public void SetFileInfo(EncryptionFileInfo fileInfo)
{
EncFileInfo = fileInfo;
}
public bool MakeEncArgv(ref byte[] rawData, ref EncryptionArgv encArgv)
{
// Get Header size and Data size
EncryptionFileInfo efi = new EncryptionFileInfo();
byte[] headerSizeBytes = new byte[4];
byte[] dataSizeBytes = new byte[8];
Buffer.BlockCopy(rawData, 4, headerSizeBytes, 0, 4);
Buffer.BlockCopy(rawData, 8, dataSizeBytes, 0, 8);
int headerSize = BitConverter.ToInt32(headerSizeBytes, 0);
long dataSizeL = BitConverter.ToInt64(dataSizeBytes, 0);
if (int.MaxValue < dataSizeL)
{
return(false);
}
int dataSize = (int)dataSizeL;
byte[] headerRawBytes = new byte[headerSize];
efi.FileData = new byte[dataSize];
Buffer.BlockCopy(rawData, 80, headerRawBytes, 0, headerRawBytes.Length);
Buffer.BlockCopy(rawData, 80 + headerRawBytes.Length, efi.FileData, 0, efi.FileData.Length);
// Decrypt header data
byte[] headerBytes = Chipher.Aes.DecryptData(ref headerRawBytes, encArgv.PrivatePassword, MakeDefaultAes());
headerRawBytes = null;
// Read binary header data
efi.IsAesMode = BitConverter.ToBoolean(headerBytes, 0);
if (efi.IsAesMode)
{
encArgv.AesInfo.Mode = (CipherMode)(int)headerBytes[1];
encArgv.AesInfo.BlockSize = (int)headerBytes[2] + 1;
encArgv.AesInfo.KeySize = (int)headerBytes[3] + 1;
encArgv.AesInfo.Padding = (PaddingMode)(int)headerBytes[4];
}
efi.IsCompressedZipFile = BitConverter.ToBoolean(headerBytes, 5);
efi.FileNotContentIndexed = BitConverter.ToBoolean(headerBytes, 10);
efi.FileOffline = BitConverter.ToBoolean(headerBytes, 11);
efi.FileReadOnly = BitConverter.ToBoolean(headerBytes, 12);
efi.FileHidden = BitConverter.ToBoolean(headerBytes, 13);
efi.FileArchive = BitConverter.ToBoolean(headerBytes, 14);
efi.FileSystem = BitConverter.ToBoolean(headerBytes, 15);
Buffer.BlockCopy(headerBytes, 16, efi.MD5FileHash, 0, efi.MD5FileHash.Length);
// Read string header data
byte[] strHeaderRaw = new byte[headerBytes.Length - 32];
Buffer.BlockCopy(headerBytes, 32, strHeaderRaw, 0, strHeaderRaw.Length);
string[] strHeader = Encoding.UTF8.GetString(strHeaderRaw).Split('|');
efi.FilePath = strHeader[0];
efi.FileName = Path.GetFileName(strHeader[0]);
efi.FileExtension = Path.GetExtension(strHeader[0]);
efi.FileNameWithoutExtension = Path.GetFileNameWithoutExtension(strHeader[0]);
efi.FileDirectory = Path.GetDirectoryName(strHeader[0]);
efi.CreationTime = DateTime.Parse(strHeader[1]);
efi.LastWriteTime = DateTime.Parse(strHeader[2]);
efi.LastAccessTime = DateTime.Parse(strHeader[3]);
encArgv.SetFileInfo(efi);
return(true);
}
