“People ask me to predict the future, when all I want to do is prevent it. Better yet, build it. Predicting the future is much too easy, anyway. You look at the people around you, the street you stand on, the visible air you breathe, and predict more of the same. To hell with more. I want better.”
— Ray Bradbury, from Beyond 1984: The People Machines

The story and the path are clear: quantum computers are coming that will have the ability to break the cryptographic mechanisms we rely on to secure modern communications, but there is hope! The cryptographic community has designed new mechanisms to safeguard against this disruption. There are challenges: will the new safeguards be practical? How will the fast-evolving Internet migrate to this new reality? In other blog posts in this series, we have outlined some potential solutions to these questions: there are new algorithms for maintaining confidentiality and authentication (in a “post-quantum” manner) in the protocols we use. But will they be fast enough to deploy at scale? Will they provide the required properties and work in all protocols? Are they easy to use?

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