Adaptation of spectral encryption to the Advanced Encryption Standard paradigm

• Grant number: 19/14858-3
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2020
• End date: January 31, 2021
• Field of knowledge: Engineering - Electrical Engineering - Telecommunications
• Principal Investigator: Marcelo Luís Francisco Abbade
• Grantee: Welerson Santos Souza
• Host Institution: Universidade Estadual Paulista (UNESP). Campus Experimental São João da Boa Vista. São João da Boa Vista , SP, Brazil

Abstract

Data encryption processes bits to provide confidentiality in the higher layers of the Open System for Interconnections (OSI) reference model. Among the most commonly used commercial strategies for data encryption is the Advanced Encryption Standard (AES), a secure standard that meets the diffusion and confusion properties established by Shannon. These properties must be met in secure encryption techniques. On the other hand, the signal encryption is a promising topic of research that may be complementary to the data encryption. This type of encryption acts on the signals that will be transmitted by the physical layer of the OSI model. The goal of this project is to develop and evaluate a new encryption technique in the physical layer. This technique divides the input signal into spectral slices and performs operations analogous to AES with Digital Signal Processing (DSP). The spectral slices are analogous to the AES encrypted bytes and will undergo repetitive spectral phase and delay encoding (SPDE) operations, substitution and permutation to provide confusion and diffusion characteristics to the encrypted signal. The cryptographic keys of the technique are the sets of phases and delays used in each round of encryption. The performance of the new technique, SPDE-SPN (SPDE with substitution and permutation network), will be evaluated by computational simulations. For these evaluations, the propagation of encrypted signals by (i) a channel with additive white Gaussian noise (AWGN) and non-linearities and (ii) by optical networks will be simulated. The technique is expected to provide similar or superior security results to AES, with the benefits of cryptography at the physical layer. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FRANCISCO ABBADE, MARCELO LUIS; PARETO JUNIOR, PEDRO PAULO; LAGE RODRIGUES, IVAN EDUARDO; SOUZA, WELERSON SANTOS; BONANI, LUIZ HENRIQUE; ALDAYA, IVAN; IEEE. Security in Optical Communication Systems: Data Encryption and Beyond. 2021 SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE (SBFOTON IOPC), v. N/A, p. 6-pg., 2021-01-01. (19/02720-7, 19/14858-3)

SOUZA, WELERSON SANTOS; NOGUEIRA, MARCELO PEREIRA; LAGE RODRIGUES, IVAN EDUARDO; SANTOS, MELISSA DE OLIVEIRA; BONANI, LUIZ HENRIQUE; ALDAYA, IVAN; FRANCISCO ABBADE, MARCELO LUIS; IEEE. Spectral Shuffling with Phase Encoding and Dynamic Keys Applied to Transparent Optical Network Signals. 2020 22ND INTERNATIONAL CONFERENCE ON TRANSPARENT OPTICAL NETWORKS (ICTON 2020), v. N/A, p. 4-pg., 2020-01-01. (19/02720-7, 19/14858-3)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SOUZA, Welerson Santos. Adaptation of spectral cryptography to the paradigm of Advanced Encryption Standard. 2021. Master's Dissertation - Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. São João da Boa Vista São João da Boa Vista.