Open Source Attributions

Third-Party Software Notices

PRISALYA SecureDrive is made possible by open-source software. We gratefully acknowledge the creators and maintainers of the following open-source projects.

WinFsp (Windows File System Proxy)

Author: Bill Zissimopoulos (billziss-gh)

GPLv3 with FLOSS Exception / LGPLv3

WinFsp provides the kernel-mode file system driver and user-mode API enabling PRISALYA SecureDrive to transparently mount encrypted vaults as real Windows drive letters.

Source Code & Project Repository ↗

WinFsp - Windows File System Proxy Copyright (C) 2015-2026 Bill Zissimopoulos This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 3 as published by the Free Software Foundation, with the addition of the WinFsp FLOSS Exception. You should have received a copy of the GNU General Public License along with this program; if not, see https://www.gnu.org/licenses/gpl-3.0.html.

PySide6 / Qt 6

The Qt Company

LGPLv3

PySide6 provides Python bindings for the Qt application framework used to build PRISALYA SecureDrive's modern graphical user interface and desktop integration.

The Qt Company / PySide Project ↗

Qt is a registered trademark of The Qt Company Ltd. and/or its subsidiaries. PySide6 is licensed under the GNU Lesser General Public License version 3 (LGPLv3). See https://www.gnu.org/licenses/lgpl-3.0.html for terms and source code access.

cryptography (pyca/cryptography)

Python Cryptographic Authority

Apache 2.0 / BSD 3-Clause

Provides cryptographic primitives including AES-256-GCM authenticated envelope encryption, PBKDF2/Argon2 key derivation, and secure random byte generation.

pyca/cryptography Repository ↗

Copyright (c) Individual contributors. Licensed under the Apache License, Version 2.0 or the BSD 3-Clause License. You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0

pywin32 (Python for Windows Extensions)

Mark Hammond & Contributors

PSF License

Provides native access to Windows API functions for inter-process communication (Named Pipes), volume device notifications, and Service Control Manager integration.

pywin32 GitHub Repository ↗