Abstract: Through analysis on the internal structure and the working characteristic of Bluetooth chip, a parallel cryptography algorithm instruction structure model based on Digtal Signal Processor (DSP) coprocessor and the algorithm working procedure was designed. The model was designed by considering two aspects of time overhead and storage space. And the model implemented the high computational and complex cryptography algorithm with DSP coprocessor possible during the Bluetooth communication. The experimental results show that the method can reduce the influence of complex cryptography to Bluetooth transmission.

Key words: Bluetooth security, cryptography algorithm, Bluetooth chip, Digtal Signal Processor (DSP) coprocessor, algorithm performance

摘要： 在深入分析蓝牙芯片内部结构的基础上，结合蓝牙芯片工作特点，设计了基于数字信号处理器(DSP)协处理器密码算法指令并行结构模型和算法工作的过程。该模型综合考虑算法存储空间和时间开销两方面的性能，将计算量大、复杂度高的密码算法利用DSP实现。实验结果表明，该方法可以减小密码算法对蓝牙传输性能的影响，解决了蓝牙单芯片实现复杂算法的问题。

关键词: 蓝牙安全, 密码算法, 蓝牙单芯片, 数字信号处理器协处理器, 算法性能