Security/ cryptography · post-quantum · security

A Trusted Crypto Reference Guide Gets a Post-Quantum Refresh

A widely used developer guide to safe crypto choices now recommends which quantum-resistant algorithms to actually use.

A well-known reference for picking safe cryptographic algorithms just added a post-quantum section.

The guide, published at words.filippo.io under the title '(Post-Quantum) Cryptographic Right Answers,' is the latest version of a security community staple: a list that tells developers which algorithms to use for hashing, encryption, signatures, and key exchange instead of leaving that choice to guesswork. This edition folds in post-quantum options, the newer algorithms designed to stay secure even against an attacker with a working quantum computer. It went up on October 12, 2026, and drew 38 points and a single comment within hours.

Most developers are not cryptographers and should not be picking their own primitives; a vetted list saves them from shipping something fragile. Adding post-quantum guidance now, years before quantum computers can realistically break current encryption, matters because migrating crypto across a codebase or protocol takes years, not weeks.

This genre of guide (a terse, opinionated cheat sheet for the algorithms non-experts should default to) has circulated in security circles for years. Bolting on post-quantum picks is just the latest layer on an old problem: most developers have no business choosing their own crypto.

TR

The Revision

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