freebsd-dev/crypto/openssh/README
Ed Maste 87c1498d1a ssh: update to OpenSSH v9.0p1
Release notes are available at https://www.openssh.com/txt/release-9.0

Some highlights:

 * ssh(1), sshd(8): use the hybrid Streamlined NTRU Prime + x25519 key
   exchange method by default ("sntrup761x25519-sha512@openssh.com").
   The NTRU algorithm is believed to resist attacks enabled by future
   quantum computers and is paired with the X25519 ECDH key exchange
   (the previous default) as a backstop against any weaknesses in
   NTRU Prime that may be discovered in the future. The combination
   ensures that the hybrid exchange offers at least as good security
   as the status quo.

 * sftp-server(8): support the "copy-data" extension to allow server-
   side copying of files/data, following the design in
   draft-ietf-secsh-filexfer-extensions-00. bz2948

 * sftp(1): add a "cp" command to allow the sftp client to perform
   server-side file copies.

This commit excludes the scp(1) change to use the SFTP protocol by
default; that change will immediately follow.

MFC after:	1 month
Relnotes:	Yes
Sponsored by:	The FreeBSD Foundation
2022-04-15 10:41:08 -04:00

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See https://www.openssh.com/releasenotes.html#9.0p1 for the release notes.
Please read https://www.openssh.com/report.html for bug reporting
instructions and note that we do not use Github for bug reporting or
patch/pull-request management.
This is the port of OpenBSD's excellent OpenSSH[0] to Linux and other
Unices.
OpenSSH is based on the last free version of Tatu Ylonen's sample
implementation with all patent-encumbered algorithms removed (to
external libraries), all known security bugs fixed, new features
reintroduced and many other clean-ups. OpenSSH has been created by
Aaron Campbell, Bob Beck, Markus Friedl, Niels Provos, Theo de Raadt,
and Dug Song. It has a homepage at https://www.openssh.com/
This port consists of the re-introduction of autoconf support, PAM
support, EGD/PRNGD support and replacements for OpenBSD library
functions that are (regrettably) absent from other unices. This port
has been best tested on AIX, Cygwin, HP-UX, Linux, MacOS/X,
FreeBSD, NetBSD, OpenBSD, OpenServer, Solaris and UnixWare.
This version actively tracks changes in the OpenBSD CVS repository.
The PAM support is now more functional than the popular packages of
commercial ssh-1.2.x. It checks "account" and "session" modules for
all logins, not just when using password authentication.
There is now several mailing lists for this port of OpenSSH. Please
refer to https://www.openssh.com/list.html for details on how to join.
Please send bug reports and patches to https://bugzilla.mindrot.org or
the mailing list openssh-unix-dev@mindrot.org. To mitigate spam, the
list only allows posting from subscribed addresses. Code contribution
are welcomed, but please follow the OpenBSD style guidelines[1].
Please refer to the INSTALL document for information on dependencies and
how to install OpenSSH on your system.
Damien Miller <djm@mindrot.org>
Miscellania -
This version of OpenSSH is based upon code retrieved from the OpenBSD CVS
repository which in turn was based on the last free sample implementation
released by Tatu Ylonen.
References -
[0] https://www.openssh.com/
[1] https://man.openbsd.org/style.9