Information publishing method and system based on group shared key
A technology for information release and key sharing, applied in the field of network communication, it can solve problems such as the limitation of the application scope of communication mechanisms, and achieve the effect of less resource requirements
Active Publication Date: 2021-03-30
MAXIO TECH HANGZHOU LTD
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Problems solved by technology
In the above-mentioned patents and similar information release schemes, before establishing a secure channel for sensitive information, the node device needs to submit private information via the reverse secure channel, and the server specifies the member serial number via the forward secure channel, thus making the application of this communication mechanism limited range
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[0041] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.
[0042] In this application, the term "key solving parameter" refers to the parameters calculated by the server based on the identification information V of the group members, the group shared key k, and the random number r, which can be released on the open channel, and the terminal solves the key parameters are reversed to obtain the group shared key k.
[0043] The term "private identification code" means a globally unique identification code in the ter...
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The invention discloses an information publishing system and method. The information publishing system comprises: a server used for generating a group shared key and a key solving parameter corresponding to the group shared key, and the server adopts the group shared key to encrypt sensitive information to obtain encrypted information; and a plurality of terminals that receive the information broadcasted by the server through an open channel, decrypt the encrypted information by adopting the group shared key to obtain the sensitive content, and adopt the public key of the server to encrypt theprivate identification code and submit the private identification code to the server in a ciphertext form to form a group member identity data set. In the information publishing process, the server only needs to transmit ciphertext information and secret key solving parameters without secrecy to the terminal, and due to the fact that secret key solving needs to be assisted by group member privateinformation which cannot be obtained publicly, the mechanism can ensure that sensitive information is transmitted safely on an open channel.
Description
technical field [0001] The present invention relates to the technical field of network communication, and more specifically, to an information distribution method and an information distribution system based on a group shared key. Background technique [0002] With the rapid development of network technology, more and more important information has been transmitted on the network, and people are paying more and more attention to information security. Private communication on the Internet usually requires encryption of information, and key generation and management is the core of private communication. According to the different transmission objects, Internet communication can be divided into three situations: one machine to one machine, one machine to many machines, and many machines to many machines. Different types of private communication transmit private information based on different communication mechanisms. [0003] In one-to-many (1:N) communication, broadcast infor...
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IPC IPC(8): H04L9/08H04L29/06
CPCH04L9/085H04L9/0866H04L63/0428H04L63/0435H04L63/06H04L9/0833H04L9/14
Inventor 方刚许伟蔡焱陈军闻哲航梁力陈国华卢一鸣
Owner MAXIO TECH HANGZHOU LTD