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Contributions to the security of mobile agent systems

Abstract : Recently, the distributed computing has witnessed a great evolution due to the use of mobile agent paradigm, endowed with innovative capabilities, instead of the client-server system where the applications are bound to particular nodes in networks. Having captured the interest of researchers and industry, the mobile agents areable to autonomously migrate from one node to another across the network, transferring their code and data, which allows them to efficiently perform computations, gather information and accomplish tasks. However, despite its significant benefits, this paradigm still suffering from some limitations that obstruct its expansion, primarily in the area of security. According to the current efforts to investigate the security of mobile agents, two categories of threats are considered. The first one concerns the attacks carried out on the mobile agent during its travel or stay by malicious hosts or entities, while the second one deals the attacks performed by a malicious mobile agent in order to affect the hosting platform and consume its resources. Thus, it is substantially needed to conceive a complete security infrastructure for mobile agent systems, which includes methodology, techniques and validation. The aim of this thesis is to propose approaches which provide this technology with security features, that meet with its overall structure without compromising its mobility, interoperbility and autonomy capabilities. Our first approach was based on XML serialization and cryptographic primitives, in order to ensure a persistent mobility of agent as well as a secure communication with hosting platforms. In the second approach, we have conceived an alternative to the first approach using binary serialization and Identity-based cryptography. Our third approach was proposed to introduce anonymity aspect to the mobile agent, and provide him with a tracing mechanism to detect intrusions along its trip. The fourth approach was developed in order to restrict the access to the resources of the agent platform, using a well-defined access control policy based on threshold cryptography. At this stage, we find it interesting to experiment the utility of mobile agents with security features in preserving the security of other technologies such as cloud computing. Thus, we have developed an innovative cloud architecture using mobile agents endowed with cryptographic traces for intrusion detection and a revocation protocol based on trust threshold for prevention.
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Hind Idrissi. Contributions to the security of mobile agent systems. Cryptography and Security [cs.CR]. Université de La Rochelle; Université Mohammed V (Rabat), 2016. English. ⟨NNT : 2016LAROS022⟩. ⟨tel-01661378⟩

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