[ovs-git] [openvswitch/ovs] 1134de: ovs-bugtool: Switch from MD5 to SHA-256.

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/openvswitch/ovs
  Commit: 1134de887b4d7ffa4d77de38cc98db7025bbb9d2
      https://github.com/openvswitch/ovs/commit/1134de887b4d7ffa4d77de38cc98db7025bbb9d2
  Author: Ben Pfaff <blp at ovn.org>
  Date:   2016-08-11 (Thu, 11 Aug 2016)

  Changed paths:
    M utilities/bugtool/ovs-bugtool.in

  Log Message:
  -----------
  ovs-bugtool: Switch from MD5 to SHA-256.

While going through a FIPS certification process we discovered that
ovs-bugtool uses MD5 to identify the contents of files.  FIPS doesn't allow
use of the obsolete and broken MD5 algorithm, so this commit switches to
SHA-256.

In a way, this is a silly requirement.  ovs-bugtool only uses MD5 to
identify file content, mostly to ensure that the contents of the bug report
have not been corrupted.  MD5 is perfectly adequate for that purpose; in
fact a 16-bit CRC would probably be adequate.  On the other hand, there is
basically no cost and no disadvantage to switching to SHA-256, so why not
do it?  That's why I think that this is a reasonable change.

VMware-BZ: #1708786
Signed-off-by: Ben Pfaff <blp at ovn.org>
Acked-by: Ryan Moats <rmoats at us.ibm.com>