Title:
GROUP MESSAGE ENCRYPTION METHOD AND APPARATUS, DEVICE AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/160420
Kind Code:
A1
Abstract:
Provided in the embodiments of the present application are a group message encryption method and apparatus, a device and a storage medium, the method comprising: receiving a master key ciphertext and a validity period interval sent by a master client, the master key ciphertext being generated on the basis of a random master key and a set attribute policy; and on the basis of an authentication parameter associated with the attribute policy, decrypting the master key ciphertext to obtain the random master key, and when a current timestamp meets the validity period interval, performing computation on the basis of the random master key to obtain an one-time encryption key; and encrypting and assembling message data on the basis of the one-time encryption key to obtain ciphertext information and then broadcasting the ciphertext information. The solution remarkably reduces key management scale and calculation time overhead, and meanwhile, meets a real-time requirement.
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Inventors:
LI YAN (SG)
Application Number:
PCT/CN2023/075675
Publication Date:
August 31, 2023
Filing Date:
February 13, 2023
Export Citation:
Assignee:
BIGO TECH PTE LTD (SG)
LI YAN (SG)
LI YAN (SG)
International Classes:
H04L9/40
Foreign References:
| CN114401151A | 2022-04-26 | |||
| CN108155987A | 2018-06-12 | |||
| CN109981663A | 2019-07-05 | |||
| CN103338437A | 2013-10-02 | |||
| US20180063094A1 | 2018-03-01 |
Attorney, Agent or Firm:
BEIJING ZFANG PATENT AGENCY (CN)
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