Colecciones nacionales e internacionales de patentes

1. (WO2015127789) COMMUNICATION METHOD, APPARATUS AND SYSTEM BASED ON COMBINED PUBLIC KEY CRYPTOSYSTEM

Pub. No.:    WO/2015/127789    International Application No.:    PCT/CN2014/089536
Publication Date: Fri Sep 04 01:59:59 CEST 2015 International Filing Date: Tue Oct 28 00:59:59 CET 2014
IPC: H04L 9/30
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
Inventors: LIU, Xinbao
刘新保
Title: COMMUNICATION METHOD, APPARATUS AND SYSTEM BASED ON COMBINED PUBLIC KEY CRYPTOSYSTEM
Abstract:
The present invention provides a communication method, apparatus and system based on combined public key cryptosystem, wherein the method comprises obtaining a private key of a first node from a key generating center through the first node, obtaining the identification of a second node according to an adjacent node identification list, calculating a public key of the second node according to the identification of the second node, calculating a shared key parameter of the first node according to the private key of the first node and the public key of the second node and then calculating a shared key of the first node according to the shared key parameter of the first node, generating a first key authentication code corresponding to the shared key of the first node, sending to the second node a shared key authentication message comprising the first key authentication code, and receiving a shared key response message sent by the second node. The steps of calculation described above can be completed offline and the number of times of interaction between the nodes is reduced, thus when the first node initiates an authentication, this authentication can be completed within a very short period of time, thereby improving authentication efficiency.