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258a36be31
In the initial commit 031d86ed5ba4dd4 that introduced them, I accidentally put them below the 'warn about insecurity' line, which I didn't mean to. Moved them up to just above the existing group14. Also, I've arranged them in a slightly weird order, so that the most preferred group of this collection is the medium-sized group16, followed by the larger ones (17 and 18) and then the smaller 15. Rationale: larger is better _until_ it starts costing way too much CPU time, and group18 can grind quite painfully on a slow machine. (And of course users are free to reconfigure if they have different preferences.) This isn't really ideal, of course. The idea that you might not want to use group18 *because it's slow* contradicts the basic concept of PuTTY's current crypto-preferences UI, which assumes that you rank things by security, which is why there's a dividing line below which things are assumed insecure. I hope that in a future release we'll rework the UI so that you can express more subtle ideas of what crypto you do and don't like. But this will do for the moment. The GSS versions of the same DH methods are reordered similarly.
This is the README for PuTTY, a free Windows and Unix Telnet and SSH
client.
PuTTY is built using CMake <https://cmake.org/>. To compile in the
simplest way (on any of Linux, Windows or Mac), run these commands in
the source directory:
cmake .
cmake --build .
Then, to install in the simplest way on Linux or Mac:
cmake --build . --target install
On Unix, pterm would like to be setuid or setgid, as appropriate, to
permit it to write records of user logins to /var/run/utmp and
/var/log/wtmp. (Of course it will not use this privilege for
anything else, and in particular it will drop all privileges before
starting up complex subsystems like GTK.) The cmake install step
doesn't attempt to add these privileges, so if you want user login
recording to work, you should manually ch{own,grp} and chmod the
pterm binary yourself after installation. If you don't do this,
pterm will still work, but not update the user login databases.
Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.
The PuTTY home web site is
https://www.chiark.greenend.org.uk/~sgtatham/putty/
If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.
See the file LICENCE for the licence conditions.