts.OutputPath == null ? ".\\" : opts.OutputPath;
File.WriteAllBytes($"{outputPath}\\{decryptedData.Filename}", decryptedData.FileContents);
}
catch (Exception ex)
{
WriteMessageToConsole(ex.Message, ConsoleColor.Red);
return(1);
}
if (decryptedData.Version1Packet)
{
WriteMessageToConsole("WARNING: Specified Encrypted Packet did not contain a filename for the original file - temporary filename used instead but extension may be incorrect!!", ConsoleColor.Red);
}
WriteMessageToConsole($"File successfully decrypted to {decryptedData.Filename}", ConsoleColor.Green);
return(0);
}
else
{
WriteMessageToConsole("One or more of the specified files were not found - see above", ConsoleColor.Red);
return(1);
}
}
private static int DecryptFile(DecryptFileOptions opts)
{
string pkcs11LibPath = opts.LibPath ?? FindEidLibrary();
IBokPinProvider pinProvider = CreatePinpProvider(opts.UseConsolePin);
using EidRsaCryptoAccessor eidRsaCryptoAccessor = new EidRsaCryptoAccessor(pkcs11LibPath, pinProvider);
using FileStream inputFiletream = new FileStream(opts.EncryptedFile, FileMode.Open, FileAccess.Read);
using ContainerReader reader = new ContainerReader(inputFiletream, eidRsaCryptoAccessor);
string fileName = reader.ReadFileName().GetAwaiter().GetResult();
string outputFilePath = Path.Combine(Path.GetDirectoryName(opts.EncryptedFile), fileName);
using FileStream outputFiletream = new FileStream(outputFilePath, FileMode.Create, FileAccess.ReadWrite);
using Stream contentSrream = reader.GetContentStream().GetAwaiter().GetResult();
contentSrream.CopyTo(outputFiletream);
return(0);
}
