MPKC的中心映射与公钥形式

J4 ›› 2012, Vol. 50 ›› Issue (4): 719-724.

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Central Mapping-and |Public Key Form-for MPKCs

ZHAO Bo, ZHAO Hongwei, SU Jinxuan, ZHAO Yongzhe

College of Computer Science and Technology, Jilin University, Changchun 130012, China

Received:2011-09-19 Online:2012-07-01 Published:2012-09-07
Contact: ZHAO Yongzhe E-mail:yongzhe@jlu.edu.cn

Abstract

Abstract:

We analyzed the relationship between the central mapping and the public key’s form for MPKCs. And we proved that only when the central mapping (x) of the MPKC contains the linear items, choosing S for affine transformation is meaningful. When (x) does not contain any linear item, S should be selected for linear transformation so as to not reduce the security of the system, and reduce the size of the public and private keys and improve the encryption and decryption efficiency of the system.

Key words: multivariate public key cryptography, central mapping, form of the public key

CLC Number:

赵博, 赵宏伟, 苏晋璇, 赵永哲. Central Mapping-and |Public Key Form-for MPKCs[J].J4, 2012, 50(4): 719-724.

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Central Mapping-and |Public Key Form-for MPKCs

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