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This paper presents the analysis of a gate-level hardware complexity of SHA-1 and SHA-256. There are several kinds of SHA series' analysis on a hardware point of view but their analyses can be relatively measured according to the given equipments and facilities. In this paper, we provide a logical approach on hardware complexity analysis in area and time angle defined by the number of transistors...
In 2007, Chen et al. proposed a RFID authentication protocol for anti-counterfeiting and privacy protection. A feasible security mechanism for anti-counterfeiting and privacy protection was proposed using XOR and random number shifting operations to enhance RFID tags security providing a low cost. However, their authentication protocol has some drawbacks and security problems because they did not...
Okubo et al. proposed a hash-chain based authentication protocol which protects users' location privacy and anonymity with strong forward security. However, Li et al. claimed that the hash-chain calculation must be a burden on low-cost RFID tags and gives back-end servers heavy calculation loads since the numbers for hash computation are required in a hash chaining technique. Thus, the non-group cellular...
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