一种新型序列密码的设计与实现  

Design and Implementation of a New Stream Cipher

作　　者：赵培[1] 赵景琰[1] 金鹰翰[1] 赵颖[1] 王进祥[1] 

机构地区：[1]哈尔滨工业大学微电子中心,哈尔滨150001

出　　处：《微处理机》2010年第3期21-24,共4页Microprocessors

摘　　要：基于经典的序列密码发生器,提出了一种可控序列密码发生器,该设计结合了LFSR和FCSR的代数特性,获得更大的混淆。由该方法产生的序列具有均匀性好、相关性小的特点;并用FPGA对加密解密系统加以实现,最终的实现结果表明该方法资源消耗少、加密速度快。该密码系统能够应用于网络安全等领域。Based on classical stream cipher algorithms, this paper proposes a new steam cipher generator which can generate controlled pseudorandom sequences and also this generator combines the good characters of LFSR and FCSR to make the sequences have good linear complexity, and the sequences generated by the system have a high linear complexity. In the end realize the new encryption system on FPGA board, the results shows this system has a high speed on encryption and uses limited resources. The system can be employed in Intemet security.

关 键 词：序列密码 移位寄存器 级联 密钥 FPGA开发板 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]