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Poettering: The Biggest Myths

Poettering: The Biggest Myths

Posted Jan 29, 2013 14:10 UTC (Tue) by engla (guest, #47454)
In reply to: Poettering: The Biggest Myths by cb064
Parent article: Poettering: The Biggest Myths

We need to generate a lot of random bytes. It is a good idea to perform some other action (post a news story about systemd, Lennart Poettering, or Ubuntu) during the prime generation; this gives the random number generator a better chance to gain enough entropy.


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Poettering: The Biggest Myths

Posted Jan 29, 2013 20:00 UTC (Tue) by Eckhart (guest, #74500) [Link]

> We need to generate a lot of random bytes. It is a good idea to perform some other action (post a news story about systemd, Lennart Poettering, or Ubuntu) during the prime generation; this gives the random number generator a better chance to gain enough entropy.

You just provided another argument against systemd: it ships with its own version of a random number generator, tightly coupled into the init system. Myth 1 demythified!

(The implementation is also pretty bad, there are quite a lot of predictable comments here…)

Poettering: The Biggest Myths

Posted Jan 30, 2013 8:38 UTC (Wed) by micka (subscriber, #38720) [Link]

> (The implementation is also pretty bad, there are quite a lot of predictable comments here…)

... but the one you respond to was probably the least predictable !

Poettering: The Biggest Myths

Posted Jan 29, 2013 22:14 UTC (Tue) by rgmoore (✭ supporter ✭, #75) [Link]

An amusing theory with just one small problem: LWN uses https by default. That means they consume a lot of entropy every time somebody connects to read the latest flames. All the SSL connections from a massive systemd flamewar will actually deplete their entropy pool far faster than the posts will refresh it. Not to mention the absolute foolishness of depending on user-provided information to replenish the entropy pool in the first place...

Poettering: The Biggest Myths

Posted Jan 30, 2013 1:13 UTC (Wed) by Trelane (subscriber, #56877) [Link]

It's not like systemd or gnome3 threads contain any entropy anyway.... ;)

Poettering: The Biggest Myths

Posted Jan 30, 2013 2:28 UTC (Wed) by cb064 (guest, #88059) [Link]

the timing of our network packets might just contain enough of it .. Though the time between requests might correlate with the current length of the thread (at least for individuals reading the comments) .


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