Title:
KEY TRANSMISSION METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/178890
Kind Code:
A1
Abstract:
A key transmission method and apparatus. The method comprises: a client sending a request message to a key management entity, wherein the request message comprises an encryption public key or first key exchange information; the key management entity encrypting, by using the encryption public key, a target key to obtain ciphertext, or encrypting, by using an encryption/decryption key obtained according to first key information, the first key exchange information, a first authentication signature and second key exchange information, a target key to obtain ciphertext; the key management entity sending to the client a response message comprising the ciphertext or the second key exchange information; and the client decrypting, by using an encryption private key, the ciphertext to obtain the target key, or decrypting, by using an encryption/decryption key obtained according to the first key exchange information of the client, the first authentication signature, and second key information and the second key exchange information of the key management entity, the ciphertext to obtain the target key. By means of the method, key transmission is realized using an encryption key pair or key negotiation information, so that key transmission security can be ensured.
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Inventors:
LI YONG (CN)
GENG FENG (CN)
DUAN LI (CN)
GENG FENG (CN)
DUAN LI (CN)
Application Number:
PCT/CN2021/078330
Publication Date:
September 01, 2022
Filing Date:
February 27, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L9/00
Foreign References:
| CN1534936A | 2004-10-06 | |||
| CN101286842A | 2008-10-15 | |||
| CN112054906A | 2020-12-08 | |||
| CN105577613A | 2016-05-11 | |||
| CN101600204A | 2009-12-09 | |||
| CN106453330A | 2017-02-22 | |||
| EP0651533A2 | 1995-05-03 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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