Public Key Identification Based on the Equivalence of Quadratic Forms
Public Key Identification Based on the Equivalence of Quadratic Forms
复制标题
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:
影响因子:
--
通讯作者:
C. Schnorr
中科院分区:
文献类型:
--
作者:
R. Hartung;C. Schnorr
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.