Experts say quantum computing could upend data security encryption systems, which rely on factoring large prime numbers—a task easily scalable with the extra power provided by quantum computers.
Government agencies such as the National Security Agency and the National Institute of Standards and Technology in the U.S., as well as Government Communications Headquarters in the U.K., are working to develop post-quantum cybersecurity.
Said Christophe Petit of the University of Birmingham School of Computer Science in the U.K., “The day a big quantum computer is built, all the cryptography we are using today is dead."
From Financial Times
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