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Simon Tatham fca13a17b1 Break up crypto modules containing HW acceleration. 
This applies to all of AES, SHA-1, SHA-256 and SHA-512. All those
source files previously contained multiple implementations of the
algorithm, enabled or disabled by ifdefs detecting whether they would
work on a given compiler. And in order to get advanced machine
instructions like AES-NI or NEON crypto into the output file when the
compile flags hadn't enabled them, we had to do nasty stuff with
compiler-specific pragmas or attributes.

Now we can do the detection at cmake time, and enable advanced
instructions in the more sensible way, by compile-time flags. So I've
broken up each of these modules into lots of sub-pieces: a file called
(e.g.) 'foo-common.c' containing common definitions across all
implementations (such as round constants), one called 'foo-select.c'
containing the top-level vtable(s), and a separate file for each
implementation exporting just the vtable(s) for that implementation.

One advantage of this is that it depends a lot less on compiler-
specific bodgery. My particular least favourite part of the previous
setup was the part where I had to _manually_ define some Arm ACLE
feature macros before including <arm_neon.h>, so that it would define
the intrinsics I wanted. Now I'm enabling interesting architecture
features in the normal way, on the compiler command line, there's no
need for that kind of trick: the right feature macros are already
defined and <arm_neon.h> does the right thing.

Another change in this reorganisation is that I've stopped assuming
there's just one hardware implementation per platform. Previously, the
accelerated vtables were called things like sha256_hw, and varied
between FOO-NI and NEON depending on platform; and the selection code
would simply ask 'is hw available? if so, use hw, else sw'. Now, each
HW acceleration strategy names its vtable its own way, and the
selection vtable has a whole list of possibilities to iterate over
looking for a supported one. So if someone feels like writing a second
accelerated implementation of something for a given platform - for
example, I've heard you can use plain NEON to speed up AES somewhat
even without the crypto extension - then it will now have somewhere to
drop in alongside the existing ones.
2021-04-21 21:55:26 +01:00
charset Add missing dependencies on generated source files. 2021-04-18 17:01:50 +01:00
cmake Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
contrib New script contrib/plinkfs. 2020-08-04 18:56:47 +01:00
crypto Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
doc Merge fixes (mostly docs) from 'pre-0.75' branch. 2021-04-20 16:27:19 +01:00
icons Migrate all Python scripts to Python 3. 2020-03-04 21:23:49 +00:00
test Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
unix Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
utils Move utils filename list into its own subdir. 2021-04-19 18:26:56 +01:00
windows Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
.gitignore Add .gitignore rules for in-tree builds. 2021-04-19 18:26:56 +01:00
agentf.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
aqsync.c Build outgoing SSH agent requests in a strbuf. 2018-05-25 14:36:16 +01:00
be_all_s.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
be_all.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
be_misc.c Formatting change to braces around one case of a switch. 2020-02-16 11:26:21 +00:00
be_none.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
be_nos_s.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
be_nossh.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
be_ssh.c New GUI for protocol selection. 2021-04-10 09:51:29 +01:00
Buildscr Buildscr: set C flags explicitly. 2021-04-19 18:26:56 +01:00
Buildscr.cv Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
callback.c Add lots of missing 'static' keywords. 2020-01-29 06:44:18 +00:00
cgtest.c cmdgen: support configurable key fingerprint type. 2021-03-13 11:01:35 +00:00
CHECKLST.txt Fix build failure at -DNOT_X_WINDOWS. 2021-01-26 18:12:48 +00:00
clicons.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
CMakeLists.txt Move crypto into its own subdirectory. 2021-04-21 21:55:26 +01:00
cmdgen.c cmdgen: Write through correct leg of union. 2021-04-20 15:34:54 +01:00
cmdline.c Document new backend command-line options. 2021-02-21 16:44:51 +00:00
config.c Bring SUPDUP config pane title in line with others. 2021-04-10 15:30:19 +01:00
console.c Console host key prompts: add 'more info' action. 2021-03-13 13:54:59 +00:00
console.h Factor out some common code in {ux,win}cons.c. 2021-03-13 11:01:35 +00:00
cproxy.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
defs.h Make cmake.h available everywhere. 2021-04-19 18:26:56 +01:00
dialog.c dialog system: add a side-by-side alignment feature. 2021-04-10 09:43:25 +01:00
dialog.h dialog system: add a side-by-side alignment feature. 2021-04-10 09:43:25 +01:00
ecc.h New query function ecc_montgomery_is_identity. 2020-02-28 20:40:08 +00:00
errsock.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
fuzzterm.c Remove stub functions that are no longer needed. 2021-04-18 08:30:44 +01:00
import.c Merge the 0.74 release branch back to master. 2020-06-27 08:11:22 +01:00
LATEST.VER Update version number for 0.74 release. 2020-06-21 16:39:47 +01:00
ldisc.c Remove assertion that len != 0 in ldisc_send. 2020-06-14 15:49:36 +01:00
ldisc.h New array-growing macros: sgrowarray and sgrowarrayn. 2019-02-28 20:15:38 +00:00
LICENCE It's a new year. 2021-01-11 21:37:51 +00:00
licence.pl Separate the functions of licence.pl. 2021-04-17 13:52:27 +01:00
logging.c New wrapper macro for printf("%zu"), for old VS compat. 2020-02-09 08:51:37 +00:00
mainchan.c Relax criteria for accepting agent-forwarding channel-opens. 2020-12-23 22:26:44 +00:00
marshal.h Add some more marshalling functions, for file parsing. 2020-01-09 19:57:35 +00:00
millerrabin.c Factor out Miller-Rabin checking into its own file. 2020-02-29 16:53:34 +00:00
minibidi.c Formatting change to braces around one case of a switch. 2020-02-16 11:26:21 +00:00
misc.h Break up x11fwd.c. 2021-04-18 08:18:27 +01:00
mksrcarc.sh Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
mkunxarc.sh Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
mpint_i.h Start a file of 'unsafe' mp_int functions. 2020-02-23 14:49:54 +00:00
mpint.h Add mp_copy_integer_into function. 2020-03-01 20:09:01 +00:00
mpunsafe.c Start a file of 'unsafe' mp_int functions. 2020-02-23 14:49:54 +00:00
mpunsafe.h Start a file of 'unsafe' mp_int functions. 2020-02-23 14:49:54 +00:00
network.h Greatly improve printf format-string checking. 2020-02-09 08:51:37 +00:00
nocmdline.c Make cmdline_tooltype a const int. 2020-01-30 06:40:22 +00:00
nocproxy.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
nogss.c Rewrite gprefs() in settings.c so that its input mapping includes 2011-06-25 17:37:31 +00:00
noprint.c noprint.c: fix compile failure. 2021-02-10 21:07:57 +00:00
noproxy.c Introduce noproxy.c. 2020-09-13 09:11:31 +01:00
norand.c Centralise 'no random numbers' stubs into norand.c. 2020-02-07 19:17:19 +00:00
noshare.c Fix type error in noshare.c. 2020-11-14 21:39:14 +00:00
noterm.c Make calling term_nopaste() a cross-platform feature. 2013-08-17 16:06:40 +00:00
notiming.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
nullplug.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
pageant.c pageant_get_keylist: add missing init of kl->broken. 2021-04-10 10:55:53 +01:00
pageant.h winpgnt: menu options to delete/reencrypt everything. 2021-04-04 10:02:24 +01:00
pgssapi.c Fix a missing } in a GSSAPI-related comment. 2018-04-26 07:11:09 +01:00
pgssapi.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
pinger.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
pockle.c Fix false negative in Pockle discriminant check. 2020-03-13 08:02:27 +00:00
portfwd.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
pproxy.c Get rid of lots of implicit pointer types. 2018-10-04 19:10:23 +01:00
primecandidate.c PrimeCandidateSource: add one-shot mode. 2020-03-07 11:24:12 +00:00
proxy.c Fix downright weird line breaking. 2021-02-13 10:11:30 +00:00
proxy.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
pscp.c Document -ssh-connection (and -ssh) options. 2021-04-19 16:36:23 +01:00
psftp.c Document -ssh-connection (and -ssh) options. 2021-04-19 16:36:23 +01:00
psftp.h Remove FLAG_VERBOSE. 2020-01-30 06:40:21 +00:00
psftpcommon.c Fall back to not sorting large dirs in pscp -ls or psftp 'ls'. 2019-07-10 20:47:09 +01:00
psocks.c psocks: remove print_c_string(). 2021-04-08 01:45:03 +01:00
psocks.h Auxiliary application: 'psocks', a simple SOCKS server. 2020-02-23 16:36:27 +00:00
putty.h Remove the switching system in puttyps.h. 2021-04-18 08:30:44 +01:00
puttymem.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
raw.c Remove NULL initialisers in BackendVtables. 2021-02-21 22:40:09 +00:00
README Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
release.pl Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
rlogin.c Remove NULL initialisers in BackendVtables. 2021-02-21 22:40:09 +00:00
scpserver.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sesschan.c Uppity: add stunt for unauthorised agent forwarding attempts. 2020-12-23 22:26:44 +00:00
settings.c Merge the 0.74 release branch back to master. 2020-06-27 08:11:22 +01:00
sftp.c Impose an upper bound on incoming SFTP packet length. 2021-04-10 09:00:49 +01:00
sftp.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
sftpcommon.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
sftpserver.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sign.sh Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
smallprimes.c Move init_primes_array out into its own file. 2020-02-23 14:12:21 +00:00
ssh1bpp.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
ssh1censor.c Add and use BinarySource_*INIT_PL. 2019-02-06 21:46:10 +00:00
ssh1connection-client.c Relax criteria for accepting agent-forwarding channel-opens. 2020-12-23 22:26:44 +00:00
ssh1connection-server.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
ssh1connection.c Relax criteria for accepting agent-forwarding channel-opens. 2020-12-23 22:26:44 +00:00
ssh1connection.h Relax criteria for accepting agent-forwarding channel-opens. 2020-12-23 22:26:44 +00:00
ssh1login-server.c Merge the 0.74 release branch back to master. 2020-06-27 08:11:22 +01:00
ssh1login.c Pass more information to interactive host key check. 2021-03-13 13:54:59 +00:00
ssh2bpp-bare.c Support receiving RFC 8308 SSH2_MSG_EXT_INFO. 2020-11-21 15:09:41 +00:00
ssh2bpp.c Support receiving RFC 8308 SSH2_MSG_EXT_INFO. 2020-11-21 15:09:41 +00:00
ssh2censor.c Add and use BinarySource_*INIT_PL. 2019-02-06 21:46:10 +00:00
ssh2connection-client.c Relax criteria for accepting agent-forwarding channel-opens. 2020-12-23 22:26:44 +00:00
ssh2connection-server.c Pass SshServerConfig through to sesschan.c. 2019-03-31 10:35:10 +01:00
ssh2connection.c Fix premature exit if 'plink -shareexists' happens early. 2021-02-21 10:53:31 +00:00
ssh2connection.h Fix premature exit if 'plink -shareexists' happens early. 2021-02-21 10:53:31 +00:00
ssh2kex-client.c Pass more information to interactive host key check. 2021-03-13 13:54:59 +00:00
ssh2kex-server.c Support rsa-sha2-* host keys in Uppity. 2020-11-22 08:13:21 +00:00
ssh2transhk.c Add missing del234 in ssh_transient_hostkey_cache_add. 2019-06-15 21:37:36 +01:00
ssh2transport.c ssh2kex-client.c: get rid of s->fingerprint. 2021-03-13 11:01:35 +00:00
ssh2transport.h ssh2kex-client.c: get rid of s->fingerprint. 2021-03-13 11:01:35 +00:00
ssh2userauth-server.c Merge the 0.74 release branch back to master. 2020-06-27 08:11:22 +01:00
ssh2userauth.c Fix minor memory leak in rsa-sha2-256 userauth. 2020-11-25 16:25:21 +00:00
ssh.c Mention any extant downstreams in close warning. 2021-02-21 14:32:51 +00:00
ssh.h Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
sshblowf.h Turn SSH-2 ciphers into a classoid. 2018-09-19 23:08:07 +01:00
sshbpp.h Support receiving RFC 8308 SSH2_MSG_EXT_INFO. 2020-11-21 15:09:41 +00:00
sshchan.h Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sshcommon.c Allow pre-storing host key fingerprints of all types. 2021-03-13 13:54:59 +00:00
sshcr.h Assorted benign warning fixes. 2020-01-29 06:44:18 +00:00
sshcrcda.c Add lots of missing 'static' keywords. 2020-01-29 06:44:18 +00:00
sshdssg.c PrimeCandidateSource: remember prime factors of n-1. 2020-03-01 20:09:01 +00:00
sshecdsag.c New vtable API for keygen progress reporting. 2020-02-29 16:53:34 +00:00
sshgss.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
sshgssc.c Make dupcat() into a variadic macro. 2019-10-14 19:42:37 +01:00
sshgssc.h Support GSS key exchange, for Kerberos 5 only. 2018-04-26 07:21:16 +01:00
sshkeygen.h RSA generation: option to generate strong primes. 2020-03-07 11:37:31 +00:00
sshnogss.c Post-release destabilisation! Completely remove the struct type 2011-07-14 18:52:21 +00:00
sshppl.h Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sshprime.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sshpubk.c Fix failure handling when loading a PPK file. 2021-04-10 09:13:49 +01:00
sshrand.c Remove dependency of sshrand.c on SHA-512. 2020-09-13 09:11:31 +01:00
sshrsag.c RSA generation: option to generate strong primes. 2020-03-07 11:37:31 +00:00
sshserver.c Uppity: add stunt for unauthorised agent forwarding attempts. 2020-12-23 22:26:44 +00:00
sshserver.h Uppity: add stunt for unauthorised agent forwarding attempts. 2020-12-23 22:26:44 +00:00
sshshare.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sshsignals.h New system for handling SSH signals. 2018-10-21 10:02:10 +01:00
sshttymodes.h New system for handling SSH terminal modes. 2018-10-21 10:02:10 +01:00
sshverstring.c Change vtable defs to use C99 designated initialisers. 2020-03-10 21:06:29 +00:00
sshzlib.c Fix a few warnings reported by Visual Studio. 2021-04-10 11:51:08 +01:00
storage.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
supdup.c Make the backend_init error message dynamic. (NFC) 2020-04-18 13:33:51 +01:00
telnet.c Make the backend_init error message dynamic. (NFC) 2020-04-18 13:33:51 +01:00
terminal.c Make pterm's default window title more sensible. 2021-03-08 06:59:26 +00:00
terminal.h Apply UPDATE_DELAY in arrears, not in advance. 2021-02-07 19:59:21 +00:00
testback.c Make the backend_init error message dynamic. (NFC) 2020-04-18 13:33:51 +01:00
testcrypt.c Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
testcrypt.h Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
testsc.c Break up crypto modules containing HW acceleration. 2021-04-21 21:55:26 +01:00
testzlib.c Ensure test programs have a dputs(). 2020-11-28 17:44:27 +00:00
timing.c Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
tree234.h Whitespace rationalisation of entire code base. 2019-09-08 20:29:21 +01:00
version.h Replace mkfiles.pl with a CMake build system. 2021-04-17 13:53:02 +01:00
x11disp.c Break up x11fwd.c. 2021-04-18 08:18:27 +01:00
x11fwd.c Break up x11fwd.c. 2021-04-18 08:18:27 +01:00

README 

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 .

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.