The Hill cipher algorithm is one of the symmetrickey algorithms that have several advantages in data encryption as well as decryptions. But, the inverse of the key matrix used for encrypting the plaintext does not always exist. Then if the key matrix is not invertible, then encrypted text ...
Hill Cipher is one of the classic symmetric encryption algorithms widely used in cloud data security. Although the hill cipher principle is relatively simple, its key matrix must be invertible, and all elements must be integers. However, the inverses of randomly generated matrix does not always ex...
Hill Cipher EncryptionWe have to do encryption on the message 'ACT' (n=3). The key is 'GYBNQKURP' which can be written as the n x n matrix that is 3 x 3 matrix,The message for encryption 'ACT' is written as a vector,The enciphered vector is given as,...
Abstract: This paper introduces the idea of Hill encryption algorithm, encryption and decryption process of Hill cipher, modularalgebra knowledge in the process of encryption and decryption. Combined with an example, using mathematical knowledge and Matlablanguage, it explains how to find the Hill ...
The Hill cipher algorithm is one of the symmetric key algorithms that have several advantages in data encryption. However, a main drawback of this algorithm is that it encrypts identical plaintext blocks to identical ciphertext blocks and cannot encrypt images that contain large areas of a single...
This repository contains a Python implementation of the Hill Cipher encryption algorithm using the NumPy library. The Hill Cipher is a polygraphic substitution cipher that encrypts messages by dividing them into blocks and then performing mathematical op
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 ...
EncryptionDecryptionSelf-invertible matrixIn this paper, methods of generating self-invertible matrix for Hill Cipher algorithm have been proposed. The inverse of the matrix used for encrypting the plaintext does not always exist. So, if the matrix is not invertible, the encrypted text cannot be ...
Abstract:This paper introduces the idea of Hill encryption algorithm,encryption and decryption process of Hill cipher,modular algebra knowledge in the process of encryption and decryption. Combined with an example,using mathematical knowledge and Matlab language,it explains how to find the Hill cipher ...
The Hill cipher is a symmetric encryption algorithm vulnerable to the attack of knownplaintext. This paper proposes a modification to the Hill cipher. In the proposed cryptosystem, a prime circulant matrix is shared as a secret key and a non-singular matrix G is used as a public key such ...