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arXiv 2207.04785cs.CRcs.LG
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SALSA:利用 Transformer 攻击格密码学

SALSA: Attacking Lattice Cryptography with Transformers

University of Chicago(芝加哥大学);University of Birmingham(伯明翰大学);Meta AI

Emily Wenger, Mingjie Chen, François Charton, Kristin Lauter

AI总结:

本文提出 SALSA,通过训练 Transformer 执行模运算并结合统计密码分析,对基于 LWE 的格密码方案实施机器学习攻击,可恢复中小型稀疏二元秘密实例。

摘要:

当前部署的公钥密码系统将容易受到全尺寸量子计算机的攻击。因此,“抗量子”密码系统需求很高,而基于被称为带误差学习(LWE)的困难问题的格基密码系统,已成为标准化的有力候选者。在本工作中,我们训练 Transformer 执行模运算,并将半训练模型与统计密码分析技术相结合,提出 SALSA:一种针对基于 LWE 的密码方案的机器学习攻击。SALSA 能够针对具有稀疏二元秘密的中小型 LWE 实例完全恢复秘密,并可能扩展到攻击现实世界中基于 LWE 的密码系统。

英文摘要:

Currently deployed public-key cryptosystems will be vulnerable to attacks by full-scale quantum computers. Consequently, "quantum resistant" cryptosystems are in high demand, and lattice-based cryptosystems, based on a hard problem known as Learning With Errors (LWE), have emerged as strong contenders for standardization. In this work, we train transformers to perform modular arithmetic and combine half-trained models with statistical cryptanalysis techniques to propose SALSA: a machine learning attack on LWE-based cryptographic schemes. SALSA can fully recover secrets for small-to-mid size LWE instances with sparse binary secrets, and may scale to attack real-world LWE-based cryptosystems.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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