Encryption And Decryption of a Message Involving Byte Rotation Technique and Invertible Matrix
Amit Kumar Mandle1, Varsha Namdeo2

1Amit Kumar Mandle, Research Scholar, Department of Computer Applications (MCA) SRK University, Bhopal, India.
2Varsha Namdeo,  Associate Professor, Department of Computer Science Engineering, SRK University, Bhopal, India.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 15, 2019. | Manuscript published on December 30, 2019. | PP: 1160-1163 | Volume-9 Issue-2, December, 2019. | Retrieval Number:  B3393129219/2020©BEIESP | DOI: 10.35940/ijeat.B3393.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The aim of this paper is to introduce a new encryption algorithm involving byte rotation and invertible matrix. In the proposed algorithm firstly we apply byte rotation to get an intermediate cipher and then applying the invertible matrix (modulo 27), which gives the final cipher text. Using secret key matrix along with congruence modulo, the message can be encrypted and decrypted perfectly.
Keywords: Congruence, Byte Rotation Invertible Matrix, Encryption and Decryption.