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In this paper techniques for the polymorphic implementation of Rijndael algorithm on microcontrollers and smart-cards have been developed. The analysis of algorithm's characteristics and basic cipher operations with respect to the requirement of their polymorphic implementation is performed. It has been shown that polymorphic implementation of operations is bounded only to two consecutive iterations...
User authentication procedures are a computer system's first line of defense against malicious attacks that could potentially jeopardize its availability and reliability. Computational complexity considerations may prevent system designers from implementing efficient authentication procedures. This paper presents a robust two level authentication procedure is presented that is highly efficient and...
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