Let’s Encrypt is committed to a post-quantum-safe Web PKI. The path we’re planning to take is Merkle Tree Certificates (“MTCs”), a new approach that adds post-quantum authentication to the web without sacrificing the speed and reliability that have made TLS universal.
This post is about these plans and why we believe MTCs are worth pursuing as a key to a post-quantum future.
An increasingly urgent problem For much of the last several years, the conversation about post-quantum cryptography has been a conversation about encryption. The reasoning was straightforward: an attacker who records encrypted traffic today might be able to decrypt it years from now once quantum computers can break the underlying math. Authentication, the part of TLS that indicates a server is who it says it is, has been a less urgent problem. A quantum computer needs to forge a signature in real time, not retroactively, so threats to authentication hinge on the existence of a cryptographically relevant quantum computer (CRQC).
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Ohio suspends tax break for data centers needed to power AI
Ohio is suspending a tax break that has been critical to its competition with other states to attract the massive new facilities that power and train artificial intelligence chatbots. The move by Republican Gov. Mike DeWine comes as the industry is under pressure to pay the full costs of the vast network of its computing warehouses needed to power AI. The size of Ohio’s tax break skyrocketed, dwarfing previous projections, as opposition to data centers is sweeping through cities, suburbs and towns there. It's prompted lawmakers to form a committee to study the impact. DeWine’s office cited the rising utilization of the tax break and the state Legislature’s new research undertaking to declare a “pause.”