Re: TPMs and random numbers

2013-09-11 Thread David Safford
On Wed, 2013-09-11 at 10:49 -0700, Andy Lutomirski wrote: > On Wed, Sep 11, 2013 at 10:22 AM, David Safford wrote: > >>On 09/09/2013 02:11 PM, H. Peter Anvin wrote: > > A TPM that has an excellent internal entropy source and is FIPS 140-2 > compliant with no bugs wha

Re: TPMs and random numbers

2013-09-11 Thread David Safford
>On 09/09/2013 02:11 PM, H. Peter Anvin wrote: >> It recently came to my attention that there are no standards whatsoever >> for random number generated by TPMs. In fact, there *are* TPMs where >> random numbers are generated by an encrypted nonvolatile counter (I do >> not know which ones); this

Re: AppArmor FAQ

2007-04-17 Thread David Safford
On Mon, 2007-04-16 at 20:20 -0400, James Morris wrote: > On Mon, 16 Apr 2007, John Johansen wrote: > > > Label-based security (exemplified by SELinux, and its predecessors in > > MLS systems) attaches security policy to the data. As the data flows > > through the system, the label sticks to the da

Re: [Patch 3/7] integrity: EVM as an integrity service provider

2007-03-27 Thread David Safford
On Thu, 2007-03-22 at 23:19 +, Pavel Machek wrote: > > There are some papers and related userspace code at > >http://www.research.ibm.com/gsal/tcpa > > which describe the architecture in more detail, but basically this > > integrity provider is designed to complement mandatory access contr

Re: [Patch 3/7] integrity: EVM as an integrity service provider

2007-03-26 Thread David Safford
On Sun, 2007-03-25 at 12:13 +, Pavel Machek wrote: > > > + The Extended Verification Module is an integrity provider. > > > + An extensible set of extended attributes, as defined in > > > + /etc/evm.conf, are HMAC protected against modification > > > + using the TPM's KERNEL ROOT KEY, i