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Adam Langley 836529a63c crypto/tls: use pool building for certificate checking
Previously we checked the certificate chain from the leaf
upwards and expected to jump from the last cert in the chain to
a root certificate.

Although technically correct, there are a number of sites with
problems including out-of-order certs, superfluous certs and
missing certs.

The last of these requires AIA chasing, which is a lot of
complexity. However, we can address the more common cases by
using a pool building algorithm, as browsers do.

We build a pool of root certificates and a pool from the
server's chain. We then try to build a path to a root
certificate, using either of these pools.

This differs from the behaviour of, say, Firefox in that Firefox
will accumulate intermedite certificate in a persistent pool in
the hope that it can use them to fill in gaps in future chains.

We don't do that because it leads to confusing errors which only
occur based on the order to sites visited.

This change also enabled SNI for tls.Dial so that sites will return
the correct certificate chain.

R=rsc
CC=golang-dev
https://golang.org/cl/2916041
2010-11-05 09:54:56 -04:00
doc doc: make root.html's blog section less cluttered. 2010-11-05 16:13:58 +11:00
include cov and prof: implement windows version (just function stubs and build mods) 2010-07-30 11:47:11 +10:00
lib codereview: more utf-8 nonsense 2010-11-04 13:58:32 -04:00
misc kate: update for append 2010-10-30 21:25:19 -07:00
src crypto/tls: use pool building for certificate checking 2010-11-05 09:54:56 -04:00
test gc: line comments may end in EOF 2010-11-04 16:04:04 -04:00
.hgignore add _testmain.go to .hgignore 2010-10-04 14:56:44 +11:00
.hgtags tag release.2010-11-02 2010-11-03 11:50:52 +11:00
AUTHORS A+C: add Chris Jones (individual CLA) 2010-11-04 10:30:13 -04:00
CONTRIBUTORS A+C: add Chris Jones (individual CLA) 2010-11-04 10:30:13 -04:00
favicon.ico add a favicon plus a couple of hi-res versions of gordon 2009-10-26 10:13:07 -07:00
LICENSE Add an explicit patent grant to the Go license. 2010-01-25 15:39:32 -08:00
README build: update, streamline documentation for new $GOBIN 2010-08-24 20:00:50 -04:00

This is the source code repository for the Go programming language.  

For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.

After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.

Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.

--

Binary Distribution Notes

If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README).  You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.

For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:

    export GOROOT=$HOME/go
    export PATH=$PATH:$GOROOT/bin

See doc/install.html for more details.