Title:
DATA ENCRYPTION METHOD, DATA QUERY METHOD, DATA ENCRYPTION APPARATUS, DATA QUERY APPARATUS, DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/178958
Kind Code:
A1
Abstract:
Disclosed are a data encryption method, a data query method, a data encryption apparatus, a data query apparatus, a device and a storage medium. The data encryption method comprises: acquiring a plaintext keyword of a plaintext file, and creating, based on the plaintext keyword, a file index of the plaintext file using a locality sensitive hashing function; acquiring a first random user key sent by a key management center; using the first random user key to respectively encrypt the plaintext file and the file index to acquire an encrypted file and an encrypted index; and sending the encrypted file and the encrypted index to a server side to instruct the server side to encrypt the encrypted file using a first random server side key sent by the key management center, so as to form a ciphertext file, wherein the first random user key is associated with the first random server side key. The data encryption method reduces the storage pressure of a system and improves the data security.
Inventors:
WANG YI (CN)
Application Number:
PCT/CN2018/091912
Publication Date:
September 26, 2019
Filing Date:
June 20, 2018
Export Citation:
Assignee:
PING AN TECH SHENZHEN CO LTD (CN)
International Classes:
G06F21/62
Foreign References:
| CN107220343A | 2017-09-29 | |||
| CN107359986A | 2017-11-17 | |||
| CN106326360A | 2017-01-11 | |||
| CN106330865A | 2017-01-11 | |||
| US20100138399A1 | 2010-06-03 |
Attorney, Agent or Firm:
SHENZHEN ZHONGDING INTELLECTUAL PROPERTY AGENCY (CN)
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