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1 ² In order to obtain more secure and reliable systems, the vast majority of RFID protocols include a Pseudorandom Number Generator (PRNG) in its design. However, the authors often do not specify the PRNG to use and standard solutions exceed the capabilities of low-cost RFID tags. In this paper, we propose two lightweight PRNGs (AKARI-1 and AKARI-2) that(More)
In RFID protocols, random numbers are mainly required to anonymize tag answers in order to guarantee the privacy of the owner of the transponder. Our analysis looks at the feasibility of RFID tags for supporting Cryptographically Secure Pseudorandom Number Generators (CS-PRNG) on their limited chip. Specifically, we study the implementation of the(More)
This work provides a generalization of structural logic optimization methods to general boolean networks. With this generalization, the nodes of the network are no longer restricted to simple gates and can be functions of any size. Within this framework, we present necessary and sufficient conditions to identify all the possible functional expansions of a(More)