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Open AccessArticle

An Improved Identity-Based Multivariate Signature Scheme Based on Rainbow

Faculty of Mathematics and Computer Science, University of Science, VNU-HCM, 227 Nguyen Van Cu, District 5, Ho Chi Minh City 72711, Vietnam
Cryptography 2019, 3(1), 8; https://doi.org/10.3390/cryptography3010008
Received: 19 January 2019 / Revised: 14 February 2019 / Accepted: 14 March 2019 / Published: 17 March 2019
Multivariate Public Key Cryptography (MPKC) is one of the main candidates for post-quantum cryptography, especially in the area of signature schemes. In this paper, we instantiate a certificate Identity-Based Signature (IBS) scheme based on Rainbow, one of the most efficient and secure multivariate signature schemes. In addition, we revise the previous identity-based signature scheme IBUOV based on the Unbalanced Oil and Vinegar (UOV) scheme on the security and choice of parameters and obtain that our scheme is more efficient than IBUOV in terms of key sizes and signature sizes. View Full-Text
Keywords: post-quantum cryptography; multivariate cryptography; UOV; rainbow; identity-based signature post-quantum cryptography; multivariate cryptography; UOV; rainbow; identity-based signature
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Luyen, L.V. An Improved Identity-Based Multivariate Signature Scheme Based on Rainbow. Cryptography 2019, 3, 8.

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