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However, in this approach, sensors are very resource constrained, and common cryptographic techniques to protect private users\u2019 information while traveling in the radio channel cannot be implemented because their computational cost. Thus, new security solutions for those biometric authentication systems in their short-range wireless communications are needed. Therefore, in this paper, we propose a new cryptographic approach addressing this scenario. The proposed solution employs lightweight operations to create a secure symmetric encryption solution. This cipher includes a pseudo-random number generator based, also, on simple computationally low-cost operations in order to create the secret key. In order to preserve and provide good security properties, the key generation and the encryption processes are fed with a chaotic number sequence obtained through the numerical integration of a new four-order hyperchaotic dynamic. An experimental analysis and a performance evaluation are provided in the experimental section, showing the good behavior of the described solution.<\/jats:p>","DOI":"10.3233\/ica-210673","type":"journal-article","created":{"date-parts":[[2022,1,4]],"date-time":"2022-01-04T11:28:59Z","timestamp":1641295739000},"page":"153-173","source":"Crossref","is-referenced-by-count":14,"title":["Lightweight encryption for short-range wireless biometric authentication systems in Industry 4.0"],"prefix":"10.1177","volume":"29","author":[{"given":"Borja","family":"Bordel","sequence":"first","affiliation":[{"name":"Department of Information Systems, Universidad Polit\u00e9cnica de Madrid, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ram\u00f3n","family":"Alcarria","sequence":"additional","affiliation":[{"name":"Department of Geospatial Engineering, Universidad Polit\u00e9cnica de Madrid, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tom\u00e1s","family":"Robles","sequence":"additional","affiliation":[{"name":"Department of Information Systems, Universidad Polit\u00e9cnica de Madrid, Madrid, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","reference":[{"key":"10.3233\/ICA-210673_ref1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.jii.2017.04.005","article-title":"Industry 40: A survey on technologies, applications and open research issues","volume":"6","author":"Lu","year":"2017","journal-title":"Journal of Industrial Information Integration."},{"key":"10.3233\/ICA-210673_ref2","doi-asserted-by":"crossref","first-page":"156","DOI":"10.1016\/j.pmcj.2017.06.011","article-title":"Cyber\u00a0\u2013 physical systems: Extending pervasive sensing from control theory to the Internet of Things","volume":"40","author":"Bordel","year":"2017","journal-title":"Pervasive and mobile computing."},{"issue":"1","key":"10.3233\/ICA-210673_ref3","first-page":"644","article-title":"Industry 40 \u2013 an opportunity to realize sustainable manufacturing and its potential for a circular economy","volume":"3","author":"Blunck","year":"2017","journal-title":"In DIEM: Dubrovnik International Economic Meeting."},{"key":"10.3233\/ICA-210673_ref4","doi-asserted-by":"crossref","unstructured":"Bordel B, Alcarria R, de Rivera DS, Robles T. 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