About us

The CipherChronicle project

CipherChronicle is a playful, educational platform for decoding cipher grids. It's built for the curious, for puzzle lovers, and for anyone who wants to understand how — long before computers — people kept messages hidden from prying eyes.

Each historical cipher method — from Caesar to Enigma, through Vigenère, Atbash, Polybius, Playfair, Hill, and even the Templar cipher — is explained, illustrated with an animated 5×5 grid demonstration, then made playable as a puzzle. The goal: learn cryptography by playing, not only by reading.

The site runs entirely client-side: no game server, no hidden logic. Even the solution check happens in your browser via a SHA-256 fingerprint — which means we do not know the answers to the grids you're solving, and we couldn't retrieve them even if we wanted to.

The publisher: Challenge My Project

CipherChronicle is designed, developed and operated by Challenge My Project, a Breton technical studio based in Rennes, France. Founded in 2020 by David Patiashvili, the company helps organizations turn their ideas into tailor-made digital solutions: web applications, performant websites, business platforms.

Our approach rests on three pillars:

• Collaboration — we adopt every project as if it were our own, evolve it, enrich it with a strategic perspective.
• Technical expertise — propose the tools and architectures best suited to the problem, without dogma and without chasing trends.
• Long-term vision — favor durable, maintainable solutions that age well over shortcuts you pay for later.

Our corporate site challengemyproject.bzh details our areas of expertise and our references.

Why CipherChronicle?

Classical cryptography is a gorgeous intellectual playground: every method carries a story (Julius Caesar, Mary Queen of Scots, Vietnam POWs, Alan Turing and Bletchley Park), a mechanism you can follow by hand, and a pedagogical paradox — what seemed unbreakable in the 16th century falls today in a few lines of code.

We wanted to materialize that richness into an accessible, fast, data-respectful, pleasant-to-use platform. The choice of a static architecture (Astro) over a server application, the strict split between hosting (AWS) and user data (Firebase), proof by hash rather than in clear — all these technical choices reflect the same conviction: well-executed simplicity is sturdier than poorly understood complexity.

Get in touch

A grid idea, a cipher method we should add, a historical correction, a technical question? We love talking. The simplest way is to email [email protected] — the Contact us page spells out what kind of feedback we're after. Our company site challengemyproject.bzh and the postal address in our legal notice remain open for formal requests.