This video provides an overview of the fundamental issues of entropy sourcing and random number generation in Linux. The video covers the following topics:

  • The role of entropy in generating random numbers
  • The need for true random numbers in key generation and cryptography
  • Comparison of the two pseudo random number generators in Linux (dev/random and /dev/urandom)
  • The risk of entropy starvation in virtual machines and impact on the quality of random numbers
  • Benefit of adding supplementary entropy sources to generate true random numbers
  • Demonstration of entropy delivery from a remote source using Whitewood’s netRandom product


The video is presented by Richard Moulds, General Manager at Whitewood.

Video duration: 7m 26s

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Whitewood is a subsidiary of Allied Minds Federal Innovations, the division of Allied Minds dedicated to commercializing U.S.federal intellectual property. Allied Minds is an innovative U.S. science and technology development and commercialization company. Operating since 2006, Allied Minds forms, funds, manages and builds products and businesses based on innovative technologies developed at leading U.S. universities and federal research institutions. Allied Minds serves as a diversified holding company that supports its businesses and product development with capital, central management and shared services. More information about the Boston-based company can be found at