Cryptography is a security mechanism which caters the security services of world in perfect manner. In this paper, the author has studied and performed the experimental analysis of modified hill cipher to perform encryption and decryption for invertible and noninvertible matrices.Pooja SharmaTarun Dalal...
Hill Cipher DecryptionTo decrypt the message, we turn the ciphertext back into a plain text, then simply multiply by the inverse matrix of the key matrix as "IFKVIVVMI" in letters. The inverse of the matrix used in the encryption is,...
Combined with an example, using mathematical knowledge and Matlablanguage, it explains how to find the Hill cipher encryption matrix and decryption matrix, so as to achieve the fast encryption and decryptionof Hill cipher.关键词院 Hill 密码;加密解密矩阵;模逆;MatlabKey words: Hill cipher;encryption...
Abstract:This paper devotes to construct Hill cipher by using partial differential equations (PDEs).Encryption and decryption models based on the first-order hyperbolic equation with mixed boundary conditions are proposed.Matrix functions according to the difference schemes are Designed.The improved Hill ...
encyption and decryption of image using hill... Learn more about hill cipher, arnold transform, cat map, image processing, arnold's cat map Image Processing Toolbox
The main objective of proposed algorithm is to encrypt an image using a technique different from the traditional Hill Cipher. In this paper a Modified Hill encryption and decryption technique has been proposed which uses an involuntary key matrix. The scheme is a fast encryption scheme which ...
This paper devotes to construct Hill cipher by using partial differential equations (PDEs).Encryption and decryption models based on the first-order hyperbolic equation with mixed boundary conditions are proposed.Matrix functions according to the difference schemes are Designed.The improved Hill cipher ...
Combined with an example,using mathematical knowledge and Matlab language,it explains how to find the Hill cipher encryption matrix and decryption matrix,so as to achieve the fast encryption and decryption of Hill cipher. 关键词:Hill密码;加密解密矩阵;模逆;Matlab Key words:Hill cipher;encryption ...
Step 1: Creation and Population of matrix This technique uses a5 x 5 matrixwhich stores a keyword (or phrase) that becomes the key for encryption or decryption. This involves some set of fixed rule, those are: Fill the keyword in the matrix row-wise from left to right, top to...
which will be the cipher's key. Text is divided into blocks of size n, and each block forms a vector of size n. Each vector is multiplied by the key matrix of n x n. The result, vector of size n, is a block of encrypted text. Modular arithmetic is used; that is, all operation...