Secure Hill cipher (SHC) modification based on dynamically changing generalized
permutation matrix, SHC-GPM is proposed. It provides better security than that of SHC due …

The Hill cipher is resistant to brute-force and statistical attacks, but it can be broken with a
known plaintext-ciphertext attack (KPCA). In this paper, we propose a modification of the Hill …

We propose and analyze a new modification of the Hill cipher, HCM-EE, generating dynamic
encryption key matrix by exponentiation that is made efficiently with the help of eigenvalues …

All the proposed Hill cipher modifications have been restricted to the use of dynamic keys
only. In this paper, we propose an extension of Hill cipher modification based on …

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 …

Hill Cipher is one of the methods used in Cryptography. In the Hill Cipher algorithm, the key
square matrix must have an inverse modulo. One special matrix that definitely has an …

The Hill cipher is a famous symmetric cryptosystem that have several advantages in data
encryption. However, the Hill cipher algorithm cannot encrypt images that contain large …

The conventional symmetric Hill cipher encryption algorithm, applied for data encryption,
presents several disadvantages. However, a drawback of the conventional algorithm is …

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 …

Abstract The Hill Cipher algorithm is a practical algorithm which requires only preliminary
knowledge of matrices which makes it quite useful. But, for decrypting the encoded …