Algebra Based Encryption and Decryption Algorithms

Shakeel Ahmed Kamboh, Suhail Aslam Khaskheli, Abbas Ali Ghoto, Sunny Kumar Aassori, Muzaffar Bashir Arain


In this study an encryption/decryption algorithm is proposed and developed. The developed algorithm is based on the idea that any given plain text can be encrypted like a block cipher with a combination of three encryption keys k1, K2, ...KN that use any value between N = 1, 2, 3, n, . Then the cipher values can be used to make the blocks of alphabets containing only A, B, C, D, E, F, G, H, I, J, each block is separated by a space. The steps of algorithm could also be reversible for decryption of the cipher text. A MATLAB code is written to implement the algorithm and tested different input messages.Secret message consists of website
link and bank account details. The specialty of the algorithm is that it can be flexibly used to encrypt and decrypt the secret messages containing not only English alphabets but also those messages containing the numbers, punctuations, elementary mathematics operations and the special characters. The performance of the algorithm is evaluated in terms of computational time, memory usage. From the analysis it is found that the proposed algorithm is faster in terms of execution time as compared to the modern algorithm which makes the algorithm computationally
secure. The proposed research particularly contributes as the addition of knowledge in the field of cryptography and generally to the information security; consequently can be beneficial to the society.

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