Abyrène — Educational app

Clavyx

Learn to encrypt. Build puzzles.
21 methods explained from the first sentence to university level, and the workshop to compose the codes of your ARGs, treasure hunts and escape rooms — entirely offline.

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A cryptography school that fits in your pocket, and a workshop for puzzle makers. 21 methods, from Caesar to AES-256, each explained on five levels. No account, no server — everything stays on your device.

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The school

Understand, not just encrypt

From the Caesar cipher to modern AES-256, ChaCha20-Poly1305, RSA and elliptic curves, through Vigenère, Playfair, the 1918 ADFGVX or Bruce Schneier's Solitaire: 21 methods, each explained on five levels. One sentence to grasp the idea, the steps to follow, its history, its technology, then the advanced explanation — S-boxes and Galois fields, Kasiski examination, index of coincidence. You stop at whichever level interests you.

For creators

The puzzle workshop

Building an ARG, a treasure hunt, an escape room or a tabletop scenario? Clavyx composes your coded messages and checks that they decrypt. Historical ciphers give the period feel, presets remember which method and which key go with which puzzle, and your players decrypt with the same app — no account, no connection.

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21 methods

From Caesar to AES-256, ChaCha20 and RSA. Historical ciphers for your puzzles, modern standards when the protection has to be real.

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100% offline

No connection, no account, no server. Neither your texts nor your keys leave your device: nothing is sent to Abyrène or anyone else.

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Explained at your pace

Five levels per method: one sentence, the steps, the history, the technology, then the advanced explanation. Stop wherever you like.

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