Filippo Valsorda • 11/1/2025

Claude Code Can Debug Low-level Cryptography

The author details their experience debugging a failing implementation of the ML-DSA post-quantum signature algorithm in Go. After manual debugging failed, they used Claude Code, which quickly identified a low-level bug where a function was incorrectly reused, causing signature verification to always fail. The article serves as a case study on the effective use of AI coding assistants for complex, technical debugging tasks.

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#debugging #go #cryptography