Title:
METHODS AND APPARATUSES FOR ENCRYPTING AND DECRYPTING DATA, STORAGE MEDIUM AND ENCRYPTED FILE
Document Type and Number:
WIPO Patent Application WO/2021/103802
Kind Code:
A1
Abstract:
The present application relates to the technical field of data processing, and provided are methods and apparatuses for encrypting and decrypting data, a storage medium, and an encrypted file. The method for encrypting data comprises: acquiring a first key, and performing an obfuscation operation on the first key and data to be encrypted to obtain obfuscation operation result data; acquiring a second key, and obtaining a first signature of the obfuscation operation result data according to the second key; acquiring a third key, and using the third key to encrypt the first key, the data, and the first signature to obtain target ciphertext; acquiring a fourth key, and obtaining a second signature of the target ciphertext according to the fourth key; and generating an encrypted file comprising the target ciphertext and the second signature. The security of data protection may be improved by using the technical solution of the present application.
Inventors:
CHEN LIN (CN)
XU BIN (CN)
YANG SEN (CN)
XU BIN (CN)
YANG SEN (CN)
Application Number:
PCT/CN2020/118318
Publication Date:
June 03, 2021
Filing Date:
September 28, 2020
Export Citation:
Assignee:
CHINA UNIONPAY CO LTD (CN)
International Classes:
H04L9/14; H04L29/06; H04L9/32
Foreign References:
| CN110891061A | 2020-03-17 | |||
| CN110414190A | 2019-11-05 | |||
| CN108632296A | 2018-10-09 | |||
| CN109660542A | 2019-04-19 | |||
| US20070271469A1 | 2007-11-22 |
Other References:
See also references of EP 3968597A4
Attorney, Agent or Firm:
BEIJING EAST IP LTD. (CN)
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