GoKawiilLatacora updates 'Cryptographic Right Answers' guide for post-quantum shift
Latacora has published a revised version of its long-running 'Cryptographic Right Answers' developer guide, updating recommendations in light of an accelerated post-quantum cryptography transition timeline that now targets completion by 2029. The guide states symmetric cryptography remains largely unaffected by quantum threats, but nearly all asymmetric recommendations have changed since the 2018 and 2024 editions. It also now recommends getting cryptographic code reviewed by capable LLMs alongside using memory-safe languages.
GoKawiil's interpretation of the reporting above, not reported fact.
The compressed 2029 deadline, described in the piece as a dramatic shift from earlier expectations, pressures organizations to re-evaluate cryptographic implementations well ahead of previously assumed timelines. Recommending LLM review as a standard practice suggests the author views AI tools as now reliable enough to catch cryptographic bugs, a notable shift in how security guidance treats automated code review. The specific algorithm swaps imply that developers following older 'right answers' guides could be using outdated or soon-to-be-vulnerable asymmetric cryptography.
- The guide reports a new industry consensus that post-quantum cryptography migration must be completed by 2029.
- Symmetric cryptography recommendations remain stable, but asymmetric cryptography guidance has changed substantially since 2024.
- Latacora's updated guide newly recommends LLM-assisted code review as a standard cryptographic security practice.
Source: words.filippo.io, 2026-10-12
Published there as: “(Post-Quantum) Cryptographic Right Answers”
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