ECC加密MPEG4视频的研究和实现

视频图像压缩编码是解决有限的存储空间与越来越丰富的视频信息之间矛盾的需要,同时也是满足节省通信信道带宽和视频实时传输的需要。视频图像信息的安全是为了防止敏感信息轻易地窃取、篡改、非法复制和传播。信息安全主要包括信息加密技术和信息隐藏两部分,本文主要研究视频信息加密技术。椭圆曲线加密系统(ECC)的安全性基于椭圆曲线离散对数问题的难解性。它是迄今为止每比特具有最高安全强度的密码系统。同其它非对称加密体制相比,椭圆曲线密码系统除了安全性高外,还具有计算负载小,密钥尺寸短,占用带宽少等优点,因此,椭圆曲线密码系统被认为是下一代最通用的公钥密码系统。我们采用椭圆曲线加密算法作为纯密码加密技术进行实验,发现纯密码加密技术有较好的效果。

Research and Development on the ECC of Video MPEG4

It is a need of solving the contradiction between the limited memory space and more and more abundant video information that the video image compresses The code,alleviate video communication between channel and communication contradiction between the channel width in recent years and meet need that transmit in real time of video too at the same time. The protection of the image information of the video is for preventing the stealing, distorts, duplicates and spreads illegally easily of sensitive information.The technology of image information includes information encryption and information hiding two parts. The video information encryption is mainly researched in this paper.The security of Elliptic Curve Cryptogrphy (ECC) is based on the difficulty of elliptic curve discrete logarithm. So far, the Elliptic Curve Cryptosystem(ECC)provides the highest strength-per-bit of any cryptosystem know. In addition to its high security ,ECC also has many other merits. Such as less computation overheads shorter key size, considerable bandwidth savings, and so on. All of these merits have made it become the best public-key crytosystem that is suitable for use in the future.An encryption method based on ECC is applied on the MPEG system directly.The encryption method regard the image data file as the general binary scale data file to enerypt.It is satisfactory to encrypt the result.