项目名称: 可认证及可修复式秘密图像共享技术研究
项目编号: No.61201385
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 电子学与信息系统
项目作者: 王智慧
作者单位: 大连理工大学
项目金额: 24万元
中文摘要: 作为多媒体信息安全领域的研究前沿,秘密图像共享技术提供了一种新的安全使用秘密图像的机制。它利用数学算法将秘密图像转换成多个伪装分存图像分发给多个参与者,当参与者数目大于或等于阈值时重构出秘密图像。秘密图像共享技术具有以下优势:1)多个参与者共同对秘密图像进行管制,增强了秘密图像的安全性;2)无需使用公钥加密技术,降低了算法复杂度。项目组在归纳现有研究成果基础上,凝练出目前研究中存在的一系列函待解决的科学问题:1)在参与者可靠性方面,如何设计既可以认证伪装分存图像的准确性,又可以对遭篡改的伪装分存图像进行修复的秘密图像共享技术;2)在分存图像安全传输方面,如何设计基于问题1)解决方案的分存图像信息隐藏算法。针对上述问题,项目组结合现有研究基础,拟定了切实可行的研究方案。项目的成功实施,有望显著改进秘密图像共享技术的性能,拓展秘密共享技术的应用领域,从而有力提升我国在该前沿领域的研究水平。
中文关键词: 秘密共享;图像处理;信息隐藏;;
英文摘要: As the cutting edge research field of multimedia information security, secret image sharing provides a new way to use the digital image securely. It uses the mathematical algorithms to transfer the secret image into many shares, and then sends them to all participants. If the number of the cooperated participants not smaller than a predefined threshold, they can extract the secret image correctly. There are two advantages of secrect image sharing technique in general. The first one is the secret image can be controlled by multi participants other than only one, which inhances the security of the secret image. The second one is there is no need of adopting public key algorithms in secret image sharing, which means the lower computation cost.Based on the thoroughly study of secret image sharing's development, we found that the following problems are still need to be solved: 1) If there are cheaters among participants, how to design a new secret image sharing scheme, which should have both stego-share authentication function and stego-share restoration function.2) As to the phase of sending the shares to the participants securely,how to design a new image information hiding scheme under the condition of satisfying the new requirements generated by solving the problem 1). In this proposal, we make a feasible plan t
英文关键词: secret sharing;image processing;information hiding;;