NEWS 22.5 KB
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News for the 1.x.y release

	lshd now does the equivalence of ulimit -n unlimited, this is
	inherited by processes started upon client requests. If you
	don't want this, you should use /etc/{profile,login,whatever}
	to set limits for your users. Do note that PAM-based solutions
	will NOT work as PAM is used from a separate process that
	terminates as soon as the authentication is finished (this of
	course goes for environment variables too).

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News for the 1.5 release
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	Implemented the server side of X11 forwarding. Try lshd
	--x11-forward. There's one known bug: The server may start
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	sending data on the session channel (typically your first
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	shell prompt) before it has sent the reply to the client's
	"shell" or "exec" request. lsh will complain about, and ignore
	that data.

	As part of the X11 hacking, the socket code have been
	reorganized.

	Deleted one of the ipv6 configure tests. Now lsh will happily
	build ipv6 support even if ipv6 is not available at run-time
	on the build machine.

	Fixed bug preventing -c none from working.

	Another bug fix, call setsid even in the non-pty case.

	Various bug fixes.
	
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News for the 1.4.2 release

	Fixed minor bug in bubble-babble key display.

	Fixed support for encrypted private keys.

	Tweaks to the handling of disabled accounts, and shadow
	passwords.

	  * Shadow records are looked up only if there's a single "x"
	    in the passwd entry.

	  * A passwd entry with a single "*" is interpreted as an
	    account that is open but with ordinary password
	    authentication disabled.

	  * A passwd entry that starts with "*" but is longer than one
            character is interpreted as a disabled account.

	  * It is recommended that all disabled accounts have their
            login shells set to something harmless, e.g. /bin/false.

	Disabled the "I/O error" message that was printed to the
	server log every time a session logged out.

	Improved the server's EOF-handling on pty:s.

	Other minor bug fixes.
	
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News for the 1.4.1 release

	Added --enable-initgroups-workaround option to the configure
	script.

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News for the 1.4 release
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	In 1.3.6, there was an incompatible change to the rsa key
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	format. This change has been reverted for 1.4. You may want to
	pass your keys through `sexp-conv
	--replace=%rsa-pkcs1%rsa-pkcs1-sha1% -f transport'
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	lshd now sets SSH_CLIENT and SSH_TTY (if appropiate).
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	TCP-wrapper support contributed by Pontus Sköld, pass
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	--with-tcpwrappers to configure to enable.
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	Display more information about unknown keys, including
	openssh-style fingerprint and "bubblebabble"-fingerprint. 

	Using the lsh/lshg gateway could sometimes generated packets
	that slightly exceeded a channes maximum packet size; this bug
	has been fixed.

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News for the 1.3.7 release

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	Improved key reexchange handling. Should now request key
	reexchange about once per hour (reexchange requests after 1GB
	data not yet implemented).
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	Use the aes256-cbc cipher by default. Includes sparc assembler
	code, and the C implementation has been optimized as well.

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	Rewrote the RSA code to use Nettle's functions for signatures
	and key generation.

	Build requirements changed, lsh now needs liboop-0.8 or later,
	and GMP-3.1 or later.
	
	lshd handles SIGHUP by closing its listening socket, and
	then waiting for existing connections to be closed before
	exiting. 

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	Implemented handshake timeout, both server and client
	disconnects if handshake and userauthentication is not
	completed in about ten minutes.

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	Reorganized server pty handling. Now it works also on Solaris.

	Added utmp logging.
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	Rewrote the code for executing user processes. Now it avoids
	the sequence fork(), setuid(), exec(), which may leave server
	memory readable by users between setuid and exec. Instead, the
	server exec:s a helper program lsh-execuv that changes the uid
	before exec:ing the shell.
	
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	Helper program to let the server use PAM passwords.
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	Contributed by Pontus Sköld.
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	New option --server to lsh-keygen and lsh-writekey. It makes
	the programs use the system seed-file, and also changes
	lsh-writekey's default output files to /etc/lsh_host_key and
	/etc/lsh_host_key.pub.

	Made lsh-writekey a little smarter, now it doesn't create any
	output files until it has something to write to them.
	
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	In interactive mode, the client modifyes the terminal's VMIN
	and VTIME values to get more than one character per packet.

	Fixed the default port handling on systems that don't include
	ssh in /etc/services.

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	New client option --subsystem for starting a subsystem such as
	sftp on the server. Appeared already in 1.3.6, but wasn't
	mentioned in NEWS.
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	Pontus Sköld's file transfer client lsftp is included in the
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	distribution.
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News for the 1.3.6 release

	New randomness generator based on Yarrow-256. Initial seeding
	is done by a separate program, lsh-make-seed. See the manual
	or the README file.

	Manual update, new section describing the files and
	environment variables that are used.

	Various bug-fixes.

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News for the 1.3.5 release:

	Fixed window change handling in lshd.

	Replaced the io-backend code. Now uses liboop.
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	Uses nettle's implementations of cbc and des3 chaining.
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News for the 1.3.4 release:

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	Updated the manual.
	
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	Added X11 forwarding to lsh. Try lsh -x some.where. -x is a
	modifier flag for the -E, -S and default actions. 

	New escape sequences <escape> d, <eascape>q and <escape> v,
	for toggling the debug, quiet and verbose flags.

	Fixed twofish bug in nettle, spotted by Jean-Pierre.
	
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News for the 1.3.3 release:

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	Server suport for subsystems, and a new experimental command
	line option --subsystems for lshd. An sftp-server included in
	the dist, but it's mostly untested.

	Better messages when the initial handshake fails.

	Support for AES (formely known only as rijndael).

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	Simplified the internal command definition machinery.

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	Fixed bug in lshg; it crashed if given a host name argument
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	with strange characters.

	Updates to SRP support, to get it closer to the latest draft.
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	New client option -B, which is like -N but also puts the
	process in the background.
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News for the 1.3.2 release:
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	Suspend works better, and is bound to the escape sequence
	RET ~ ^Z.
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News for the 1.3.1 release:
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	Repackaged the low-level crypto functions as the "nettle"
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	library. Bugfixes for serpent.
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News for the 1.3.0 release:

	Bugfixes (same as in 1.2.2).

	constness fixes.

	Deleted the complex streamed sexp-parser.

	Verbose messages at KEXINIT and NEWKEYS.

	Tolerate empty atoms (like in "3des-cbs,,aes256-cbc,").

	If compiled with --debug-alloc, all strings are counted and
	leaks detected. Fixed some minor leaks.

	Changed conventions for packet handlers, all packets are freed
	by connection_handle_packet, so individual packet handlers
	shouldn't do that.

	Handle the TSTP signal. Backgrounding still doesn't work quite
	right, though.
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	Rewrote parts of the gaba.scm preprocessor.
		
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News for the 1.2.0 release:

	Added the lcp copying script to the distribution (although it
	isn't installed automatically). No other changes.
	
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News for the 1.1.9 release:

	Some code cleanup. Removed a dozen files, four classes and
	about 1k lines of code. Useful tools are make class-map and
	./configure --enable-gcov.
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	To get gcov to work properly when running several processes in
	parallell, you may also want to apply misc/libgcc2.c-patch to
	gcc. The patch adds locking for the output *.da files.
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News for the 1.1.8 release:

	Updated the scsh support for scsh-0.5.2. Note that scsh is now
	free software; the "non-commercial use" restrictions were
	removed in the 0.5.2 release.

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	Updated the channel close logic to be compatible with other
	ssh implementations.

	Handle POLLERR; the previous version went into a busy loop if
	poll set the POLLERR flag on any fd.

	--cvs-workaround=e is now on by default. New option
        --no-cvs-workaround to disable it.

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News for the 1.1.7 release:

	More bug fixes, most of them related to the EOF handling.

	Added testcase for lshg -L, fixed the exposed bugs.

	Don't output the "Userauth successful" message unless in
	verbose mode.
	
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News for the 1.1.6 release:

	Fixed a bug in the testsuite framework, and discovered and
	fixed a few new and old bugs (mostly related to the EOF and
	channel close logic).

	Improved handling of POLLHUP on Linux.
	
	Fixed bug in lshd password authentication, which sometimes
	crashed lshd.

	Support for RSA keys, according to
	draft-ietf-secsh-transport-09.txt. Wrote a test case for RSA
	hostkeys, and fixed a bug in the ssh-rsa public key decoder.

	Added support for OpenSSH style RSA keys to ssh-conv.

	Changed unix_random.c to be more quiet.

	Changed tcpip forwarding code to call shutdown() when it
	receives an SSH_MSG_CHANNEL_EOF.

	Updated the manual.
	
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News for the 1.1.5 release:

	Fixed bug in random generator seeding (spotted by jps).

	More argp fixes.

	Work on rsync, but still not used.
	
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News for the 1.1.4 release:

	Fixes for encrypted private keys (thanks to jps).

	Updated argp, and ripped out its dependencies on getopt.
	
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News for the 1.1.3 release:

	Support for encrypted private keys (not tested).

	The lshg gateway client works.
	
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News for the 1.1.2 release:

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	New experimental option to lsh: --cvs-workaround. Using this
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	option causes lsh to fork off a few extra processes to handle
	its stdio file descriptors, and avoid setting them in
	nonblocking mode. One can also use for instance
	--cvs-workaround=o to fork only for stdout; the optional
	argument can be any combination of the characters 'i' (stdin),
	'o' (stdout) and 'e' (stderr). If this turns out to be useful,
	the option will probably be renamed and perhaps made the
	default.

	Implemented window change messages in the client.
						
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	Added signal handlers to io_backend.

	Reorganized the code a little to make the lshg binary smaller.
	
	Some work on an "interactive" class, encapsulating the
	oparations one may want to do on the user's tty, including
	subscription for window change events.
	
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News for the 1.1.1 release:

	First try for the gateway mode. New option -G for lsh, and a
	new program lshg for talking to the gateway.

	lshd forks of a new process and changes its uid for reading
	user files. The only file read in this way, so far, is
	~/.lsh/srp-verifier.

	Improved randomness framework.
	
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News for the 1.1.0 release:

	First, note that the 1.1.x series should be considered
	experimental.

	New program lsh-export-key (contributed by jps, and then
	hacked some more by me).

	Some of the methods for public-key operations have been
	improved and generalized.
	
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News for the 1.0.6 release

	Fixed bug in ssh-dss bug-compatibility.
	
	Experimental kerberos support. New lshd option
	--kerberos-passwords. Compiles with heimdal, MIT kerberos not yet
	tested. 

	Improved handling of serialized userauth requests (not yet
	used by kerberos password functions).

	Hacked serpent code to support variable size keys.

	Added rijndael test cases. No working serpent testcases yet.
	
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News for the 1.0.5 release

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	Experimental support for RSA, using spki-style keys and
	signatures. 

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	Some reorganization of signature algorithms, to support
	spki-style signatures (including rsa) properly.
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	Fix for key renegotiation bug reported by jps.

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	New algorithms bulk encryption algorithms: serpent and
	rijndael. Rijndael implementation and lsh glue code
	contributed by Rafael R. Sevilla. Serpent implementation by
	Ross Anderson, Eli Biham, and Lars Knudsen.

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	New option -call to use any supported bulk encryption
	algorithm; the default preference list is quite conservative.

	New option --hostkey-algorithm, to tune the hostkey algorithm
	preference list.

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	Renamed lsh_keygen and lsh_writekey to lsh-keygen and
	lsh-writekey, respectively (actually happened in 1.0.4, but I
	forgot to mention that).
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News for the 1.0.4 release

	Fixed yet another bug in the userauth logic.

	Some RSA support (so far, only lsh-keygen and lsh-writekey
	support RSA). 408 hours left...

	Support for the transport spki format in sexp_parser.c.

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News for the 1.0.3 release

	Fixed bug in client userauth logic.

	Configure fix: put -L and -R flags in LDFLAGS, not LIBS.

	Portability fixes and some signed/unsigned cleanup.
	
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News for the 1.0.2 release

	Fixed bug in lsh_writekey, and improved the error message when
	the outputfile already exists.

	Fixed bug in the poll emulation in jpoll.c (noticed by
	Jean-Pierre Stierlin).

	Portability bugs reported by Jean-Pierre Stierlin, for
	compiling on MacOS.
	
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News for the 1.0.1 release

	Various bug fixes. Spelling and grammar fixes in the manual,
	contributed by Johan Myreen.
	Hacked lsh user authentication to stop asking for a password
	if the empty password is entered twice.

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News for the 0.9.15 release

	Portability fixes. Fixed 32-bit bug in the memory allocation
	that appeared on alpha-linux. Fixes for HPUX compiler. Fixed
	make distclean, which failed when cleaning in src/symmetric.

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News for the 0.9.14 release

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	Added --stdin, --stdout and --stderr options to lsh.
	
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	Implemented pretty-printing of s-expressions when using the
	advanced syntax.

	Renamed sexp_conv to sexp-conv.
	
	Fixed bug preventing forwarded connections from being closed
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	properly. Reported by Daniel Prevett and Joseph Galbraith.
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	New Getting Started chapter in the manual, and other
	documentation updates.
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News for the 0.9.13 release

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	New program lsh-decode-key and script ssh-conv, for converting
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	OpenSSH/ssh2 keys to sexp format.

	Updated SRP support to the draft doc/srp-spec.txt.
	Made it possible to skip the userauth sub-protocol when using
	SRP. The proxy program was probably broken in the process.
	
	Fixed lsh-authorize, to use the right options to sexp_conv.

	Let $HOME override the home directory in the passwd database,
	when running as non-root.
	
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News for the 0.9.10 release

	Fixed bug that caused buffered output to be lost at channel
	close.

	Experimental SRP support.

	New program srp-gen.
	
	Improved the hex dumps in debug output.

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News for the 0.9.9 release

	autoconf fixes. Add -R-flags when appropriate. Recognize
	gmp-3.x. Added --with-lib-path option.

	Portability fixes.

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News for the 0.9.7 release

	Experimental IPv6 support.

	Experimental support for encrypted private keys (for now, only
	in lsh_writekey).

	wtmp logging.

	Improved behaviour of --port and -z options.

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News for the 0.9.2 release

	Improved support for shadow passwords.

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	Some preparations for gateway mode.
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News for the 0.9.1 release

	Support for remote commands directly on the lsh command line.
	New options -S and -E. More features in the proxy.

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News for the 0.2.9 release

	Fixed bugs in the length checking of incoming packets.

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News for the 0.2.8 release

	Reworked i/o and the CHANNEL_OPEN mechanism. Seems to fix the
	crash when requesting forwarding to a port that doesn't
	answer.

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	Also close ports for local and remote forwarding properly. 

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	Updated the proxy code.
 
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News for the 0.2.7 release

	Bug fixes for compialtion on Solaris.

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News for the 0.2.6 release

	Bugfixes for tcp forwarding functions.

	Some more tests for testsuite. To try them, you must first
	setup lsh so that you can login with no password. Then type
	"make check-more" in the testsuite subdirectory. 
	
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News for the 0.2.5 release

	Bugfixes.

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News for the 0.2.3 release

	Added lshd options --password, --no-password, --publickey and
	--no-publickey, for configuring the set of supported userauth
	methods.

	Changes to the proxy program (Bazsi).

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News for the 0.2.2 release

	Bug fixes. Verbose messages on algorithm selection.

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News for the 000.2 release

	Bugfixes. New --pty-support and --no-pty-support options for
	lshd.

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News for the lsh-0.1.20 release

	Bugfixes. New test script for lsh_writekey.

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News for the lsh-0.1.19 release

	Lots of bugfixes. Reading of ~/.lsh/known_hosts and
	~/.lsh/identity seems to work.

	New contrib sub-directory.
	
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News for the lsh-0.1.18 release

	lsh now reads ACL:s from the ~/.lsh/known_hosts file.

	First attempt at a m4-based testsuite. It depends on m4 being
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	able to handle the eight-bit quote characters » and «. If your
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	m4 doesn't do that, get the latest beta of GNU m4 or recompile
	GNU m4-1.4 with CFLAGS=-funsigned-char.

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News for the lsh-0.1.17 release

	More support for host authentication and SPKI.

	First version that includes Bazsi's work on an ssh-proxy (i.e.
	a program that implements the traditional Man-in-the-middle
	attack on the ssh2 protocol). Could be useful for people
	running firewalls, and also for those of us who want to point
	out that it's a bad idea to use unauthenticated hostkeys.

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News for the lsh-0.1.16 release

	Some preparations for real host authentication.
	
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News for the lsh-0.1.15 release

	Support for publickey user authentication.

	A new script lsh-authorize.

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News for the lsh-0.1.14 release

	First try on daemonization support.

	Better tracing; try --trace to get some more information than
	with -v, but without all the boring information generated by
	--debug.

	Generally nicer options and help mesasges, thanks to argp.

	Better handling of i/o exceptions. lshd should no longer crash
	when connections behave unexpectedly.

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News for the lsh-0.1.12 release

	Tried to fix bugs related to channel close. In the process,
	improved the resource mechanism, and let each channel
	have it's own list of resources.

	Fixed configure.in to handle systems with neither scsh or
	guile installed.
	

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News for the lsh-0.1.11 release

	Support for other scheme implementations in the build process,
	in particular guile.
	
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News for the lsh-0.1.10 release

	Fixed bug in sexp parser and lsh_writekey.

	Merged more of bazsis patches.
	

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News for the lsh-0.1.9 release

	Lot's of bug fixes. This version actually seems to work.

	Bazsi's public key patches is in, although I haven't been able
	to test them.

	The SEXP parser is rewritten to use the new exception
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	framework. The program that makes the most of of this right
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	now is lsh_writekey. Its core reads like

     (params
       (private object io_write_file_info)
       (public object io_write_file_info))
     
     (lambda (backend)
       (let ((key (read (stdin backend))))
         (prog1 (transport (open backend public) (private2public key))
                ; FIXME: Add encryption here
                (canonical (open backend private) key))))))
	
	The sexptest program has been renamed to sexp_conv. It reads
	an sexp (for now, only canonical and transport syntax are
	supported) on stdin, and prints it using advanced, transport
	or canonical syntax. More features could be added.

	The --debug option now dumps both sent and received packets,
	and it includes a human readable name of the packet type.
	Packets of type SSH_MSG_USERAUTH_REQUEST are suppressed,
	however, because they typically contains user passwords.

	There is one known bug: Running without pty allocation (lsh
	-nt) doesn't work, at least not for me.

	
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News for the lsh-0.1.8 release

	Reworked all the error handling to use exceptions. No new
	features, but lots of new bugs.

There are no official releases numbered 0.1.4 -- 0.1.7. However,
these version numbers are used for Bazsi's unofficial releases during
the summer. The unofficial releases feature public key user
authentication and better compatibility with Datafellow's ssh2
products. 

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News for the lsh-0.1.3 release

	Local forwarding (-L) works. -R is slightly broken.

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News for the lsh-0.1.2 release

	First user visible tcpforwarding (-L option). Not tested
	yet...

	Fixed flow control.

	DSA signatures should conform better both to the draft andd to
	the ssh-2.x implementations.

	Better handling of POLLHUP.
	
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News for the lsh-0.1 release

	Added compiler.scm to the dist.

	Changed the session key generation to comply with the latest
	draft (pointed out by Joseph Galbraith).

	Added IDEA support (Bazsi).

	Fixes to pty handling and flow control (mostly Bazsi). 

	Fixed the client side handling of userauth failures.

	By default, if we are running with a pty, use the same fd for
	stdout and stderr. This workaround should make lsh more
	friendly to bash and other programs that expect stderr to be a
	tty.

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NEWS for the 1999-04-25 snapshot:

	Fixed a few bugs in pty and eof handling. Should now work
	about as well as the 03-17 snapshot. Also removed most old
	#if:ed out code.

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NEWS for the 1999-04-20 snapshot:

	Internal reorganization. Implemented the "control language".
	And some bug fixes. See ChangeLog for all the details.

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NEWS for the 1999-03-17 snapshot

	CAST and TWFOFISH seem to work now.

	Includes a lambda->SK compiler.

	Bugfixes.

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NEWS for the 1999-03-08 snapshot

	No user visible changes. Added a instance variable to keep
	track of the amount of buffered data in the write_buffer
	objects (needed to fix the broken flow control).

	Added a generic doubly linked list, currently used by the
	write_buffer and resource_list classes, but which will be
	needed for more things (see the CONTROL item on the TODO
        list). 

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NEWS for the 1999-03-07 snapshot

	Improved CFMAKERAW. Ugly fix for the UNIX98-style pty:s
	support.

	Twofish support (not quite working).

	Started on tcp forwarding (Bazsi).

	Some support for broken ssh2 signatures (Baszi). Needs some
	more work.

	Various bugfixes.

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NEWS for the 1999-02-28 snapshot

	Portability fixes for Solaris.

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NEWS for the 1999-01-28 snapshot

	Some PTY support

	Integrated support for sshd1 fallback (not tested)

	Bug fixes.

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NEWS for the 1999-01-14 snapshot

	Fixed off-by-one bug in dss_keygen.

	Some portability fixes (sys/poll.h, crypt.h, unistd.h).

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NEWS for the 1999-01-08 snapshot:
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	New program lsh_writekey.

NEWS for the 1999-01-05 snapshot:

	Command line options to select which algorithms to use.
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	Various bug fixes. The 3des and blowfish support seems do work
	now. 

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NEWS for the 1999-01-01 snapshot:

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	ZLIB support. (Bazsi)
	Long key support (needed for 3DES) (Bazsi).
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	Fixed configure test for shutdown().
	Various bug fixes (Ray).

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NEWS for the 1998-12-26 snapshot:

	New lsh_keygen program.

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NEWS for the 1998-12-21 snapshot:

Moved most objects in crypto.c and abstract_crypto.c into separate
files.

Added a workaround for Datafellows ssh2 client, which (contrary to the
specification) asks for protocol version 1.99.

Use /dev/urandom, if available.

Collect most object files into liblsh.a.

Started on a key generation program.

TASKLIST and NOTES files now included in the snapshot.


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NEWS since the 1998-12-17 snapshot:

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Support for md5 (by Balázs Scheidler).
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Various bugfixes.


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NEWS since the 1998-12-11 snapshot:

A resource mechanism (resource.[ch]) used by the server to cleanup
properly when a connection dies unexpectedly. Can be used to kill
child processes, close files and ports, etc.

Generic code for chaining ciphers (crypto_cbc()) and piping them
together (crypto_cascade()).

Some untested support for blowfish and 3DES. A -c command line option
is needed.

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A few bugfixes. Thanks to J.H.M. Dassen (Ray) and Balázs Scheidler.