# HG changeset patch
# User Gregory Szorc <gregory.szorc@gmail.com>
# Date 1464465448 25200
# Node ID 1eff545cef5245a2adc5e118cbee8287b6fca635
# Parent  70bc9912d83d29242f53847176719cb89ab43502
util: add sha256

Upcoming patches will teach host fingerprint checking to verify
non-SHA1 fingerprints.

Many x509 certificates these days are SHA-256. And modern browsers
often display the SHA-256 fingerprint for certificates. Since
SHA-256 fingerprints are highly visible and easy to obtain, we
want to support them for fingerprint pinning. So add SHA-256
support to util.

I did not add SHA-256 to DIGESTS and DIGESTS_BY_STRENGTH because
this will advertise the algorithm on the wire protocol. I wasn't
sure if that would be appropriate. I'm playing it safe by leaving
it out for now.

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -65,6 +65,7 @@
 
 md5 = hashlib.md5
 sha1 = hashlib.sha1
+sha256 = hashlib.sha256
 sha512 = hashlib.sha512
 _ = i18n._