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Dually-Perturbed Matsumoto-Imai Signature (DPMS) Scheme
Masahito GOTAISHI Kohtaro TADAKI Ryo FUJITA Shigeo TSUJII
IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences
Publication Date: 2010/06/01
Online ISSN: 1745-1337
Print ISSN: 0916-8508
Type of Manuscript: Special Section PAPER (Special Section on Discrete Mathematics and Its Applications)
Category: Cryptography and Information Security
post-quantum cryptosystem, Multivariate Public Key Cryptosystem, digital signature,
Full Text: PDF(650.6KB)>>
A new signature scheme of MPKC is proposed. It is created by perturbing a traditional encryption scheme in two ways. The proposed perturbation polynomials successfully reinforce the Matsumoto-Imai cryptosystem This new signature scheme has a structure very difficult to cryptanalyze. Along with the security against algebraic attacks, its security against existing attacks is discussed. The experimental data imply that the scheme can create a both lightweight and secure signature system.