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arXiv 1102.2566cs.CRcs.ITmath.IT
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基于列表译码的McEliece密码体制密钥简化

Key Reduction of McEliece's Cryptosystem Using List Decoding

Morgan Barbier, Barreto S. L. M. Paulo

摘要:

为了减小公钥的大小,提出了基于代码的McEliece密码系统的不同变体。所有这些变体都使用非常结构化的代码,这为利用底层结构的新攻击打开了大门。在本文中,我们表明,并元变体可以设计为抵抗所有已知的攻击。针对二进制Goppa码的列表译码算法的新研究,说明了如何在给定公钥大小的情况下提高其安全级别。使用国家的最先进的列表解码算法,而不是唯一的解码,我们表现出约4%的标准McEliece密码系统的密钥大小增益和高达21%的调整后的二元变量。

英文摘要:

Different variants of the code-based McEliece cryptosystem were pro- posed to reduce the size of the public key. All these variants use very structured codes, which open the door to new attacks exploiting the underlying structure. In this paper, we show that the dyadic variant can be designed to resist all known attacks. In light of a new study on list decoding algorithms for binary Goppa codes, we explain how to increase the security level for given public keysizes. Using the state-of-the-art list decoding algorithm instead of unique decoding, we exhibit a keysize gain of about 4% for the standard McEliece cryptosystem and up to 21% for the adjusted dyadic variant.

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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