PuTTY version 0.83 pre-releases are available

[Simon Tatham]

PuTTY version 0.83 pre-releases are available
---------------------------------------------

Hello PuTTY users,

We're gearing up to the 0.83 release of PuTTY. It's not final yet, but
pre-release builds are available.

0.83 will be mostly a bug-fix release, because 0.82 had some bugs. So
we'd like people to test the pre-release builds and report any problems
they find. If we can identify and fix them now, then the real 0.83
release won't have them.

The pre-release builds of PuTTY 0.83 are on the PuTTY website at

    https://www.chiark.greenend.org.uk/~sgtatham/putty/prerel.html

(In fact, these pre-release builds have been available for some weeks
already, but I delayed sending this email in case it was missed or
lost in the holiday period.)

Bug fixes in this release include:

 - PSFTP's command line option '-b', for handling batch files of PSFTP
   commands, was completely broken in 0.82 as a side effect of Unicode
   support work. It's now fixed again.

 - PuTTY could fail an assertion if an SSH server timed out your
   connection while you were still at the login prompt, and then you
   selected 'Restart Session'.

 - The default 32-bit Windows builds of PuTTY stopped running on
   Windows XP, not intentionally. (Windows would report them as
   incompatible.)

 - PuTTY's username and password prompts in the terminal accidentally
   stopped recognising the keystrokes Ctrl+M and Ctrl+J as ways to
   terminate an input line, which broke third-party tools which send
   keystrokes to PuTTY and expected those sequences to work.

 - Windows PuTTY could fail to update the window width and height
   fields in its configuration when resized via the PowerToys
   "FancyZones" tool, or any other tool that resize application
   windows by the same method.

 - On Unix PuTTY and pterm, the keys on the small keypad above the
   arrows (Home, End etc) could misbehave in some builds, including
   doing nothing at all.

As well as those bug fixes, there are two new features:

 - In SSH, we now support key exchange using the post-quantum
   algorithm "ML-KEM", recently standardised by NIST. This is our
   second supported post-quantum algorithm, in addition to NTRU Prime
   which has been in PuTTY since 0.78. At present, both algorithms are
   run in parallel with an existing classical algorithm, just in case.

 - On Windows, all of the PuTTY tools' file selector dialogs now
   support Unicode file names which don't fit into the system code
   page. (But like the rest of the recent Unicode additions, such
   filenames still can't reliably be stored in saved sessions.)

We're hoping to release PuTTY 0.83 at the start of February, so if you
do any testing well in advance of that, it increases the chance that
we'll have time to fix any bugs you find.

Enjoy using PuTTY!

Cheers,
Simon

-- 
import hashlib; print((lambda p,q,g,y,r,s,m: (lambda w:(pow(g,int(hashlib.sha1(
m.encode('ascii')).hexdigest(),16)*w%q,p)*pow(y,r*w%q,p)%p)%q)(pow(s,q-2,q))==r
and s%q!=0 and m)(12342649995480866419, 2278082317364501, 1670428356600652640,
5398151833726432125, 645223105888478, 1916678356240619, "<anakin at pobox.com>"))