Re: [dsfjdssdfsd] Risks of entropy available

2018-04-16 Thread Dan Brown
Hi again random readers, Just adding some credit and historical background to this thread . The issue of keyboard timing leakage had already been raised long before: http://archive.cert.uni-stuttgart.de/bugtraq/2003/08/msg00213.html where /dev/random blocking (instead of entropy available in this t

Re: [dsfjdssdfsd] Risks of entropy available

2018-01-11 Thread Theodore Ts'o
On Thu, Jan 11, 2018 at 08:19:30PM +, Dan Brown wrote: > > If an adversary gains access to this interface, then there is a > small risk that sensitive information leaks to the adversary, > because the entropy estimate may be derived from and correlated to > sensitive information. I'll note th

Re: [dsfjdssdfsd] Risks of entropy available

2018-01-11 Thread Dan Brown
Hi random readers, The threat model of Spectre https://en.wikipedia.org/wiki/Spectre_(security_vulnerability) is an adversarial process running on a target's machine. In the mail below, I describe a similar threat model (on OSes with a RNG whose entropy estimate is accessible by any user), but I