High secure infrared communication application

Security is always an important issue in communication. Communication data may be got by malicious people during communication. Many studies have been focused for safety communication until today. However, any studies in the field of security haven?t been reach perfection like all fields of technology. In recent years due to advancing digital electronic technology, communication has become easier and reliable.In this thesis, design and applications are performed to increase security in IR based systems, which can work at high speeds in wireless environment with low costs. Firstly, a new protocol is called SATE is designed instead of standard protocol. After TEA algorithm, which is a block encryption algorithm in symmetric key systems, is added to the system. Finally, a user interface implemented in the system to prevent unauthorized entries from transmitting circuit. This interface will accept users who are authorized to use system. With this interface administrator can check the user statistics such as usage rates and access times of users, and interfere the system if necessary. Success of SATE protocol is performed according to memory size and performance of work measures and then compared with existing protocols.