Implementing a Chaotic Cryptosystem by Performing Parallel Computing on Embedded Systems with Multiprocessors

• Published in: Entropy (Basel, Switzerland) Vol. 21; no. 3; p. 268
• Main Authors: Flores-Vergara, Abraham, Inzunza-González, Everardo, García-Guerrero, Enrique Efren, López-Bonilla, Oscar Roberto, Rodríguez-Orozco, Eduardo, Hernández-Ontiveros, Juan Miguel, Cárdenas-Valdez, José Ricardo, Tlelo-Cuautle, Esteban
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 09.03.2019; MDPI
• Subjects: Algorithms; Chaos theory; chaotic cryptography; Color imagery; Computers; cryptosystem; Data encryption; Data processing; Digital imaging; Efficiency; embedded system; Embedded systems; Generators; Internet of Things; Multiprocessing; parallel computing; Personal computers; PRNG; Programming languages; Pseudorandom; Random numbers; Robustness (mathematics); Security; Smartphones; Tablet computers; Telecommunications systems; Telephones; embedded system; cryptosystem; chaotic cryptography; parallel computing; PRNG
• ISSN: 1099-4300; 1099-4300
• DOI: 10.3390/e21030268

Profiling and parallel computing techniques in a cluster of six embedded systems with multiprocessors are introduced herein to implement a chaotic cryptosystem for digital color images. The proposed encryption method is based on stream encryption using a pseudo-random number generator with high-precision arithmetic and data processing in parallel with collective communication. The profiling and parallel computing techniques allow discovery of the optimal number of processors that are necessary to improve the efficiency of the cryptosystem. That is, the processing speed improves the time for generating chaotic sequences and execution of the encryption algorithm. In addition, the high numerical precision reduces the digital degradation in a chaotic system and increases the security levels of the cryptosystem. The security analysis confirms that the proposed cryptosystem is secure and robust against different attacks that have been widely reported in the literature. Accordingly, we highlight that the proposed encryption method is potentially feasible to be implemented in practical applications, such as modern telecommunication devices employing multiprocessors, e.g., smart phones, tablets, and in any embedded system with multi-core hardware.