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Google Advances Quantum-Resistant HTTPS Certificates with Merkle Tree Certificates

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Google is developing Merkle Tree Certificates (MTCs) to enhance the security of Chrome's HTTPS certificates against quantum computing threats. MTCs use compact Merkle Tree proofs to reduce bandwidth usage and improve performance while maintaining strong security. Google plans to integrate MTCs into Chrome's Root Store by 2027, ensuring a transition to quantum-resistant certificates without disrupting existing TLS connections.

Timeline

  1. 02.03.2026 13:33 1 articles · 3h ago

    Google Plans to Integrate Merkle Tree Certificates into Chrome by 2027

    Google is developing Merkle Tree Certificates (MTCs) to enhance the security of Chrome's HTTPS certificates against quantum computing threats. MTCs use compact Merkle Tree proofs to reduce bandwidth usage and improve performance while maintaining strong security. Google plans to integrate MTCs into Chrome's Root Store by 2027, ensuring a smooth transition to quantum-resistant certificates without disrupting existing TLS connections. CT Log operators with usable logs in Chrome before February 1, 2026, will be invited to participate in bootstrapping public MTCs in Q1 2027. By Q3 2027, Google expects to finalize requirements for onboarding CAs into a new Chrome Quantum-resistant Root Store (CQRS). Sites will be able to opt in to downgrade protections to use quantum-resistant certificates.

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