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- Boyan Valtchanov, Alain Aubert, Florent Bernard, Viktor Fischer
- DDECS
- 2008

— Random number generators represent one of basic cryptographic primitives used to compose cryptographic protocols. While Field Programmable Gate Arrays (FPGAs) are well suited for implementing algorithmic random number generators (pseudo-random number generators), generating fast and secured true random bitstreams inside FPGAs is an open problem. Most of… (More)

- Nathalie Bochard, Florent Bernard, Viktor Fischer, Boyan Valtchanov
- Int. J. Reconfig. Comp.
- 2010

—The paper deals with true random number generators employing oscillator rings and namely with the one proposed by Sunar et al. in 2007 and enhanced by Wold and Tan in 2009. Our mathematical analysis shows that both architectures behave identically when composed of the same number of rings and ideal logic components. However, the reduction of the number of… (More)

- Boyan Valtchanov, Viktor Fischer, Alain Aubert, Florent Bernard
- DDECS
- 2010

- Boyan Valtchanov
- 2010

The paper presents a method, which can be employed to measure the timing jitter present in periodic clock signals that are used as entropy source in true random number generators aimed at cryptographic applications in recon-figurable hardware. The method uses the principle of a coherent sampling and can be easily implemented inside the chip in order to test… (More)

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