METHOD GENERATING SESSION KEY FOR GROUP COMMUNICATION IN MOBILE ENVIRONMENT

摘要

The present invention relates to a method for generating a session key for a group communication in a mobile environment, which is connected to the server through a server of a group communication service provider and a wired / wireless communication network, and communicates with the server while moving, compared to the server. A method for generating a group session key for group communication in an asymmetric mobile environment consisting of a plurality of group communication user terminals with low computing capability, wherein a random random number is selected from each user terminal and a server, and the user's public random information is selected. A round I step of calculating and generating a signature of the user by a known signature algorithm in each user terminal and transmitting the user information consisting of the public random information and the signature to a server; A round II step of calculating, by a server, session key generation information based on the user information, and transmitting the session key generation information to each user terminal; And a session key calculation step of calculating a session key independently through the session key generation information in a server and each user terminal.;Session key, group communication, mobile environment