Genus Two Isogeny Cryptography
Genus Two Isogeny Cryptography
复制标题
第二类同源密码学
DOI:
10.1007/978-3-030-25510-7_16
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Y. Ti
中科院分区:
文献类型:
--
作者:
E. V. Flynn;Y. Ti
We study \((\ell ,\ell )\)-isogeny graphs of principally polarised supersingular abelian surfaces (PPSSAS). The \((\ell ,\ell )\)-isogeny graph has cycles of small length that can be used to break the collision resistance assumption of the genus two isogeny hash function suggested by Takashima. Algorithms for computing (2, 2)-isogenies on the level of Jacobians and (3, 3)-isogenies on the level of Kummers are used to develop a genus two version of the supersingular isogeny Diffie–Hellman protocol of Jao and de Feo. The genus two isogeny Diffie–Hellman protocol achieves the same level of security as SIDH but uses a prime with a third of the bit length.
影响因子:
0.7
作者:
Bruin N
通讯作者:
Bruin N