Quantum Cryptanalysis: Hype and Reality

This article has been indexed from Lawfare

Drawn from Law and Policy for the Quantum Age (Cambridge University Press, 2022), by Chris Jay Hoofnagle and Simson L. Garfinkel. 

In 1994, Peter Shor fired the starting gun of the quantum computing race. Shor found that a quantum computer—in those days, a device only imagined by physicists and theoretical computer scientists—could solve a math problem that in turn would make it possible to efficiently factor large numbers. Because much of modern encryption depends on the assumption that such factoring is too time-consuming for even all the world’s computers working together to crack a single key, Shor’s insight led to massive public and private investment in quantum computing. Inadvertently, it also caused many observers to view quantum computing mainly as a threat to encryption.

Today, nation-state

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