Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1426805

Re: [PATCH 5/7] random: replace non-blocking pool with a Chacha20-based CRNG

Show all headers | View raw

Am Montag, 20. Juni 2016, 11:01:47 schrieb Theodore Ts'o:

Hi Theodore,

> 
> So simply doing chacha20 encryption in a tight loop in the kernel
> might not be a good proxy for what would actually happen in real life
> when someone calls getrandom(2).  (Another good question to ask is
> when someone might be needing to generate millions of 256-bit session
> keys per second, when the D-H setup, even if you were using ECCDH,
> would be largely dominating the time for the connection setup anyway.)

Is speed everything we should care about? What about:

- offloading of crypto operation from the CPU

- potentially additional security features a hardware cipher may provide like 
cache coloring attack resistance?

Ciao
Stephan

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH-v4 0/7] random: replace urandom pool with a CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-13 17:50 +0200
  [PATCH 7/7] random: add backtracking protection to the CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-13 17:50 +0200
  [PATCH 5/7] random: replace non-blocking pool with a Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200
    Re: [PATCH 5/7] random: replace non-blocking pool with a Chacha20-based CRNG Stephan Mueller <smueller@chronox.de> - 2016-06-13 20:10 +0200
      Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-13 21:10 +0200
    Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Herbert Xu <herbert@gondor.apana.org.au> - 2016-06-15 17:00 +0200
      Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-20 01:20 +0200
        Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Herbert Xu <herbert@gondor.apana.org.au> - 2016-06-20 03:30 +0200
          Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-20 07:10 +0200
            Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Herbert Xu <herbert@gondor.apana.org.au> - 2016-06-20 08:10 +0200
              Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-20 17:10 +0200
                Re: [PATCH 5/7] random: replace non-blocking pool with a Chacha20-based CRNG Stephan Mueller <smueller@chronox.de> - 2016-06-20 18:50 +0200
                Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG "H. Peter Anvin" <hpa@zytor.com> - 2016-06-20 22:40 +0200
                Re: [PATCH 5/7] random: replace non-blocking pool with a  Chacha20-based CRNG Theodore Ts'o <tytso@mit.edu> - 2016-06-21 01:50 +0200
  [PATCH 1/7] random: initialize the non-blocking pool via add_hwgenerator_randomness() Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200
  [PATCH 2/7] random: print a warning for the first ten uninitialized random users Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200
  [PATCH 6/7] random: make /dev/urandom scalable for silly userspace programs Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200
  [PATCH 3/7] random: add interrupt callback to VMBus IRQ handler Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200
  [PATCH 4/7] random: properly align get_random_int_hash Theodore Ts'o <tytso@mit.edu> - 2016-06-13 18:00 +0200

csiph-web