Partial Image Encryption Using Cellular Automata

Authors

  • Marco Tulio Ramírez Universidad Autónoma de San Luis Potosí, CARAO
  • Marcela Mejía Carlos Universidad Autónoma de San Luis Potosí, IICO
  • José Salomé Murguía Ibarra Universidad Autónoma de San Luis Potosí, Facultad de Ciencias
  • Luis Javier Ontañón García Pimentel Universidad Autónoma de San Luis Potosí, CARAO

DOI:

https://doi.org/10.13053/cys-23-4-2929

Keywords:

Partial encryption, digital images, cellular automata

Abstract

In this work is proposed a partial image encryption method based on the synchronization of the cellular automaton rule 90. The security analysis proves that this cryptosystem is resistant to different tests and attacks such as the Chosen/Knownplain image attack and bit-replacement. This algorithm is a variant from another encryption algorithm named ESCA, in this case we modified the ESCA system to a partial encryption version reducing the latency time up to a 50%. This version has two changes a)it only encrypts the three most significant bits, and b) the bits of the secret key are rotated instead of calculating a key for each block of plaintext. These changes allow to reduce the latency time and according to the tests do not compromise the security. This proposal could be a feasible and secure option for real-time applications.

Author Biography

Marco Tulio Ramírez, Universidad Autónoma de San Luis Potosí, CARAO

Professor-ResearcherDepartment of computational systems engineering

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Published

2019-12-29

Issue

Vol. 23 No. 4 (2019): 23-4(2019)

Section

Articles

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