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LINUX RANDOM NUMBER
GENERATOR
2016/3/28
Linux Random Number
Generator
Entropy Source
Entropy Pool (random.c)
input_pool
nonblocking_pool blocking_pool
add_input_r...
Reference
 Ensuring Randomness with Linux's Random
Number Generator
 https://blog.cloudflare.com/ensuring-
randomness-wi...
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Slideshare - Linux Random Number Generator

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Linux Random Number Generator framework

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Slideshare - Linux Random Number Generator

  1. 1. LINUX RANDOM NUMBER GENERATOR 2016/3/28
  2. 2. Linux Random Number Generator Entropy Source Entropy Pool (random.c) input_pool nonblocking_pool blocking_pool add_input_randomness() add_hwgenerator_randomness() add_timer_randomness() add_device_randomness() /dev/random/dev/urandom Interrupt Requests Human Input Device I/O HW RNG (hw_random.c) Application Read Read 3rd party entropy generator Daemon (like rngd, haveged) Write Write User space Kernel space Get
  3. 3. Reference  Ensuring Randomness with Linux's Random Number Generator  https://blog.cloudflare.com/ensuring- randomness-with-linuxs-random-number- generator/  The Linux Random Number Generator  https://pthree.org/2014/07/21/the-linux-random- number-generator/

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