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arXiv 2008.11927cs.ITcs.CRmath.ITmath.RA
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伽罗瓦环同构问题

Galois ring isomorphism problem

Karan Khathuria

摘要:

最近,Doröz等人(2017)提出了一个新的困难问题,称为有限域同构问题,并基于该问题构建了一个完全同态加密方案。本文将这一问题推广到伽罗瓦环的情形,得到伽罗瓦环同构问题。推广是通过提升相应的剩余域之间的同构来实现的。因此,这种推广允许我们在整数模素数幂环上构造密码原语,而不是大素数。

英文摘要:

Recently, Doröz et al. (2017) proposed a new hard problem, called the finite field isomorphism problem, and constructed a fully homomorphic encryption scheme based on this problem. In this paper, we generalize the problem to the case of Galois rings, resulting in the Galois ring isomorphism problem. The generalization is achieved by lifting the isomorphism between the corresponding residue fields. As a result, this generalization allows us to construct cryptographic primitives over the ring of integers modulo a prime power, instead of a large prime number.

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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