%0 Conference Proceedings
%T Efficient Variant of Rainbow without Triangular Matrix Representation
%+ Institute of Systems, Information Technologies and Nanotechnologies
%+ Kyushu University
%A Yasuda, Takanori
%A Takagi, Tsuyoshi
%A Sakurai, Kouichi
%Z Part 2: The 2014 Asian Conference on Availability, Reliability and Security, AsiaARES 2014
%< avec comité de lecture
%( Lecture Notes in Computer Science
%B 2nd Information and Communication Technology - EurAsia Conference (ICT-EurAsia)
%C Bali, Indonesia
%Y David Hutchison
%Y Takeo Kanade
%Y Bernhard Steffen
%Y Demetri Terzopoulos
%Y Doug Tygar
%Y Gerhard Weikum
%Y Linawati
%Y Made Sudiana Mahendra
%Y Erich J. Neuhold
%Y A Min Tjoa
%Y Ilsun You
%Y Josef Kittler
%Y Jon M. Kleinberg
%Y Alfred Kobsa
%Y Friedemann Mattern
%Y John C. Mitchell
%Y Moni Naor
%Y Oscar Nierstrasz
%Y C. Pandu Rangan
%I Springer
%3 Information and Communication Technology
%V LNCS-8407
%P 532-541
%8 2014-04-14
%D 2014
%R 10.1007/978-3-642-55032-4_55
%K Post-quantum cryptography
%K Multivariate public key cryptosystems
%K Rainbow
%Z Computer Science [cs]
%Z Humanities and Social Sciences/Library and information sciencesConference papers
%X Multivariate Public Key Cryptosystems (MPKC) is one of candidates for post-quantum cryptography. Rainbow is an MPKC digital signature scheme, with relatively efficient encryption and decryption processes. However, the size of MPKC key is substantially larger than that of an RSA cryptosystem for the same security level. In this paper, we propose a variant of Rainbow that has a smaller secret key. The smaller secret key is to the result of a different description of the quadratic polynomials appearing in the secret key from that of the original Rainbow. In addition, our scheme improves the efficiency of the Rainbow’s signature generation. In particular, the secret key is reduced in size by about 40% and the signature generation is sped up by about 30% at the security level of 100 bits.
%G English
%Z TC 5
%Z TC 8
%2 https://inria.hal.science/hal-01397267/document
%2 https://inria.hal.science/hal-01397267/file/978-3-642-55032-4_55_Chapter.pdf
%L hal-01397267
%U https://inria.hal.science/hal-01397267
%~ SHS
%~ IFIP-LNCS
%~ IFIP
%~ IFIP-TC
%~ IFIP-TC5
%~ IFIP-TC8
%~ IFIP-ICT-EURASIA
%~ IFIP-LNCS-8407