*countable infinities only

[Jon Ciesla]

On Thu, May 31, 2012 at 12:52 PM, Gerry Reno <greno at verizon.net> wrote:
> On 05/31/2012 01:48 PM, Jon Ciesla wrote:
>> On Thu, May 31, 2012 at 12:42 PM, Gerry Reno <greno at verizon.net> wrote:
>>> On 05/31/2012 01:34 PM, Jon Ciesla wrote:
>>>> On Thu, May 31, 2012 at 12:22 PM, Gerry Reno <greno at verizon.net> wrote:
>>>>> On 05/31/2012 01:19 PM, Jon Ciesla wrote:
>>>>>> On Thu, May 31, 2012 at 12:16 PM, Gerry Reno <greno at verizon.net> wrote:
>>>>>>> On 05/31/2012 01:10 PM, Gregory Maxwell wrote:
>>>>>>>> On Thu, May 31, 2012 at 1:07 PM, Gerry Reno <greno at verizon.net> wrote:
>>>>>>>>> Could be any of a thousand ways to implement this.
>>>>>>>>> Maybe it checks the BIOS to determine whether some SecureBoot flag is set.
>>>>>>>> While it pains me to argue with someone on my side— you're incorrect.
>>>>>>>> The compromised system would just intercept and emulate or patch out that test.
>>>>>>> Then what's missing here is a way for booted OS's to test themselves for integrity.
>>>>>> Maybe some sort of cryptographic signature stored in the hardware?
>>>>>>
>>>>>> <ducks>
>>>>>>
>>>>>> -J
>>>>>>
>>>>>> </sarcasm>
>>>>>>
>>>>> Just not dictated by one monopoly.
>>>> Ideally, no.  But you see the problem.  I'm divided on the solution
>>>> myself, but I've yet to see one I feel better about.
>>>>
>>>> -J
>>>>
>>>>
>>> This game of cat and mouse with the blackhats is not going to end until we have some type of read-only partitions where
>>> known good code resides.
>> We have that, ISO9660.  Known good == known good to whom?
>>
>>
> Nah, can't be iso.
>
> Has to be HDD partitions whose ro/rw state is controlled by hardware.

Which brings us back to the issue of how the hardware knows what to
trust for that ro/rw state.

-J

>
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