simon-git: putty (master): Simon Tatham

[Commits to Tartarus hosted VCS]

TL;DR:
  132d48b8 Remove redundant #includes from sshutils.c.
  3daa3629 Remove dependency of sshrand.c on SHA-512.
  a0580542 Introduce noproxy.c.
  7003b439 Stop using mp_int in sshprng.c.

Repository:     https://git.tartarus.org/simon/putty.git
On the web:     https://git.tartarus.org/?p=simon/putty.git
Branch updated: master
Committer:      Simon Tatham <anakin at pobox.com>
Date:           2020-09-13 09:16:00

commit 132d48b8f3d3bd619acb8a88dada46b54f4671f0
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=132d48b8f3d3bd619acb8a88dada46b54f4671f0;hp=56132d69c666192976a67b3227e4a6e77663c586
Author: Simon Tatham <anakin at pobox.com>
Date:   Sun Sep 13 08:29:35 2020 +0100

    Remove redundant #includes from sshutils.c.
    
    None of these was necessary at all. I think I must have just pasted
    the existing list of includes when I split this file off from
    sshcommon.c.

 sshutils.c | 3 ---
 1 file changed, 3 deletions(-)

commit 3daa36293ee2709e90578ae2277bf4f5532c63e8
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=3daa36293ee2709e90578ae2277bf4f5532c63e8;hp=132d48b8f3d3bd619acb8a88dada46b54f4671f0
Author: Simon Tatham <anakin at pobox.com>
Date:   Sun Sep 13 08:32:19 2020 +0100

    Remove dependency of sshrand.c on SHA-512.
    
    Rather like some of the tricks I did in mpint.h, this replaces the
    unparametrised function random_setup_special() with one called
    random_setup_custom() taking a hash-algorithm parameter.
    
    The old syntax random_setup_special() still exists, and is a macro
    wrapper on random_setup_custom() that passes ssh_sha512 as an
    argument. This means I can keep the choice of hash function consistent
    between the key generation front ends.
    
    This adds potential flexibility: now, anyone wanting a different kind
    of special RNG can make it out of whatever primitive they like. But a
    more immediate point is to remove an inter-module dependency:
    sshrand.c now doesn't need to be linked against the SHA-512 code.

 putty.h   | 11 ++++++++---
 sshrand.c |  6 +++---
 2 files changed, 11 insertions(+), 6 deletions(-)

commit a05805425355615c105bfb322fa94358d3ae2cc3
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=a05805425355615c105bfb322fa94358d3ae2cc3;hp=3daa36293ee2709e90578ae2277bf4f5532c63e8
Author: Simon Tatham <anakin at pobox.com>
Date:   Sun Sep 13 08:39:17 2020 +0100

    Introduce noproxy.c.
    
    For use in spinoff programs: this is an alternative to proxy.c, which
    provides the same API (to avoid link failures in modules like
    x11fwd.c) but implements it in the trivial way, supporting no proxying
    at all and just wrapping the underlying sk_new() and friends.

 noproxy.c | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

commit 7003b43963aef6cdf2841c2a882a684025f1d806
web diff https://git.tartarus.org/?p=simon/putty.git;a=commitdiff;h=7003b43963aef6cdf2841c2a882a684025f1d806;hp=a05805425355615c105bfb322fa94358d3ae2cc3
Author: Simon Tatham <anakin at pobox.com>
Date:   Sun Sep 13 08:42:54 2020 +0100

    Stop using mp_int in sshprng.c.
    
    We keep an internal 128-bit counter that's used as part of the hash
    preimages. There's no real need to import all the mp_int machinery in
    order to implement that: we can do it by hand using a small fixed-size
    array and a trivial use of BignumADC. This is another inter-module
    dependency that's easy to remove and useful to spinoff programs.
    
    This changes the hash preimage calculation in the PRNG, because we're
    now formatting our 128-bit integer in the fixed-length representation
    of 16 little-endian bytes instead of as an SSH-2 mpint. This is
    harmless (perhaps even mildly beneficial, due to the length now not
    depending on how long the PRNG has been running), but means I have to
    update the PRNG tests as well.

 sshprng.c          | 16 +++++++++-------
 test/cryptsuite.py | 12 +++++++++---
 2 files changed, 18 insertions(+), 10 deletions(-)