Title:
KEY MANAGEMENT METHOD AND RELATED DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/238694
Kind Code:
A1
Abstract:
Disclosed are a key management method and a related device. The method comprises: a client selects a random number and a key according to an operation instruction inputted by a user; generate a first encrypted ciphertext of the key according to the random number, the key, a first public key, and a second public key, wherein the first public key is determined according to a point on an elliptic curve and a private key of a hardware security module, and the second public key is determined according to the point on the elliptic curve and a private key of the client; generate a symmetric key sequence according to the key and a preselected Hash function, and according to the symmetric key sequence, encrypt cloud storage data to obtain a data ciphertext; and transmit the first encrypted ciphertext and the data ciphertext to a cloud server.
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Inventors:
KONG QINGLEI (CN)
Application Number:
PCT/CN2020/091002
Publication Date:
December 03, 2020
Filing Date:
May 19, 2020
Export Citation:
Assignee:
TENCENT TECH SHENZHEN CO LTD (CN)
International Classes:
H04L9/00
Foreign References:
| CN110417726A | 2019-11-05 | |||
| US20180212762A1 | 2018-07-26 | |||
| CN105119894A | 2015-12-02 |
Other References:
See also references of EP 3913850A4
Attorney, Agent or Firm:
DEQI INTELLECTUAL PROPERTY LAW CORPORATION (CN)
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