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

> Source: <https://www.helpnetsecurity.com/2026/06/05/lets-encrypt-mcts-web-post-quantum-authentication/>
> Published: 2026-06-05 10:45:17+00:00

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).