Open AccessA Large Block Cipher Using Modular Arithmetic Inverse of a Key Matrix and Mixing of the Key Matrix and the Plaintext
Author(s) -
V. U. K. Sastry,
S. Udaya Kumar,
A. Vinaya Babu
Publication year - 2006
Publication title -
journal of computer sciences/journal of computer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.161
H-Index - 28
eISSN - 1552-6607
pISSN - 1549-3636
DOI - 10.3844/jcssp.2006.698.703
Subject(s) - computer science , key (lock) , block cipher , matrix (chemical analysis) , plaintext , arithmetic , block (permutation group theory) , theoretical computer science , algorithm , cryptography , encryption , mathematics , computer security , materials science , composite material , geometry
In this paper, we have developed a block cipher by applying an iterative method. In the process of encryption, we have used a key matrix (K) in which all the elements are binary bits. In the process of decryption, we have utilized the modular arithmetic inverse (K-1). In the process of encryption, the elements of the plaintext and the elements of the key are thoroughly mixed so that the strength of the algorithm increases remarkably. In this we have obtained the ciphertext for large blocks of plaintext