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-  2019 

An Improved Identity-Based Multivariate Signature Scheme Based on Rainbow

DOI: https://doi.org/10.3390/cryptography3010008

Keywords: post-quantum cryptography, multivariate cryptography, UOV, rainbow, identity-based signature

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Abstract:

Abstract 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-Tex

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