Cryptology ePrint Archive: Report 2021/1046

On the modifier Q for multivariate signature schemes

Yasufumi Hashimoto

Abstract: At PQCrypto 2021, Smith-Tone proposed a new modifier, called ``Q'', to construct a fast multivariate signature scheme from a known scheme. In the present paper, we propose an idea to weaken the security of this modifier.

Category / Keywords: public-key cryptography / multivariate public-key cryptosystems, modifier Q

Date: received 11 Aug 2021

Contact author: hashimoto at math u-ryukyu ac jp

Available format(s): PDF | BibTeX Citation

Note: 3 pages

Version: 20210816:131227 (All versions of this report)

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