两种算法相结合的基带数据流加密编解码方法

Baseband Data Stream Encryption and Decryption by Combination of Two Algorithms

针对传统单一的AES(高级加密标准)加密方法不能对标准帧格式的基带数据流进行全帧加密的缺点,提出一种将两个加密方法相结合的加密方式。在FPGA(现场可编程门阵列)平台上,通过综合使用AES和RC4(对称流密码)两种加密方式,来对标准帧格式的基带数据码流进行加密和解密。采用Verilog硬件描述语言对综合后的算法进行仿真表明:基于FPGA的数据加密、解密系统能够在不改变帧结构的前提下稳定、高效地完成基带数据流加密和解密工作。

The traditional single AES（Advanced Encryption Standard） encryption method could not encrypt the baseband data stream with standard frame format. To solve the problma, a encryption method which combining two methods of encryption was proposed On the FPGA （field prograrmmble gata arry） platform, the baseband data stream was encrypted and decrypted by the integration of AES and RCA. Verilog hardware description language was adopted to carry out the algorithm Simulation result indicated that the FPGA-based data encryption and decryption syst^n could, without changing the frame structure,complete the baseband data stream encryption and decryption in a stable and efficient manner.