The Great Certificate Size Explosion – IPsec Series, Part 7

· Blogs Cisco · Aug. 17, 2026, 2:01 p.m.
Summary
This blog post explores the generation of classical and post-quantum certificates using OpenSSL 3.5, showcasing their differences in size and security. It includes practical demonstrations of signing, verifying, and tampering with these certificates, contributing insights into the challenges and considerations for IPsec protocols in the era of quantum computing.
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