METHOD AND EQUIPMENT FOR ENSURING COMMUNICATION SECURITY

摘要

A method and equipment for ensuring communication security are provided. The method includes: both sides of communication of a wireless link estimating wireless channel respectively; extracting scheduled quantity of channel information respectively from the respective estimated result of channel; both sides of communication or either side coding a part or all of the locally extracted channel information, and sending the coded channel information to the other side; both sides of communication or either side performing error correcting on the locally extracted channel information according to the received coded channel information, and obtaining the channel information correspond to the other side; both sides of communication generating a shared cryptographic key utilizing the locally extracted channel information and the obtained channel information by error correcting respectively, or either side generating the shared cryptographic key utilizing the locally extracted channel information, the other side generating the shared cryptographic key utilizing the obtained channel information by local error correcting; utilizing the shared cryptographic key to carry out encrypted communication. Utilizing the method may improve the security of wireless communication system.