public static ContainerV1 FromBytes(byte[] bytes)
{
var magicBytes = bytes.Skip(0).Take(MagicBytesLength).ToArray();
if (!Config.MagicBytes.SequenceEqual(magicBytes))
throw new Exception("MagicNumber is wrong.");
var version = BitConverter.ToInt32(bytes.Skip(MagicBytesLength).Take(VersionLength).ToArray(), 0);
if (version != ContainerVersion)
throw new Exception("ContainerVersion is wrong.");
var hmac = bytes.Skip(MagicBytesLength + VersionLength).Take(HmacLength).ToArray();
var iv = bytes.Skip(MagicBytesLength + VersionLength + HmacLength).Take(IVLength).ToArray();
var data = bytes.Skip(MagicBytesLength + VersionLength + HmacLength + IVLength).ToArray();
var result = new ContainerV1(iv, data, hmac);
return result;
}
public static string Encrypt(string path, string password, bool replaceFilename = false,
Action<double, string> statusCallback = null)
{
if (!File.Exists(path))
throw new FileNotFoundException();
SetStatusEncryption(statusCallback, Status.ReadFile);
var bytes = File.ReadAllBytes(path);
var iv = CryptoProvider.CreateIV();
var plainContent = new PlainContent
{
Data = bytes,
Filename = Path.GetFileName(path)
};
SetStatusEncryption(statusCallback, Status.EncryptData);
var encryptedBytes = CryptoProvider.EncryptData(plainContent.GetBytes(), iv, password);
SetStatusEncryption(statusCallback, Status.CreateHmac);
var hmac = CryptoProvider.CreateHmac(iv, encryptedBytes, password);
var newPath = CreateEnryptedFilename(path, replaceFilename);
var container = new ContainerV1(iv, encryptedBytes, hmac);
SetStatusEncryption(statusCallback, Status.WriteAllBytes);
File.WriteAllBytes(newPath, container.GetBytes());
SetStatusEncryption(statusCallback, Status.Done);
return newPath;
}