RCSChain – Quantum Secure Blockchain File Storage

What is RCSChain?

Secure Data Storage for a Post Quantum World

RCSChain is an open-source project that combines the immutability of private-ledger blockchain technology with the resilience of post-quantum encryption to create a distributed file storage system unlike any other. Hosted on GitHub at github.com/NetworkNerd1337/rcschain, it’s a Flask-based application that runs on a network of nodes, leveraging a Kademlia Distributed Hash Table (DHT) for dynamic peer discovery and AES-GCM encryption for privacy.

Real-World Uses

RCSChain is the perfect solution for those who need to securely store sensitive documents, share data, or protect personal backups.

Why RCSChain Matters

RCSChain offers a path forward away from data breaches and looming quantum computing threats, By combining post-quantum encryption with blockchain technology, RCSChain proves that security can also be user-friendly and innovative.

One of the standout advantages of RCSChain is its use of a blockchain ledger as the core data storage system, a design choice that fundamentally enhances security and integrity. Unlike traditional file systems where data resides in mutable, centralized repositories, RCSChain records every file operation—uploads, deletions, moves, and more—as an immutable block in a distributed ledger.

Each block is cryptographically signed with Falcon-512, a post-quantum signature scheme, and linked to its predecessor via a hash, creating a chain that’s virtually impossible to alter without detection. This tamper-proof nature ensures that once data is written, it cannot be secretly modified or deleted without breaking the chain’s integrity, providing an unparalleled level of trust and auditability. For users, this means their files are not just stored—they’re etched into a secure, verifiable history that resists unauthorized changes.

This blockchain-based approach also makes RCSChain exceptionally resilient against attacks like ransomware and malware, which typically rely on encrypting or corrupting data in place. Because the ledger is distributed across multiple nodes and every operation is replicated and validated, an attacker would need to compromise a majority of the network simultaneously to alter the stored data—a feat made incredibly difficult by the encrypted DHT and Falcon-512 authentication.

Ransomware, for instance, can’t simply encrypt files and demand payment, as the original data remains intact in the immutable ledger, recoverable by unaffected nodes. Malware aiming to delete or manipulate files faces a similar hurdle: any tampering attempt would be rejected by the network unless it conforms to the cryptographic consensus, rendering such attacks futile. By leveraging the blockchain’s decentralized, tamper-proof structure, RCSChain transforms file storage into a fortress, safeguarding data against both current and future threats with a level of robustness that traditional systems can’t match.

Key Features That Set RCSChain Apart

RCSChain offers innovative solutions to modern security needs with its post-quantum encryption and dynamic peer discovery.

Post-Quantum Encryption with Falcon-512

Falcon-512 is a lattice-based post-quantum cryptographic algorithm that provides increased protection against future quantum attacks. The Falcon-512 signatures are used in the ledger as well as for peer discovery with multiple nodes.

Dynamic Peer Discovery via Encrypted DHT

RCSChain uses a Kademlia DHT to dynamically and securely connect nodes using Falcon-512 signatures, ensuring scalability and resilience for your network.

Lightweight User Management via Flask UI

Enjoy the convenience and ease of managing your account and other users through RCSChain’s intuitive Flask-based web interface, making the UI lightweight, comprehensive and easy to expand and further develop.

The Team

RCSChain is driven by its founder, Ryan Huff, known online as @NetworkNerd1337. A passionate innovator with a knack for blending cutting-edge technology and practical solutions.

As the project grows, Ryan welcomes collaborators to join the mission of redefining quantum-secure, decentralized storage—check out the GitHub repo to get involved!

Ryan Huff – Founder

@NetworkNerd1337

Get Involved: Calling All Contributors!

RCSChain is more than a project—it’s a community-driven effort, and we’re eager to welcome contributors who share our passion for security and innovation.