Title:
QUANTUM HOMOMORPHISM SYMMETRY SEARCHABLE ENCRYPTION METHOD AND SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/166054
Kind Code:
A1
Abstract:
The present invention is suitable for data encryption searching. Provided is a quantum homomorphism symmetry searchable encryption method, comprising: A, randomly generating a plurality of private keys; B, encrypting plaintext data according to the private keys and keywords, and then saving same in a cloud server; C, according to ciphertext to be sorted, determining ciphertext corresponding to an identity identifier, and sorting the ciphertext containing the same identity identifier by means of a simplification operation to obtain an index table; D, encrypting search keywords according to reversed offset of the private keys, searching the ciphertext of the same user in the index table according to the encrypted search keywords and the identity identifier, and returning same; and E, decrypting a search result according to the private keys, and obtaining a decryption result. Plaintext information is encrypted by utilizing private keys and keywords, the generated ciphertext is saved in a cloud server, a data user can search ciphertext containing keywords by utilizing the characteristics of a quantum homomorphism encryption algorithm, and any information about the plaintext cannot be revealed without private keys.
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Inventors:
ZHANG PENG (CN)
SUN XIAOQIANG (CN)
LIU HONGWEI (CN)
YU JIANPING (CN)
SUN XIAOQIANG (CN)
LIU HONGWEI (CN)
YU JIANPING (CN)
Application Number:
PCT/CN2016/077681
Publication Date:
October 05, 2017
Filing Date:
March 29, 2016
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
H04L29/06
Foreign References:
| CN105933281A | 2016-09-07 | |||
| CN103873236A | 2014-06-18 | |||
| CN103944711A | 2014-07-23 |
Other References:
LI, QIAN ET AL.: "Efficient Multi-keyword Search over Secure Cloud Storage", COMPUTER SCIENCE, vol. 39, no. 12, 31 December 2012 (2012-12-31), pages 160, ISSN: 1002-137X
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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