LED加解密融合优化实现研究

Optimal Implementation Research of LED Encryption and Decryption Fusion

研究了LED密码算法加解密融合优化实现方法,针对LED密码算法特点,在加密模块内部结构添加一些控制信号及寄存器,不需要增加任何新模块,在低面积低资源占用的情况下实现LED加解密融合硬件实现。在LED加解密融合实现时进行了优化,采用轮间流水线结构,将循环展开结构按各加解密轮划分为一系列流水线,其中每一轮加解密变换为一级,可以有效提高加解密速度;充分利用LED密码算法在轮重复运算的特点,复用相同轮运算部分,实现一个可以完成一轮加解密运算的LEDRound模块。对LED加解密融合进行了FPGA硬件实现下载实验,实验结果表明LED加解密融合优化后实现仅需9 639Slices,而原LED单独加密算法实现就需10 222Slices,优化方法使融合后的LED加解密比原始LED加密实现的面积还减小了583Slices,同时加密速率没有降低。

Optimal implementation method of LED encryption and decryption fusion is proposed.The control signals and register is added to the internal structure of encryption module according to the characteristics of LED symmetric cryptographic algorithm.It needs not to add any new modules so that the low area and low resource of LED fusion is realized.The wheel pipeline structure is used.The circular structure is divided into a series of pipeline according to the wheel of encryption and decryption.Each round of encryption and decryption transform is constructed a class.These can effectively improve the speed of encryption and decryption.The same round operation is reused.The encryption and decryption fusion of LED is downloaded on FPGA.The experimental results show that LED fusion only needs 9 639 of Slices.The original LED encryption algorithm needs 10 222 Slice so that the area of optimization LED fusion reduce by 583 Slices.At the same time,the encryption speed rate did not decrease.