Google DeepMind 发布 AlphaProof Code，四周内完成 Signal 加密核心的形式化验证
原标题：Google Deepmind's AlphaProof Code verified Signal's cryptographic core in four weeks instead of years
Google DeepMind 发布 AlphaProof Code，一个能数学化证明软件符合安全规格的 AI 系统。该系统在 Signal 加密协议上验证了实际运行在用户设备上的加密核心代码，基于 Gemini Carbon 的 AI 智能体四周内写下超过 600 万行 Lean 证明语言代码，标记约 1% 代码库供人工复核，并立即发现两个刻意植入的测试 bug。DeepMind 计划通过 CodeMender 等系统将方法扩展到电网和医疗设备。
为什么值得看原文给出验证范围、代码规模和误报比例等细节，可帮助读者评估AI形式化验证在真实安全代码上的适用程度。
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原文
Nov 11, 2026
Google Deepmind has unveiled AlphaProof Code, an AI system that mathematically proves software meets its security specs without errors. Researchers demonstrated the technology on Signal's encryption protocol, completing in four weeks work that typically takes years. Earlier verification efforts stopped at the theoretical design stage, according to a blog post by DeepMind researchers Pushmeet Kohli and Swarat Chaudhuri. AlphaProof Code verified the actual cryptographic core code running on users' devices. After experts defined formal security requirements, AI agents built on Gemini Carbon wrote over six million lines in the Lean proof language, flagging roughly one percent of the codebase for human review. Two bugs planted deliberately for testing were caught immediately.
AI agents in AlphaProof Code help create the specifications and then independently prove that the program code meets them. | Image: Google Deepmind
Signal CTO Ehren Kret says the approach strengthens trust in data privacy as AI threats grow. DeepMind plans to extend the method to power grids and medical devices through systems like CodeMender.
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