55 messages in org.freebsd.freebsd-currentRe: entropy reseeding is totally broken | From | Sent On | Attachments |
|---|---|---|
| Андрей Чернов | Oct 19, 2000 9:48 pm | |
| Udo Schweigert | Oct 19, 2000 10:57 pm | |
| Андрей Чернов | Oct 19, 2000 11:39 pm | |
| Андрей Чернов | Oct 19, 2000 11:51 pm | |
| Doug Barton | Oct 20, 2000 1:18 am | |
| Андрей Чернов | Oct 20, 2000 9:27 am | |
| Андрей Чернов | Oct 20, 2000 9:43 am | |
| Mark Murray | Oct 20, 2000 10:06 am | |
| Андрей Чернов | Oct 20, 2000 1:13 pm | |
| Warner Losh | Oct 24, 2000 11:15 am | |
| Terry Lambert | Oct 25, 2000 3:35 am | |
| Андрей Чернов | Oct 25, 2000 3:50 am | |
| Mark Murray | Oct 25, 2000 10:37 am | |
| Андрей Чернов | Oct 25, 2000 11:12 am | |
| Wesley Morgan | Oct 25, 2000 2:15 pm | |
| Mark Murray | Oct 25, 2000 3:12 pm | |
| John W. De Boskey | Oct 25, 2000 4:20 pm | |
| Wesley Morgan | Oct 25, 2000 4:50 pm | |
| Mark Murray | Oct 25, 2000 5:01 pm | |
| Doug Barton | Oct 25, 2000 9:28 pm | |
| Ed Hall | Oct 26, 2000 12:30 am | |
| David O'Brien | Oct 26, 2000 12:50 am | |
| Андрей Чернов | Oct 26, 2000 1:47 am | |
| Kris Kennaway | Oct 26, 2000 2:17 am | |
| Kris Kennaway | Oct 26, 2000 2:21 am | |
| Андрей Чернов | Oct 26, 2000 2:54 am | |
| Андрей Чернов | Oct 26, 2000 3:01 am | |
| Rod Taylor | Oct 26, 2000 3:30 am | |
| Андрей Чернов | Oct 26, 2000 3:34 am | |
| Jordan Hubbard | Oct 26, 2000 5:20 am | |
| John W. De Boskey | Oct 26, 2000 6:24 am | |
| Matt Dillon | Oct 26, 2000 9:55 am | |
| Mark Murray | Oct 26, 2000 10:06 am | |
| Mark Murray | Oct 26, 2000 10:17 am | |
| John Baldwin | Oct 26, 2000 11:06 am | |
| Андрей Чернов | Oct 26, 2000 11:36 am | |
| Terry Lambert | Oct 26, 2000 12:04 pm | |
| Mark Murray | Oct 26, 2000 12:39 pm | |
| Doug Barton | Oct 26, 2000 12:49 pm | |
| David O'Brien | Oct 26, 2000 1:26 pm | |
| Mark Murray | Oct 26, 2000 1:29 pm | |
| Matt Dillon | Oct 26, 2000 1:47 pm | |
| Mark Murray | Oct 26, 2000 2:02 pm | |
| Ed Hall | Oct 26, 2000 2:03 pm | |
| Matt Dillon | Oct 26, 2000 2:25 pm | |
| Doug Barton | Oct 26, 2000 2:44 pm | |
| Poul-Henning Kamp | Oct 26, 2000 2:51 pm | |
| Wesley Morgan | Oct 26, 2000 3:07 pm | |
| David O'Brien | Oct 26, 2000 3:15 pm | |
| Poul-Henning Kamp | Oct 26, 2000 3:18 pm | |
| Jim Bryant | Oct 26, 2000 3:29 pm | |
| Mark Murray | Oct 26, 2000 3:56 pm | |
| Doug Barton | Oct 26, 2000 9:00 pm | |
| Terry Lambert | Oct 27, 2000 5:19 pm | |
| Doug Barton | Oct 27, 2000 7:18 pm |
| Subject: | Re: entropy reseeding is totally broken | |
|---|---|---|
| From: | Wesley Morgan (morg...@chemicals.tacorp.com) | |
| Date: | Oct 25, 2000 2:15:36 pm | |
| List: | org.freebsd.freebsd-current | |
I'm not knocking anyone or any code, especially considering this IS -current... BUT... I don't need to read the code to know that I am seeing the same fortunes on first login after reboot more often than I can attribute to random chance. Maybe nanotime is being harvested, but it seems that there is a time lag between system startup and reaching a state of "true pseudo-entropy". Also, every reboot has entropy caching failing to work. I don't know if this is a product of the broken reseeding or what, because the /etc/rc files seem to be fine.
On Wed, 25 Oct 2000, Mark Murray wrote:
2) Reseeding state may not preserve across the boot due to various reasons like panic, etc. Since _time_ is ignored, all other data /etc/rc tries to collect now can be non-random _easily_!
Unless _time_ will be used, /dev/random is plain unusable for production usage.
Andrey, read the code; nanotime is all over the harvested entropy.
M
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