On Friday 09 January 2009 02:30:56 Harvey Harrison wrote: > On Thu, 2009-01-08 at 17:28 -0800, Harvey Harrison wrote: > > On Fri, 2009-01-09 at 02:11 +0100, Michael Buesch wrote: > > > I was doing some random tests on the b43 hardware RNG. > > > These are the results. > > > > > > I patched the firmware to not access the RNG register anymore. > > > The unpatched firmware does two things. It reads the RNG register to get random values > > > and it writes 0 to the register every now and then for whatever reason. > > > Both reads and writes were patched out during my test. So the driver was > > > the only one accessing the RNG. > > > > > > This is the result of reading a few bytes from the RNG with the patched fw: > > > > > I'm not sure about this. There aren't any obvious patterns. > > > But maybe I'm just blind. Does somebody else see some pattern or > > > has some RNG test program to recognize such patterns? > > > > > > So let's do another test. Let's modify the previous test to > > > write 0xFFFF instead of 0: > > > > > > > NIST has a pretty good test suite I think. > > Packaged for debian as dieharder if you want the command-line version. Thanks. I didn't know it was already packaged. So I'll certainly try it. -- Greetings, Michael. -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
