Messages in this thread | | | From | Stephan Mueller <> | Subject | Re: [PATCH] random: add random_initialized command line param | Date | Tue, 23 Jun 2015 23:47:33 +0200 |
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Am Dienstag, 23. Juni 2015, 22:44:11 schrieb Pavel Machek:
Hi Pavel,
> On Mon 2015-05-18 18:25:25, Stephan Mueller wrote: > > Make the threshold at which the output entropy pools are considered to > > be initialized configurable via a kernel command line option. The > > current integer value of 128 bits is a good default value. However, some > > user groups may want to use different values. For example, the SOGIS > > group now requires 125 bits at least (BSI, the participant at that group > > used to require 100 bits). NIST moved from 80 bits to 112 bits starting > > with 2014. > > > > It is therefore to be expected that in the future, this threshold may > > increase for different user groups. > > Speaking of random and kernel parameters... should we add random=<hex > digits> parameter to pass entropy from bootloader to the kernel?
Everybody can see that string. How do you think that way of providing entropy is protected?
> u-boot-SPL does DRAM calibration, for example, and I guess that may > provide some rather hard to guess values... > > [I initialy misread parameter below as "random_initize=" and thought > it does exactly this...] > Pavel > > > + random_initialized= [KNL] Set the threshold in bits at which the > > + Linux random number generator considers an output > > + entropy pool initialized. > > + Format: <int> (must be >= 112 and <= size of output > > + entropy pool in bits) > > + Default: 128 > > +
-- Ciao Stephan
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