1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

New "Jitter Entropy" RNG Proposed For Linux

Linux Kernel

Published on 09 February 2013 09:59 AM EST
Written by Michael Larabel in Linux Kernel
10 Comments

The Linux kernel RNG implementation for providing random numbers has worked quite well for its years in use. However, a new jitter entropy generator implementation has been proposed that is capable of providing 100 kB/s throughput of randomness.

Among the Linux RNG shortcomings as it stands now is /dev/random suffering from blocking, there is no in-kernel equivalent to /dev/random, random and urandom need to be re-seeded during boot, in virtualized environments there isn't as much entropy due to lack of attached devices, generated keys for full-disk encryption may not have enough entropy in their pools, and parts of the code contain complex processing.

As a result of these RNG shortcomings, Stephan Mueller has proposed a new entropy generator that is based upon CPU timing jitter. By having this entropy generator based on CPU timing jitter, it doesn't maintain any state nor require a seed, is capable of 100 kB/s throughput in a non-blocking manner through a-synchronous generation, should be better for virtualized environments, the main part of the entropy collector is only about 10 lines of code, and statistical test suites pass the output of the collector.

Stephan has published this initial working jitter entropy generator code as a Linux kernel module and separately as a user-space application. Meanwhile, some kernel developers have expressed interest in a random number generator implementation based upon AES, but no code has been pushed forward yet.

Those wanting to examine this jitter entropy generator for Linux can find the code and additional details as part of this kernel mailing list post.

Latest Linux Hardware Reviews
  1. Mini-Box M350: A Simple, Affordable Mini-ITX Case
  2. Overclocking The AMD AM1 Athlon & Sempron APUs
  3. AMD Athlon 5350 / 5150 & Sempron 3850 / 2650
  4. Upgraded Kernel & Mesa Yield A Big Boost For Athlon R3 Graphics
Latest Linux Articles
  1. A Quick Look At GCC 4.9 vs. LLVM Clang 3.5
  2. Are AMD Athlon/Sempron APUs Fast Enough For Steam On Linux?
  3. AMD Athlon's R3 Graphics: RadeonSI Gallium3D vs. Catalyst
  4. GCC 4.9 Compiler Optimization Benchmarks For Faster Binaries
Latest Linux News
  1. Fedora 21 Gets GNOME 3.12, PHP 5.6, Mono 3.4
  2. Fedora Workstation Is Making Me Quite Excited
  3. Maynard: A Lightweight Wayland Desktop
  4. Chromium Browser Going Through Growing Pains In Ubuntu 14.04
  5. KDE 4.13 Is Being Released Today With New Features
  6. Trying Out Radeon R9 290 Graphics On Open-Source
  7. Intel Broadwell GT3 Graphics Have Dual BSD Rings
  8. Early Linux 3.15 Benchmarks Of Intel Core i7 + Radeon
  9. Red Hat Releases Its RHEL 7 Release Candidate
  10. New Features Coming To Xubuntu 14.04 LTS
  11. NVIDIA Officially Releases CUDA 6
  12. Google Releases An AutoFDO Converter For Perf In LLVM
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Change installation destination from home directory
  3. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  4. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  5. Bye bye BSD, Hello Linux: A Sys Admin's Story
  6. New tool for undervolt/overclock AMD K8L and K10 processors
  7. How to enable opengl 3.3 on r9 270?
  8. R290x sound problems