| 高航,程仁洪,高铁杠.一种可验证的基于超混沌系统的灰度图像多密钥共享算法[J].光电子激光,2016,27(4):413~420 |
| 一种可验证的基于超混沌系统的灰度图像多密钥共享算法 |
| Verifiable multi-secret sharing scheme based on hyper-chaotic system for grey i mage |
| 投稿时间：2015-11-05 |
| DOI： |
| 中文关键词: 密钥共享 超混沌系统 无损恢复 随机网格(RG) |
| 英文关键词:secret sharing hyper-chaotic system lossless restoration random grid (RG) |
| 基金项目:天津市科技发展计划重点(11JCZDJC16000)资助项目 (南开大学 软件学院 天津 300071) |
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| 中文摘要: |
| 提出一种可验证的图像多密钥共享方案。算法中, 灰度图像首先被置乱,而后划分为 多个图像子块,利用图像子块的哈希值作为超混沌系统的初始值,生成多个随机网格(RG), 最后利用RG和图像子块的异或生成共享的多个子密钥。提出的算法具有共享密钥空间小、 能够无损恢复秘密图像,同时能够验证密钥的持有者是否对密钥进行了恶意篡改,能应用于 重要领域如 医学以及军事图像的保护。实验结果和对算法的比较分析,验证了算法的有效性。 |
| 英文摘要: |
| A novel verifiable multi-secret sharing scheme for grey image is prop osed in this paper.In the scheme,the grey image is firstly shuffled,then the shuffled image is divided into multiple image blocks,and the hash of every image block is converted into the initial value of the hyper-chaotic system,thus Runge-Kutta iteration algorithm is used for hyper-chaos to generate random gri d for each image block.Lastly, the generated random grid and image block are operated with XOR operation,and t he result is merged with hash value to get the final sharing secret.The proposed scheme has the advantage of small space of sharing secret and has the ability of restoring the original without any loss of pixel.In the meantime,it can also verify whether the holder of the secret has tampered the secret.All of the above characteristics make it suitable for some important fields such as the pr otection of military and medical image.Experimental results and sufficient analysis are given to verify the effectiveness of the pro posed method. |
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