A True Random Number Generator based on quantum-optical noise

  • André de Almeida Ruegger UFMG
  • Geraldo A. Barbosa QuantaSec - Consulting, Projects and Research in Physical Cryptography Ltd
  • Jeroen van de Graaf UFMG
  • Gilberto Medeiros UFMG
  • Julio Cezar de Melo UFMG
  • Roberto Nogueira UFMG
  • Wagner Rodrigues UFMG
  • Fernando Soares UFMG


In this note we report a project to construct a True Random Number Generator based on quantum noise (shot noise of light). It achieves speeds of 1Gb/s and above which is about 3 orders of magnitude faster than the known bit generator Quantis (from IDQuantique). This generator is part of a platform for secure communications called KeyBITS.


C. Bennett, G. Brassard. Quantum cryptography: Public key distribution and coin tossing. In Proceedings of IEEE International Conference on Computers, Systems and Signal Processing, volume 175, page 8. New York, 1984.

V. Scarani, H. Bechmann-Pasquinucci, N. Cerf, M. Dusek, N. Lutkenhaus, M. Peev. The Security of Practical Quantum Key Distribution. http://arxiv.org/abs/0802.4155

C. Fuchs. Distinguishability and Accessible Information in Quantum Theory. http://arxiv.org/abs/quant-ph/9601020.

G. Taylor, G. Cox. Digital randomness. IEEE Spectrum, Vol. 48(9), pgs 32 – 58, September 2011
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RUEGGER, André de Almeida; BARBOSA, Geraldo A.; VAN DE GRAAF, Jeroen; MEDEIROS, Gilberto; MELO, Julio Cezar de; NOGUEIRA, Roberto; RODRIGUES, Wagner; SOARES, Fernando. A True Random Number Generator based on quantum-optical noise. In: SIMPÓSIO BRASILEIRO DE SEGURANÇA DA INFORMAÇÃO E DE SISTEMAS COMPUTACIONAIS (SBSEG), 14. , 2014, Belo Horizonte. Anais [...]. Porto Alegre: Sociedade Brasileira de Computação, 2014 . p. 334-337. DOI: https://doi.org/10.5753/sbseg.2014.20147.

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