Title:
QUANTUM COLOR IMAGE ENCRYPTION METHOD BASED ON DIRECTION MODIFICATION AND CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2021/036361
Kind Code:
A1
Abstract:
The present invention discloses a quantum color image encryption method based on direction modification and a circuit, based on a basic quantum bit gate, quantum modular circuit designs of a parallel adder, a parallel subtracter, a comparator, a cyclic shift plus 1 and a cyclic shift minus 1 are respectively given, an implementation circuit of quantum color image shorthand encryption is designed based on the modular circuits. It can be known from the implementation circuit complexity analysis of the color image shorthand encryption, for a two-dimensional quantum color image with 2 2n pixels, R, G and B channels are respectively represented by q quantum bits, the shorthand encryption algorithm is an efficient transformation method, and the complexity of the circuit is O(q 2+n), which cannot be achieved by other classical geometric transformation. The present invention is applicable to many practical image processing application fields, for example, an effective and safe shorthand encryption algorithm is needed for achieving the purpose of transmitting secret information by means of a public image, which has great significance in perfecting and applying the quantum image processing theory.
Inventors:
ZHOU RIGUI (CN)
HU WENWEN (CN)
FAN PING (CN)
ZHOU RIRONG (CN)
WANG GANBIN (CN)
HU WENWEN (CN)
FAN PING (CN)
ZHOU RIRONG (CN)
WANG GANBIN (CN)
Application Number:
PCT/CN2020/091470
Publication Date:
March 04, 2021
Filing Date:
May 21, 2020
Export Citation:
Assignee:
UNIV SHANGHAI MARITIME (CN)
International Classes:
H04L9/08; H04N1/44; H04N1/46
Foreign References:
| CN110474769A | 2019-11-19 | |||
| KR20170095508A | 2017-08-23 | |||
| KR20170095508A | 2017-08-23 | |||
| CN107256529A | 2017-10-17 |
Other References:
HU, WENWEN: "Research on Quantum Image Scale and Watermarking Technology", CHINA MASTER'S THESES FULL-TEXT DATABASE, INFORMATION TECHNOLOGY SERIES (MONTHLY) 12.1018, 15 January 2019 (2019-01-15), pages 1 - 91, XP055785716
HU, WENWEN: "Research on Quantum Image Scale and Watermarking Technology", CHINA MASTER'S THESES FULL-TEXT DATABASE, INFORMATION TECHNOLOGY SERIES (MONTHLY) 12.1018, 15 January 2019 (2019-01-15), XP055785716
HU, WENWEN: "Research on Quantum Image Scale and Watermarking Technology", CHINA MASTER'S THESES FULL-TEXT DATABASE, INFORMATION TECHNOLOGY SERIES (MONTHLY) 12.1018, 15 January 2019 (2019-01-15), XP055785716
Attorney, Agent or Firm:
SUNSHINEIP INTELLECTUAL PROPERTY LAW FIRM (CN)
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