Free software1 sections · 2 min readBy Dezső Mező.mdFree softwareVeylum
Veylum is an end-to-end encrypted notes app where your text never leaves the device in readable form. It uses the Web Crypto API: a passphrase is stretched with PBKDF2 into a non-extractable AES-256-GCM key, and storage only ever holds ciphertext. It is a from-scratch, dependency-light build where "a wrong passphrase can't decrypt" is a tested invariant, and you can download and run it locally.
01About the app
Applied cryptography done right
What to take away
- Web Crypto E2E: passphrase → PBKDF2 → non-extractable AES-256-GCM; storage holds only ciphertext, and 'a wrong passphrase can't decrypt' is a tested invariant.
- Download: Veylum (ZIP)
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