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Groups > linux.kernel > #1656953
| From | Jeffrey Walton <noloader@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: get_random_bytes returns bad randomness before seeding is complete |
| Date | 2017-06-04 01:00 +0200 |
| Message-ID | <tOqbw-4Eh-15@gated-at.bofh.it> (permalink) |
| References | (3 earlier) <tO07o-5bS-13@gated-at.bofh.it> <tO4E2-7Qc-13@gated-at.bofh.it> <tO9u1-2Lr-5@gated-at.bofh.it> <tOgvv-723-1@gated-at.bofh.it> <tOp5L-3Sp-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Sat, Jun 3, 2017 at 5:45 PM, Sandy Harris <sandyinchina@gmail.com> wrote: > ... > Of course this will fail on systems with no high-res timer. Are there > still some of those? It might be done in about 1000 times as long on a > system that lacks the realtime library's nanosecond timer but has the > Posix standard microsecond timer, implying a delay time in the > milliseconds. Would that be acceptable in those cases? A significant portion of the use cases should include mobile devices. Device sales outnumbered desktop and server sales several years ago. Many devices are sensor rich. Even the low-end ones come with accelorometers for gaming. A typical one has 3 or 4 sensors, and higher-end ones have 7 or 8 sensors. An Evo 4G has 7 of them. There's no wanting for entropy in many of the use cases. The thing that is lacking seems to be taking advantage of it. Jeff
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get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-02 17:10 +0200
Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-02 18:00 +0200
Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-02 18:50 +0200
Re: [kernel-hardening] Re: get_random_bytes returns bad randomness before seeding is complete Daniel Micay <danielmicay@gmail.com> - 2017-06-02 19:50 +0200
Re: [kernel-hardening] Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-02 19:50 +0200
Re: [kernel-hardening] Re: get_random_bytes returns bad randomness before seeding is complete Kees Cook <keescook@chromium.org> - 2017-06-02 21:00 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Theodore Ts'o <tytso@mit.edu> - 2017-06-02 19:30 +0200
Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-02 19:50 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Theodore Ts'o <tytso@mit.edu> - 2017-06-02 21:10 +0200
Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 02:00 +0200
Re: [kernel-hardening] Re: get_random_bytes returns bad randomness before seeding is complete Sandy Harris <sandyinchina@gmail.com> - 2017-06-03 02:30 +0200
[PATCH RFC 2/3] random: add get_random_{bytes,u32,u64,int,long}_wait family "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 04:40 +0200
[PATCH RFC 0/3] get_random_bytes seed blocking "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 04:40 +0200
[PATCH RFC 1/3] random: add synchronous API for the urandom pool "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 04:40 +0200
[PATCH RFC 3/3] random: warn when kernel uses unseeded randomness "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 04:40 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Theodore Ts'o <tytso@mit.edu> - 2017-06-03 07:10 +0200
Re: get_random_bytes returns bad randomness before seeding is complete "Jason A. Donenfeld" <Jason@zx2c4.com> - 2017-06-03 14:40 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Sandy Harris <sandyinchina@gmail.com> - 2017-06-03 23:50 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Jeffrey Walton <noloader@gmail.com> - 2017-06-04 01:00 +0200
Re: [kernel-hardening] Re: get_random_bytes returns bad randomness before seeding is complete Daniel Micay <danielmicay@gmail.com> - 2017-06-04 02:00 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Stephan Müller <smueller@chronox.de> - 2017-06-04 08:00 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Stephan Müller <smueller@chronox.de> - 2017-06-04 07:50 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Jeffrey Walton <noloader@gmail.com> - 2017-06-04 08:00 +0200
Re: get_random_bytes returns bad randomness before seeding is complete Stephan Müller <smueller@chronox.de> - 2017-06-04 08:30 +0200
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