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Practical cryptography and secure secret sharing — no fluff, written by the team building Secretus.

Shamir's Secret Sharing, explained without the math degree

How a 1979 algorithm lets a team hold a secret that no single member can read — and why fewer than k shares reveal mathematically nothing. With practical k-of-n setups for real teams.

·7 min read·cryptography, shamir, teams

Harvest now, decrypt later: the attack that's already happening

Encrypted traffic recorded today can be decrypted once quantum computers mature. What HNDL means for secrets with long lifetimes, what ML-KEM-768 changes, and how hybrid key agreement works.

·6 min read·post-quantum, ML-KEM, threat-model

How to share credentials with clients (without leaking them)

Email and Slack keep credentials forever, in plaintext, on servers you don't control. A practical guide for agencies, freelancers and consultants: one-time links, P2P transfer, and a checklist.

·6 min read·practical, credentials, agencies