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arXiv 0907.4273cs.CR
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试探攻击与错误攻击的二重性

On the Duality of Probing and Fault Attacks

Berndt M. Gammel, Stefan Mangard

摘要:

在这项工作中,我们研究的问题,同时隐私和完整性保护的密码电路。我们考虑一个白盒场景,一个强大但有限的攻击者。一个简洁的度量的探测和故障安全的水平,这是直接关系到一个现实的攻击者的能力。为了研究探测和故障安全的相互关系,我们引入了一个共同的数学框架的基础上的形式主义的信息和编码理论。该框架统一了已知的线性掩蔽方案。我们证明了一个中心定理的线性码的性质,导致最佳的秘密共享方案。这些方案提供了对抗具有给定强度的攻击者所需的掩码数量的下限。新的形式主义揭示了一个有趣的探测和故障安全问题之间的对偶原则,并提供了一个统一的观点隐私和完整性保护使用错误检测码。最后,我们介绍了一类新的线性防篡改码。这些都有资格保持安全性,防止攻击者同时安装探测和故障攻击。

英文摘要:

In this work we investigate the problem of simultaneous privacy and integrity protection in cryptographic circuits. We consider a white-box scenario with a powerful, yet limited attacker. A concise metric for the level of probing and fault security is introduced, which is directly related to the capabilities of a realistic attacker. In order to investigate the interrelation of probing and fault security we introduce a common mathematical framework based on the formalism of information and coding theory. The framework unifies the known linear masking schemes. We proof a central theorem about the properties of linear codes which leads to optimal secret sharing schemes. These schemes provide the lower bound for the number of masks needed to counteract an attacker with a given strength. The new formalism reveals an intriguing duality principle between the problems of probing and fault security, and provides a unified view on privacy and integrity protection using error detecting codes. Finally, we introduce a new class of linear tamper-resistant codes. These are eligible to preserve security against an attacker mounting simultaneous probing and fault attacks.

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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