[Resource Topic] 2021/385: Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrices

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Title:
Solving the problem of Blockwise Isomorphism of Polynomials with Circulant matrices

Authors: Yasufumi Hashimoto

Abstract:

The problem of Blockwise Isomorphism of Polynomials was introduced by Santoso at PQCrypto 2020 as a generalization of the problem of Isomorphism of Polynomials. In the present paper, we describe how to solve this problem with circulant matrices, used in Santoso’s Diffie-Hellman type encryption scheme.

ePrint: https://eprint.iacr.org/2021/385

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