[1]袁鹏飞.基于ARM7的数字视频加解密系统研究[J].南京师范大学学报(工程技术版),2015,15(03):055.
 Yuan Pengfei.Reaserch of Digital Video Encryption and DecryptionSystem Based on ARM7[J].Journal of Nanjing Normal University(Engineering and Technology),2015,15(03):055.
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基于ARM7的数字视频加解密系统研究
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
15卷
期数:
2015年03期
页码:
055
栏目:
计算机工程
出版日期:
2015-09-20

文章信息/Info

Title:
Reaserch of Digital Video Encryption and DecryptionSystem Based on ARM7
作者:
袁鹏飞
南京晓庄学院电子工程学院,江苏 南京 211171
Author(s):
Yuan Pengfei
School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171,China
关键词:
数字视频加解密ARM7骑士巡游变换Arnold变换
Keywords:
digital videoencryption and decryption systemARM7Knight-tour transformArnold transform
分类号:
TP391
文献标志码:
A
摘要:
为了在资源受限的ARM7嵌入式平台里实现数字视频加解密系统功能,在达到较好信息隐藏目的同时而不带来庞大的计算量是本文所关注的重点. 加密算法方面,本文采用了基于Arnold变换和骑士巡游变换相结合的复合置乱算法. 在算法软件实现时,本文对系统开销较大的骑士巡游算法进行了改进,找到一种基于映射表的方法,有效地避免了原算法不停查找巡游矩阵,从而大幅降低ARM7内核的系统开销,将处理一帧图像的速度提高了30倍左右. 最后,给出了基于ARM7目标板进行加解密实验的结果分析.
Abstract:
As ARM7 processor has limited capability of processing digital videos,this article has proposed a new way to implement the video encryption and decryption system based on ARM7 processor. The way that can encrypt the important information of video very effectively costs little calculation of processor and prevents the attacks from hackers.This implementation is based on the composite algorithem of Knight-tour transform and Arnold transform which can benefit from each other.As Knight-tour transform costs lots of calculations of CPU,this article has found a good way based on LUT(Look-up table)to reduce costs of calculation. The experiment based on ARM7 target has approved that the speed of processing a frame of vedio has been improved up to 30 times with the way from this article for encryption.

参考文献/References:

[1]邹建成,铁小匀.数字图像的二维Arnold变换及其周期性[J].北方工业大学学报,2000,12(1):10-14.

ZhouJiancheng,TieXiaojun.Arnoldtransformationofdigitalimagewithtwodimensionsanditsperiodicity[J].JournalofNorthChinaUniversityofTechnology,2000,12(1):10-14.(inChinese)
[2]柏森.基于信息隐藏的隐蔽通信技术研究[D].重庆:重庆大学自动化学院,2002.
BaiSen.Areaserchofencryptedcommunicationbasedoninformationhiddentechnology[D].Chongqing:SchoolofAutomation,ChongqingUniversity,2002.(inChinese)
[3]王丽娜.网络多媒体信息安全保密技术[M].武汉:武汉大学出版社,2003.
WangLina.InformationHiddenTechnologyofMultimediafromComputerNetwork[M].Wuhan:WuhanUniversityPress,2003.(inChinese)
[4]丁玮,闫伟齐,齐东旭,等.基于Arnold变换的数字图像置乱技术[J].计算机辅助设计与图形学学报,2001,13(4):338-341.
DingWei,YanWeiqi,QiDongxu,etal.DigitalimageencryptiontechnologybasedonArnoldtransform[J].JournalofComputerAidedDesignandPhotography,2001,13(4):338-341.(inChinese)
[5]齐东旭.分形及其计算机生成[M].北京:科学出版社,1994.
QiDongxu.DivisionofPhotographandComputerAidedGeneration[M].Beijing:SciencePress,1994.(inChinese)
[6]雷仲魁,孙秋燕,宁宣熙.马步哈密顿圈(骑士巡游)在图像置乱加密方法上的应用[J].小型微型计算机系统,2010(5):984-989.
LeiZhongkui,SunQiuyan,NingXuanxi.Imagescramblingalgorithmsbasedonknight-tourtransformanditsapplications[J].JournalofChineseComputerSystems,2010(5):984-989.(inChinese)
[7]柏森,曹长修,曹龙汉,等.基于骑士巡游变换的数字图像细节隐藏技术[J].中国图象图形学报,2001,6(11,A):1096-1100.
BaiSen,CaoChangxiu,CaoLonghan,etal.Digitalimagedetailshidingtechnologybasedonknight-tourtransformation[J].JournalofImageandGraphics,2001,6(11,A):1096-1100.(inChinese)
[8]ParberryI.AnefficientalgorithmfortheKnight’sTourProblem[J].DiscreteAppliedMathematecs,1997(73):251-260.

备注/Memo

备注/Memo:
收稿日期:2014-12-11. 
通讯联系人:袁鹏飞,工程师,研究方向:嵌入式. E-mail:ypfnuaa0401@126.com
更新日期/Last Update: 2015-09-20