LightCert: On Designing a Lighter Certificate for Resource-limited Internet of Things Devices

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dc.description학위논문(석사)--아주대학교 일반대학원 :컴퓨터공학과,2018. 8-
dc.description.tableofcontentsChapter 1 Introduction Chapter 2 Related work Chapter 3 Security on the Internet and Requirments for IoT devices 3.1 Certificate-based internet security 3.2 Certificate requirements for IoT devices. 3.3 Scenario 3.4 Threat model Chapter 4 LightCert 4.1 Reduced format 4.2 Certificate registration 4.3 Handshaking 4.4 Certificate exchange 4.4.1 IoT subnet scenario 4.4.2 Out-bound certificates from the IoT Subnet 4.4.3 In-bound certificates to the IoT Subnet Chapter 5 Evaluation 5.1 Certificate sets 5.2 Certificate reduction rate 5.3 Energy consumption & Latency CHAPTER 6 Conclusion-
dc.publisherThe Graduate School, Ajou University-
dc.rights아주대학교 논문은 저작권에 의해 보호받습니다.-
dc.titleLightCert: On Designing a Lighter Certificate for Resource-limited Internet of Things Devices-
dc.contributor.affiliation아주대학교 일반대학원-
dc.contributor.alternativeNameHyukSang Kwon-
dc.contributor.department일반대학원 컴퓨터공학과- 8-
dc.subject.keywordIoT security-
dc.description.alternativeAbstractIoT devices are typically resource-limited in terms of network bandwidth and energy capacities. While, various efforts from the Internet Engineering Task Force (IETF) has designed various IoT-related standards such as 6LoWPAN, RPL and CoAP, integrating certificate-based Internet security protocols to IoT networks is yet a progressing task. We see the main cause of this being the size of the X.509-based Internet certificates. Typically, being 1-2 KBs, the large size of these certificates can cause IEEE 802.15.4-based IoT nodes to fragment the certificate into many smaller packet-size chunks, which causes many packet transmissions to occur in the network. This thesis presents LightCert, a lightweight scheme to compress the size of the security certificates using the similarity of contents in X.509 certificates. Specifically, LightCert identifies common fields in a certificate and suppresses the transmission of these contents within the IoT subnet scope. This allows LightCert nodes to minimize the packet transmission overhead for supporting certificate-based security mechanisms such as DTLS, by as much as ∼37%. The added overhead of exchanging certificates when using LightCert is kept low to as much as ∼5 mJ of energy and ∼0.48 sec of latency.-
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Graduate School of Ajou University > Department of Computer Engineering > 3. Theses(Master)
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