Encryption Algorithm. Bluetooth Technology

This paper gives the result making research into the encryption algorithm suit to Bluetooth.After the basic knowledge of cryptography, the standard of Bluetooth technology and its security settings are introduced briefly, the encryption algorithm in Bluetooth is analyzed particularly. The simulation program is compiled by using Visual C++ 6.0 on the Windows platform. The process of encrypting data in Bluetooth is implemented and the results of the program are analyzed. Several questions in encryption algorithm in Bluetooth, such as non-link key cheating, address cheating and EO are summarized and several improvements are also brought forward.According to the characteristic of Bluetooth, block ciphers including DES and IDEA are reworked. BTJDES and BT_IDEA adapted to Bluetooth are induced. So more reliable data safeguards are gained, more extensive fields can be applied for Bluetooth. BT_DES and BTJDEA are realized hi Visual C++ 6.0 on Windows and experimental data is obtained and discussed. It is proved feasible and effective to encrypt data in Bluetooth using BT_DES. Furthermore, a hardware settlement of BT_DES is given for farther researching.The encryption algorithm of this paper will provide reference for choosing the encryption algorithm to guarantee the security of data exchange when developing all kinds of WLAN.