public static bool DecryptFile(string path, EncryptionArgv encArgv)
{
try
{
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
byte[] rawData = new byte[fs.Length];
fs.Read(rawData, 0, (int)fs.Length);
fs.Close();
fs.Dispose();
Headers header = new Headers();
byte[] decryptedData = null;
byte[] MD5Hash = null;
bool ffcFile = false;
string fileName = Path.GetFileNameWithoutExtension(path);
string directoryName = Path.GetDirectoryName(path);
if (encArgv.OutPath != "")
{
directoryName = encArgv.OutPath;
}
// Check header
if (header.CheckFFCFile(ref rawData))
{
if (!(header.MatchPassword(encArgv.PrivatePassword, rawData)))
{
Console.WriteLine("\r\n - Failed: Password do not match");
return(false);
}
if (!(header.MakeEncArgv(ref rawData, ref encArgv)))
{
Console.WriteLine("\r\n - Failed: converting headers");
return(false);
}
ffcFile = true;
if (encArgv.NeedRestoreFilePath)
{
try
{
Directory.CreateDirectory(encArgv.EncFileInfo.FileDirectory);
}
catch { }
if (Directory.Exists(encArgv.EncFileInfo.FileDirectory))
{
directoryName = encArgv.EncFileInfo.FileDirectory;
}
else
{
Console.Write("\r\n - Warning: Could not create directory: '" + encArgv.EncFileInfo.FileDirectory + "' - ");
}
}
if (encArgv.NeedRestoreInfo)
{
fileName = encArgv.EncFileInfo.FileName;
}
else
{
fileName = fileName + encArgv.EncFileInfo.FileExtension;
}
decryptedData = DecryptData(ref encArgv.EncFileInfo.FileData, encArgv.PrivatePassword, encArgv.AesInfo);
rawData = null;
header = null;
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
MD5Hash = md5.ComputeHash(decryptedData);
md5.Dispose();
md5 = null;
if (!((IStructuralEquatable)MD5Hash).Equals(encArgv.EncFileInfo.MD5FileHash, StructuralComparisons.StructuralEqualityComparer))
{
Console.WriteLine("\r\n - Failed: Data do not match");
return(false);
}
}
else
{
ffcFile = false;
header = null;
decryptedData = DecryptData(ref rawData, encArgv.PrivatePassword, encArgv.AesInfo);
rawData = null;
}
string createPath = directoryName + "\\" + fileName;
// Write decrypted data
if (encArgv.ForceWrite & File.Exists(createPath))
{
Console.Write("\r\n - Warning: File Exists. Forced writing data... - ");
FileInfo file = new FileInfo(createPath);
if ((file.Attributes & FileAttributes.ReadOnly) == FileAttributes.ReadOnly)
{
file.Attributes = FileAttributes.Normal;
}
}
// Check file exists
else if (File.Exists(createPath))
{
createPath = IOObject.RenameFile(createPath);
Console.Write("\r\n - Warning: File Exists. Renamed file: " + Path.GetFileName(createPath) + " - ");
}
using (FileStream fsb = new FileStream(createPath, FileMode.Create, FileAccess.Write))
{
fsb.Write(decryptedData, 0, decryptedData.Length);
}
decryptedData = null;
// Compressed Zip
if (encArgv.EncFileInfo.IsCompressedZipFile)
{
string folderPath = "";
using (Ionic.Zip.ZipFile zip = new Ionic.Zip.ZipFile(createPath, Encoding.UTF8))
{
folderPath = Path.GetDirectoryName(createPath) + "\\" + zip.Comment;
Directory.CreateDirectory(folderPath);
if (encArgv.ForceWrite)
{
zip.ExtractAll(folderPath, Ionic.Zip.ExtractExistingFileAction.OverwriteSilently);
}
else
{
try
{
zip.ExtractAll(folderPath, Ionic.Zip.ExtractExistingFileAction.Throw);
}
catch
{
folderPath = IOObject.RenameFolder(folderPath);
zip.ExtractAll(folderPath, Ionic.Zip.ExtractExistingFileAction.OverwriteSilently);
}
}
}
File.Delete(createPath);
}
// Add file attributes
if (ffcFile & encArgv.IsOriginalFile & encArgv.NeedRestoreInfo & !encArgv.EncFileInfo.IsCompressedZipFile)
{
FileInfo fi = new FileInfo(createPath);
fi.CreationTime = encArgv.EncFileInfo.CreationTime;
fi.LastWriteTime = encArgv.EncFileInfo.LastWriteTime;
fi.LastAccessTime = encArgv.EncFileInfo.LastAccessTime;
if (encArgv.EncFileInfo.FileNotContentIndexed)
{
fi.Attributes |= FileAttributes.NotContentIndexed;
}
if (encArgv.EncFileInfo.FileOffline)
{
fi.Attributes |= FileAttributes.Offline;
}
if (encArgv.EncFileInfo.FileArchive)
{
fi.Attributes |= FileAttributes.Archive;
}
if (encArgv.EncFileInfo.FileHidden)
{
fi.Attributes |= FileAttributes.Hidden;
}
if (encArgv.EncFileInfo.FileSystem)
{
fi.Attributes |= FileAttributes.System;
}
if (encArgv.EncFileInfo.FileReadOnly)
{
fi.Attributes |= FileAttributes.ReadOnly;
}
fi = null;
}
// Delete file
if (encArgv.NeedDeleteFile)
{
IOObject.DeleteFileEx(path, encArgv.NeedFillDeleteFile);
}
return(true);
}
catch (Exception ex)
{
Console.WriteLine("\r\n - Failed: " + ex.Message);
return(false);
}
}