基于MD5加密的Tornado码复制算法改进.pdf

文档介绍：第卷第期浙江师范大学学报( 自然科学版) ,
38 1 ( ) Vol. 38 No. 1
2015 年 2 月 Journal of Zhejiang Normal University Nat. Sci. Feb. 2015
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DOI 10. 16218 /j. issn. 1001-5051. 2015. 01. 013
基于 MD5 加密的 Tornado 码复制算法改进
骆正平, 陈中育, 林郁峰, 吴星同
( 浙江师范大学数理与信息工程学院,浙江金华 321004)
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摘要: 基于 Tornado 码的复制算法具有编解码速度比较快、部分数据丢失时亦能被恢复的优点但将该算法
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应用于分布式存储系统时存在数据易被窃取、篡改的风险. 为此对基于 Tornado 码的复制算法提出了改进
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1 引入加密机制使数据即使被窃取时也不用担心泄密 2 对原始数据使用 MD5 算法产生数字指纹当从分
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布式存储系统取回数据时计算数字指纹并与本地的数字指纹对比就可以判断数据是否被篡改.
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关键词: 纠删码 Tornado 码分布式存储数字指纹消息摘要算法
中图分类号: TP309. 2 文献标识码: A 文章编号: 1001-5051( 2015) 01-0078-05
An improved algorithm based on MD5 encryption Tornado code
LUO Zhengping, CHEN Zhongyu, LIN Yufeng, WU Xingtong
( College of Mathematics Physics and Information Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China)
Abstract: Tornado code based replication algorithm had the advantages of faster encoding and decoding,and
could also recover the original data when some data were missing,but when the algorithm was applied to a dis-
tributed storage system,the presence of data would be susceptible to theft,tampering risk. For this reason,
several optimization strategies were proposed to improve the replication algorithm based on Tornado code: 1)
an encryption mechanism into replication algorithm was introduced in case of e