On Mon, Sep 7, 2015 at 2:09 PM, Stephan Mueller <smueller@xxxxxxxxxx> wrote: > Am Montag, 7. September 2015, 15:07:47 schrieb Mike Mestnik: > > Hi Mike, > >>This is just an off the wall guess. Wouldn't such entropy already be >>collected at a lower level, like raw usb traffic? > > The RNG collects data from interrupts (that also covers normal PS/2 mice and > keyboards), block devices and HID (it hooks itself into the input layer). > > So, raw USB traffic is not a source of entropy other than for the interrupts > the base PCI traffic would generate. > > What I am wondering: isn't the USB mouse/keyboard support hooking into the > kernel's input layer? All input devices add randomness, however I think for mouse add_input_randomness() will drop majority of events since they are likely have the same value (well, depends on which direction you are moving the mouse)... -- Dmitry -- 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
