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1. (WO2017032242) KEY GENERATION METHOD AND APPARATUS

Pub. No.:    WO/2017/032242    International Application No.:    PCT/CN2016/095522
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Wed Aug 17 01:59:59 CEST 2016
IPC: H04L 29/06
Applicants: ALIBABA GROUP HOLDING LIMITED
阿里巴巴集团控股有限公司
AN, Qing
安勍
FU, Yingfang
付颖芳
Inventors: AN, Qing
安勍
FU, Yingfang
付颖芳
Title: KEY GENERATION METHOD AND APPARATUS
Abstract:
The present application provides a key generation method and apparatus. The key generation method comprises: encrypting, by using an initial key, a first key factor generated by a first device, and sending the encrypted first key factor to a second device by means of a first secure channel, the initial key being a pre-set key between the first device and the second device; receiving, by means of the first secure channel, a second key factor encrypted by the initial key, the second key factor being generated by the second device; decrypting the second key factor that is received by means of the first secure channel and is encrypted by the initial key, so as to obtain the second key factor; and generating a shared key between the first device and the second device according to the first key factor and the second key factor. According to the technical solution of the present invention, a gateway device cannot acquire a shared key negotiated between a first device and a second device, such that it is ensured that data is more securely transmitted between the first device and the second device, thereby reducing the risk of illegally capturing the data in the transmission process.