Am Freitag, 30. Mai 2014, 17:05:48 schrieb Herbert Xu: Hi Herbert, > On Mon, May 26, 2014 at 07:42:57AM +0200, Stephan Mueller wrote: > > A second aspect is the implementation of the stdrng. Currently, the > > offered > > patch does not include the stdrng selection. I am currently working on the > > completion of the addition of the stdrng selection to the offered patch. > > My > > idea is the following: currently, all DRBG types are registered with their > > own cra_name. However, there shall be one particular DRBG registered > > twice. When registering the instance again, the cra_name shall be > > "stdrng". In addition, if the kernel command line contains fips=1, the > > cra_priority of that stdrng should be set to 300. That implies that when > > the kernel resolves the stdrng, it resolves to get_random_bytes in normal > > mode, but to the stdrng DRBG in FIPS mode. > > Just have all of them register as stdrng with differing priorities. Will do. Just to clarify: I would use priorities below 200 if (!fips_enabled) and above 200 for fips_enabled. This would mean that per default, the get_random_bytes/krng has the highest priority in non-fips mode. In FIPS mode, the DRBGs would have the higher priority per default. > We already have a user-space interface to change priorities. Great -- if I may ask, which interface is that? > > Cheers, Ciao Stephan -- | Cui bono? | -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
