On the Need for a General REST-Security Framework

Luigi Lo Iacono, Hoai Viet Nguyen and Peter Leo Gorski
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Luigi Lo Iacono: Data and Application Security Group, Cologne University of Applied Sciences, 50679 Cologne, Germany
Hoai Viet Nguyen: Data and Application Security Group, Cologne University of Applied Sciences, 50679 Cologne, Germany
Peter Leo Gorski: Data and Application Security Group, Cologne University of Applied Sciences, 50679 Cologne, Germany

Future Internet, 2019, vol. 11, issue 3, 1-33

Abstract: Contemporary software is inherently distributed. The principles guiding the design of such software have been mainly manifested by the service-oriented architecture (SOA) concept. In a SOA, applications are orchestrated by software services generally operated by distinct entities. Due to the latter fact, service security has been of importance in such systems ever since. A dominant protocol for implementing SOA-based systems is SOAP, which comes with a well-elaborated security framework. As an alternative to SOAP, the architectural style representational state transfer (REST) is gaining traction as a simple, lightweight and flexible guideline for designing distributed service systems that scale at large. This paper starts by introducing the basic constraints representing REST. Based on these foundations, the focus is afterwards drawn on the security needs of REST-based service systems. The limitations of transport-oriented protection means are emphasized and the demand for specific message-oriented safeguards is assessed. The paper then reviews the current activities in respect to REST-security and finds that the available schemes are mostly HTTP-centered and very heterogeneous. More importantly, all of the analyzed schemes contain vulnerabilities. The paper contributes a methodology on how to establish REST-security as a general security framework for protecting REST-based service systems of any kind by consistent and comprehensive protection means. First adoptions of the introduced approach are presented in relation to REST message authentication with instantiations for REST-ful HTTP (web/cloud services) and REST-ful constraint application protocol (CoAP) (internet of things (IoT) services).

Keywords: SOA; services; security; REST; web services security; HTTP; IoT services security; CoAP; RACS (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2019
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