HYPERSPHERE-BASED MULTIVARIABLE PUBLIC KEY SIGNATURE/VERIFICATION SYSTEM AND METHOD

Title:

HYPERSPHERE-BASED MULTIVARIABLE PUBLIC KEY SIGNATURE/VERIFICATION SYSTEM AND METHOD

Document Type and Number:

WIPO Patent Application WO/2015/103932

Kind Code:

A1

Abstract:

Disclosed is a hypersphere-based multivariable public key signature/verification system, comprising a signature module and a verification module, wherein the signature module comprises a processor, an affine transformation inversion part I, a trapdoor part and an affine transformation inversion part II. Corresponding operations are sequentially executed on a message by various parts, one or more groups of solutions are produced after the processing of the trapdoor part, a group of solutions are randomly selected, then a signature is continuously produced by various parts, and finally the signature, together with the message, is transmitted to the processor. The verification module comprises a processor and a public key transformation part, wherein the processor transmits a signature to the public key transformation part to execute an operation, and then judges whether the obtained data is equal to a message in a memory or not: if so, the signature is valid, otherwise, the signature is invalid. The system and method do not use large-domain technology, the designed centralizing mapping contains N groups of "sphere centers" as private keys to realize centralizing concealing; and meanwhile, the operation speed is significantly high, and a signature process only needs a solution of a linear equation set.

Inventors:

TANG SHAOHUA (CN)
CHEN JIAHUI (CN)

Application Number:

PCT/CN2014/095592

Publication Date:

July 16, 2015

Filing Date:

December 30, 2014

Export Citation:

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Assignee:

UNIV SOUTH CHINA TECH (CN)

International Classes:

H04L9/30

Foreign References:

CN103780383A	2014-05-07
CN103490883A	2014-01-01
CN101977109A	2011-02-16
CN101383705A	2009-03-11

Other References: