Let’s Encrypt works toward post-quantum certificates at web scale

Let’s Encrypt announced plans to implement post-quantum-safe web authentication using Merkle Tree Certificates (MTCs), aiming to protect TLS connections against future quantum computing threats. The organization targets a staging environment for MTCs by late 2026, with full production deployment expected in 2027. This initiative addresses the need for post-quantum cryptography to extend beyond encryption into authentication at web scale.

Let’s Encrypt plans to pursue a post-quantum-safe Web PKI through 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. The project is targeting late 2026 for a staging environment that issues MTCs, with a production-ready environment planned for 2027. “For much of the last several years, the conversation about post-quantum cryptography has been a conversation about encryption. The reasoning … More https://www.helpnetsecurity.com/2026/06/05/lets-encrypt-mcts-web-post-quantum-authentication/ The post Let’s Encrypt works toward post-quantum certificates at web scale https://www.helpnetsecurity.com/2026/06/05/lets-encrypt-mcts-web-post-quantum-authentication/ appeared first on Help Net Security https://www.helpnetsecurity.com .