LATTICE-BASED PROXY SIGNATURE METHOD, APPARATUS AND DEVICE, LATTICE-BASED PROXY SIGNATURE VERIFICATION METHOD, APPARATUS AND DEVICE, AND STORAGE MEDIUM - ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID

Title:

LATTICE-BASED PROXY SIGNATURE METHOD, APPARATUS AND DEVICE, LATTICE-BASED PROXY SIGNATURE VERIFICATION METHOD, APPARATUS AND DEVICE, AND STORAGE MEDIUM

Document Type and Number:

WIPO Patent Application WO/2023/206869

Kind Code:

A1

Abstract:

A lattice-based proxy signature method, apparatus and device, a lattice-based proxy signature verification method, apparatus and device, and a storage medium. Polynomials are randomly selected in rings to calculate public and private keys of nodes, and the magnitudes of proxy public and private keys are the same as the magnitudes of public and private keys of an original signer. Therefore, compared with existing proxy signature schemes, the present application has smaller lengths of public and private keys and higher storage efficiency. Proxy signature information generated in the present application shows a signature of the original signer and also shows a signature of a proxy signer. Once a proxy signature is created, the proxy signature cannot be repudiated by the proxy signer, and has strong non-repudiation and strong unforgeability. The proxy signature method has the advantage of resisting quantum computer attack.

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Inventors:

QIAN BIN (CN)
HU HOUPENG (CN)
XIAO YONG (CN)
OU JIAXIANG (CN)
ZHOU MI (CN)
LI PENGCHENG (CN)
LUO YI (CN)
XIAO YANHONG (CN)
WANG JI (CN)
WU XIN (CN)
LI FUSHENG (CN)
HE PEILIN (CN)
LIN XIAOMING (CN)
GAO ZHENGHAO (CN)
TANG JIANLIN (CN)
CHEN ZERUI (CN)
ZHANG FAN (CN)
LONG GAOYI (CN)
CHANG QIANG (CN)
FENG QIN (CN)
CEN YUANHONG (CN)

Application Number:

PCT/CN2022/113232

Publication Date:

November 02, 2023

Filing Date:

August 18, 2022

Export Citation:

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Assignee:

ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID (CN)
GUIZHOU POWER GRID CO LTD (CN)

International Classes:

H04L9/32

Foreign References:

CN114584323A	2022-06-03
CN111314059A	2020-06-19
CN109150536A	2019-01-04
CN103986576A	2014-08-13
CN113541952A	2021-10-22
US20050005126A1	2005-01-06

Attorney, Agent or Firm:

UNITALEN ATTORNEYS AT LAW (CN)

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