一种嵌入式系统软件水印识别器的VLSI实现

作者：罗 江，沈海斌 日期：2007-08-31/span> 浏览：3883 查看PDF文档

                                                        一种嵌入式系统软件水印识别器的VLSI实现*
                                                                             罗 江，沈海斌
                                        （浙江大学 超大规模集成电路设计研究所，浙江 杭州 310027）

摘 要：提出了一种基于分支软件水印方案识别器的VLSI实现。硬件形式的识别器一般难以获取嵌入式系统内部的函数返回地址，通过改进获取指纹信息分支函数（FBF）入口的方法，使得只需要根据系统的程序指针和指令字就可以完成FBF函数入口的识别，使原有方法更适用于嵌入式系统。最后针对所支持的指令集进行了仿真测试，并对设计实现进行了逻辑综合。性能分析表明，硬件形式识别器识别速度远远超过软件的识别速度。
关键词：嵌入式系统；软件水印；无条件分支；超大规模集成电路

                    VLSI implementation of recognizer for software watermarking in embedded system
                                                             LUO Jiang, SHEN haibin
                              (Institute of VLSI Design, Zhejiang University, Hangzhou 310027, China)

Abstract: A VLSI implementation of recognizer for a branchbased software watermarking scheme was introduced. It is usually hard for hardware recognizers to get inner return address of the embedded system, by improving the method of accessing the entry of fingerprinting branch function (FBF), only program counter and instruction word is necessary to the recognition of FBF entry, making the method more suitable for embedded systems. Finally, a simulation had been launched in accordance with supported instruction set, and the whole design was logic compiled. According to performance analysis, hardware recognizers run at far more speed than software does.
Key words: embedded system; software watermarking; unconditional branch; vory large scale integration (VLSI)

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