Abstract: The existing data-hiding schemes utilizing the properties of DNA sequences have the disadvantages of expanding the length of the reference DNA and the high modification rate.Aiming at the these roblems,this paper proposes a new DNA hiding scheme based on DNA sequence.It utilizes the complementary rule of nucleotide and designates an injective mapping between the complementary rule and the number of secret bits,and uses the interval of the two changed nucleotides to hide the secret data.The capacity of the proposed scheme is related to the secret data,but the average of the capacity is higher.In the same time,this scheme does not expand the length of the reference DNA sequence,and the modification rate of it is very low.So the proposed scheme allows the receiver to obtain a better quality fake DNA uence.Analysis and experiment result shows that this scheme has higher security compared with substitution method and interpdation method.

Key words: data hiding, injective mapping, data recovery, security analysis, modification rate

摘要： 现有利用DNA序列特殊性质进行数据隐藏的方案,多数存在载体DNA序列长度被改变及修改率较高的缺点。为此,提出一种新的数据隐藏方案。使用核苷酸互补规则及建立在互补规则和秘密比特位数之间的单射关系,利用2个改变的核苷酸间距离比特的位数来表示隐藏的秘密 数据。该方案的容量与所隐藏的秘密数据相关,平均容量较高。安全性分析及实验结果表明,该方案未增加载体DNA长度并且具有较低的修改率,可保证接收者所获得DNA序列的质量。与替代法和插入法相比,安全性较高。

关键词: 数据隐藏, 单射, 数据恢复, 安全分析, 修改率

CLC Number: 

• TP309