Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
A temperature-independent PUF with a configurable duty cycle of CMOS ring oscillators
Year:2016
Research Areas
  • Microelectronics,
  • Electronic circuits,
  • Microelectronic design
Information
Abstract
In this work we propose a Ring Oscillator PUF focused on the variability of the duty cycle instead of measuring the output frequency deviations. To achieve this goal, we replace the common ring oscillators, whose outputs are clock signals of 50% duty cycle, for ring oscillators with an asymmetric structure. The asymmetry confers the ability to configure the duty cycle of each individual node. Through the measurement of a relative value, such as the duty cycle, the robustness of the PUF is improved. For example, the output shift due to the temperature variation is decreased from 3% to less than 0,5%. Moreover, the potential input challenges are multiplied by the number of stages of each ring oscillator. Hence, with our design, the number of ring oscillators needed to build a robust PUF is decreased thanks to the addition of multiple and uncorrelated variables but with negligible area overhead.
International
Si
Congress
IEEE International Symposium on Circuits and Systems (ISCAS), 2016
970
Place
Montreal, Canadá
Reviewers
Si
ISBN/ISSN
2379-447X
10.1109/ISCAS.2016.7539093
Start Date
22/05/2016
End Date
25/05/2016
From page
2471
To page
2474
Circuits and Systems (ISCAS), 2016 IEEE International Symposium on
Participants
  • Autor: M. Luisa Lopez Vallejo (UPM)
  • Autor: Javier Agustin Saenz (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Laboratorio de Sistemas Integrados (LSI)
  • Centro o Instituto I+D+i: Centro de I+d+i en Procesado de la Información y Telecomunicaciones
  • Departamento: Ingeniería Electrónica
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