nanosignfs 0.1.1
A Linux FUSE filesystem that signs files on write using GPG (PKI), ideal for nano-data pipelines.
Requires Python: >=3.7
Keywords: fuse, gpg, filesystem, cryptography, signing, pki, nano-data, virtual filesystem, python-fuse, linux-filesystem

# nanosignfs

nanosignfs is a Linux-based virtual filesystem built on FUSE (Filesystem in Userspace) that seamlessly integrates cryptographic file signing into everyday write operations. Each time a file is written or modified within the mounted filesystem, it is automatically signed using a pre-configured GPG key, producing a detached .sig signature file. This mechanism ensures end-to-end integrity and non-repudiation, allowing downstream systems or auditors to verify that the content has not been tampered with. The system is particularly suited for nano-data pipelines—such as those found in scientific research, IoT, or regulated environments where even small files require cryptographic assurance. By decoupling signature logic from application logic and embedding it directly into the filesystem layer, nanosignfs simplifies compliance workflows and enhances trust in data provenance without burdening the end user.

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##  Key Features

- Transparent FUSE mount backed by local storage
- Automatic file signing using a GPG key on each write
- Detached `.sig` signature files created per file
- Verifiable audit trail with GPG-based cryptographic integrity
- Lightweight and secure – ideal for nano-data, research pipelines, and compliance workflows

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##  Installation

### Prerequisites

- Before using nanosignfs, make sure your system meets the following requirements:
- Operating System: Linux (with FUSE support)
- Python: 3.7+

### System Packages:

- fuse – FUSE userspace filesystem library
- gpg – GnuPG for digital signing

## Install system dependencies

- sudo yum update
- sudo yum install fuse gpg
- sudo modprobe fuse

## Author
- Raghava Chellu
- raghava.chellu@gmail.com

## Clone the repository

- git clone https://github.com/RaghavaCh440/nanosignfs.git
- cd nanosignfs


## License
MIT License

Copyright (c) 2025 Raghava Chellu

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copies or substantial portions of the Software.                             

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