Show HN: Encyfr – post-quantum encryption for all (apps.apple.com)

1 points by theyoungsir 1y ago ↗ HN

I wanted proper post-quantum crypto tools on my phone, so I built encyfr. There’s no telemetry, no accounts, and everything runs locally.

It supports key generation/management, file encryption, and signing with the NIST pqc choices (Kyber, Dilithium, AES256) as well as password modes. Normally I haven't bothered circulating my work, but several recent concerns about phone compromise can be resolved with proper encryption utilities like these (e.g. any agency with a GrayKey).

I’m curious if others here find this kind of thing useful/interesting, and what features would make it genuinely useful to you. Not available in France.

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2dabz 1y ago ↗

I made desktop apps for lots of encryption algorithms including AES-256-GCM, chacha20, kyber, sha256 and sha512, hmacs, rsa...on my encryptionalgorithms Substack. I also just finished a private messaging/file exchange server/client that runs on Websocket. Uses TSL/SSL, kyber1024 for handshake, AES-256-GCM for symmetric encryption, and elliptic curve non-interactive zero knowledge proof for password storage and login verification. Sends in chunks and streams to hard disk so never spikes RAM for memory optimization. Tkinter graphical user interface on client side. Kyber private keys are encrypted and only decrypted into memory during use. Public key is hard coded.