Public Key Identification Based on the Equivalence of Quadratic Forms

Public Key Identification Based on the Equivalence of Quadratic Forms
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基于二次形式等价性的公钥识别

DOI:
10.1007/978-3-540-74456-6_31
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发表时间:
2007
期刊:
International Symposium on Mathematical Foundations of Computer Science
影响因子:
--
通讯作者:
C. Schnorr
C. Schnorr
中科院分区:
--
文献类型:
--
作者:
R. Hartung;C. Schnorr

文献摘要

被引文献

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在随机约简下,证明了二次型的计算等价问题是NP-难的,特别是对于不定的、具有整数系数的三元二次型。这一结果取决于科恩-列斯特拉关于类号的启发式的一个变体。我们的识别方案证明了等价变换的知识。
The computational equivalence problem for quadratic forms is shown to be NP-hard under randomized reductions, in particular for indefinite, ternary quadratic forms with integer coefficients. This result is conditional on a variant of the Cohen-Lenstra heuristics on class numbers. Our identification scheme proves knowledge of an equivalence transform.