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The integration of lightweight symmetric encryption is becoming increasingly widespread in very low-power Internet of Things applications, with the rapid emergence of very low energy block and stream ciphers in portable and wireless systems. Trivium is one of the lightweight stream ciphers shortlisted for the hardware profile of the eSTREAM project. This paper describes low-power multiradix Trivium...
The security of cryptocircuits is today threatened not only by attacks on algorithms but also, and above all, by attacks on the circuit implementations themselves. These are known as side channel attacks. One variety is the Active Fault Analysis attack, that can make a circuit vulnerable by changing its behavior in a certain way. This article presents an experimental fault insertion attack on an FPGA...
This article presents the development of an experimental system to introduce faults in Trivium stream ciphers implemented on FPGA. The developed system has made possible to analyze the vulnerability of these implementations against fault attacks. The developed system consists of a mechanism that injects small pulses in the clock signal, and elements that analyze if a fault has been introduced, the...
Modular multiplication is the key operation in systems based on public key encryption, both for RSA and elliptic curve (ECC) systems. High performance hardware implementations of RSA and ECC systems use the Montgomery algorithm for modular multiplication, since it allows results to be obtained without performing the division operation. The aim of this article is to explore various modified structures...
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