The US National Security Agency (NSA) has produced a rather interesting PDF FAQ on post-quantum cryptography, which can be found at
https://media.defense.gov/2021/Aug/04/2002821837/-1/-1/1/Quantum_FAQs_20210804.PDFI'm sorry for not catching this and sharing it more promptly. There is also some press coverage here:
NSA: We 'don't know when or even if' a quantum computer will ever be able to break today's public-key encryption
Then again, it would say that
Clifford Lynch Director, CNI
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