The V8 JavaScript Runtime Undermined My Constant-Time JavaScript Library

· Soatok Dreamseeker · Sept. 12, 2026, 7:19 a.m.
Cryptography Vulnerability cache-timing attack Javascript Javascript Cryptography software development v8
Summary
The author reflects on their previous blog post about side-channel attacks in cryptography, discussing the implications of runtime optimizations in the V8 JavaScript engine on their earlier constant-time JavaScript library, highlighting the challenges faced in ensuring security amidst evolving technology.
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