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High-Purity Fact Pipeline
Let's Encrypt
Global
June 4, 2026
"Let's Encrypt plans to use Merkle Tree Certificates (MTCs) to achieve post-quantum security for Web-PKI. Testing is scheduled for late 2026, with production readiness expected in 2027. MTCs are chosen to mitigate the large size of post-quantum signatures compared to traditional methods."
Author: Jean-Philippe Aumasson
This book provides a comprehensive and accessible overview of modern cryptographic primitives, including the challenges posed by quantum computing and the necessity for post-quantum transitions in PKI infrastructures.