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Paper 2015/270

Fibonacci Ring Oscillators as True Random Number Generators - A Security Risk

Markus Dichtl

Abstract

Fibonacci ring oscillators are shown to have a risk to oscillate periodically instead of chaotically. The security implications of this are discussed. The probability of the occurrence of the periodic oscillations is determined experimentally on an FPGA for Fibonacci ring oscillators of lengths 16 and 32. Means to overcome the problem of the periodic oscillations are also discussed.

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Publication info
Preprint. MINOR revision.
Keywords
random number generationTRNGring oscillatorFibonacci ring oscillator
Contact author(s)
Markus Dichtl @ siemens com
History
2015-03-23: received
Short URL
https://ia.cr/2015/270
License
Creative Commons Attribution
CC BY
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