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Re:Show HN: Nix – open-source, zero-knowledge secret sharing by burnbox on Thursday January 15, 2026 @08:15PM (#46641828)
We built Burnbox (burnbox.au) with similar goals. To answer your questions for comparison:

1. Argon2id, 64MB memory, 3 iterations. Memory-hard beats iteration count.

2. Encrypted blob + padded filename (256 bytes fixed) + expiry timestamp. No IP logging—downloads proxy through Netlify so Supabase never sees user IPs.

3. Threat model documented at /security. Trust assumption is TLS + uncompromised JS delivery. Source hashes published for verification without self-hosting.

We've had interest from lawyers and incident response teams. Use cases at /use-cases.

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