Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Vigenere Followed by Multiple Bit-Level Permutations to Encrypt a Color Image

Version 1 : Received: 22 April 2021 / Approved: 26 April 2021 / Online: 26 April 2021 (10:16:05 CEST)

How to cite: Jarjar, A. Vigenere Followed by Multiple Bit-Level Permutations to Encrypt a Color Image. Preprints 2021, 2021040647 (doi: 10.20944/preprints202104.0647.v1). Jarjar, A. Vigenere Followed by Multiple Bit-Level Permutations to Encrypt a Color Image. Preprints 2021, 2021040647 (doi: 10.20944/preprints202104.0647.v1).

Abstract

The largest part of the image encryption algorithms operates on the pixel as a central element by implementing diffusion confusion and eventually a permutation. On the other side, a permutation applied at the bit level changes not only the pixel value, but also its location within the image. In this work, we will propose a new technology of medical and color image encryption, based on chaotic permutations acting at the bit level, and a diffusion confusion ensured by an application of the method of Vigenere largely improved and adapted to the subject. Simulations performed on a large number of images of different sizes and formats ensure that our method is not subject to any known attacks.

Subject Areas

Vigenere grid; Chaotic map; Broadcast function; Chaotic permutation;

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