"The encryption protecting communications against criminal and nation-state snooping is under threat. As private industry and governments get closer to building useful quantum computers, the algorithms protecting Bitcoin wallets, encrypted Web visits, and other sensitive secrets will be useless. No one doubts the day will come, but as the now-common joke in cryptography circles observes, experts have been forecasting this cryptocalypse will arrive in the next 15 to 30 years for the past 30 years."
"The uncertainty has created something of an existential dilemma: Should network architects spend the billions of dollars required to wean themselves off quantum-vulnerable algorithms now, or should they prioritize their limited security budgets fighting more immediate threats such as ransomware and espionage attacks? Given the expense and no clear deadline, it's little wonder that less than half of all TLS connections made inside the Cloudflare network and only 18 percent of Fortune 500 networks support quantum-resistant TLS connections."
Quantum computers will eventually break many widely used encryption algorithms that protect wallets, web traffic, and other sensitive secrets. Uncertainty around the timeline has created a dilemma about whether to invest billions now to replace quantum-vulnerable algorithms or to prioritize immediate threats such as ransomware and espionage. Adoption of quantum-resistant TLS remains low: less than half of TLS connections within Cloudflare and only 18 percent of Fortune 500 networks support quantum-resistant TLS. Signal Messenger LLC released a detailed 5,900-word write-up and updated the Signal Protocol to be fully quantum-resistant. The engineering effort required significant complexity and sets a high standard for post-quantum readiness.
Read at Ars Technica
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