Improved SAFER Plus Algorithm Using the Odd-Squared New Mersenne Number Transform

Abstract

Encryption secures data by transforming it into unreadable information (ciphertext) that can only be read by authorized receivers, who then convert the unclear data back into the original plaintext. Encryption can be classified into two types: symmetric and asymmetric. Symmetric encryption utilizes the same key for each of the sender and the receiver whereas two different keys are used in asymmetrical encryption. One of the encryption techniques is the SAFER+ algorithm. In this paper, a generalized type of the new Mersenne number transform (NMNT) called the odd-squared NMNT (O2NMNT) is used to generate a new matrix in the proposed SAFER+ algorithm to replace the basic matrix used in the standard SAFER+ algorithm. The results revel that in the proposed SAFER+ algorithm the number of attempts required to find the key used in the encryption process in extremely higher than the attempts needed in the standard SAFER+ algorithm this gives the suggested algorithm a higher encryption strength than the conventional algorithm.