Date Added: Mar 2011
Wireless communication is used to transfer information over short distances that is a few meters as in television remote control or long distances for thousands or millions of kilometers for radio communications. It includes GPS units, garage door openers and or garage doors, wireless computer mice, keyboards and headsets, satellite television and cordless telephones. Wireless communication in computers is an effective approach for disseminating data to a number of users. To provide secure access to data in wireless broadcast services, symmetric-key based encryption is used. Symmetric-key based encryption is used to ensure that only users who own the valid keys can decrypt the data.