A Secure Image Encryption Algorithm Based on Hill Cipher System
A Secure Image Encryption Algorithm Based on Hill Cipher System
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DOI：
10.11591/eei.v1i1.226
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发表时间：
2011-12
影响因子：
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通讯作者：
Buletin Teknik Elektro dan Informatika;S. K. Muttoo;D. Aggarwal;Bhavya Ahuja
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作者：
Buletin Teknik Elektro dan Informatika;S. K. Muttoo;D. Aggarwal;Bhavya Ahuja
我们提出了一种基于Hill密码系统的图像加密技术，该技术比Bibhudendra Acharya等人的现有方法提供更好的安全性。通过使用多个自可逆密钥、块置乱和新开发的像素变换来呈现完全置乱的图像内容。希尔密码算法是对称密钥算法中的一种，在加密方面具有若干优点。然而，在该算法中用于加密纯文本的矩阵的逆可能并不总是存在。此外，该算法容易受到已知的纯文本攻击。我们提出的算法的目的是更好地加密的所有类型的图像，即使是均匀的背景，使图像加密方案更安全。
We present a technique of image encryption based on Hill cipher system that provides better security than existing approach of Bibhudendra Acharya et al. by rendering the image content completely scrambled using multiple self-invertible keys, block shuffling and a new developed pel transformation. The Hill cipher algorithm is one of the symmetric key algorithms having several advantages in encryption. However, the inverse of the matrix used for encrypting the plain text in this algorithm may not always exist. Moreover this algorithm is susceptible to known plain text attack. Our proposed algorithm is aimed at better encryption of all types of images even ones with uniform background and makes the image encryption scheme more secure.