Security News > 2021 > June > The paradox of post-quantum crypto preparedness

Preparing for post-quantum cryptography is a paradox: on the one hand, we don't know for sure when, or perhaps even if, a large quantum computer will become available that can break all current public-key cryptography.

The NIST report, Getting Ready For Post Quantum Cryptography, covers the development of an inventory and a migration playbook.

The value of NIST's 15-point list is that it can guide the cryptography inventory work.

The good news about this kind of rich cryptography inventory is that it has immediate business benefits, long before the arrival of a large quantum computer, as part of good cryptography management practice.

The ENISA report Post Quantum Cryptography: Current State and Quantum Mitigation gives a roadmap for this situation.

There are essentially two options if you need to mitigate quantum risk now: use a hybrid post-quantum and pre-quantum scheme, or use pre-shared keys.

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