On Wed, Mar 26, 2014 at 09:47:31PM -0700, H. Peter Anvin wrote: > On 03/26/2014 06:11 PM, Andy Lutomirski wrote: > > Also, in the /dev/random sense, > > most hardware RNGs have no entropy at all, since they're likely to be > > FIPS-approved DRBGs that don't have a real non-deterministic source. > > Such a device has no business being a Linux hwrng device. We already > have a PRNG (DRBG) in the kernel, the *only* purpose for a hwrng device > is to be an entropy source.
That's also my understanding. The shot noise from a Schottky-diode seems to be quite popular, for example. > TPMs, in particular, should almost certainly be massively derated based > on what little we know about TPM. Backdoors, anyone? :-) Torsten -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/