Open Stack

Hi, I'd like you to take a look at this patch for potential
SecurityImpact.
https://review.openstack.org/117372

Log:
commit a6848b4667ee4f2ee1e2b6642a7ba36aabefdbd0
Author: Brant Knudson <bknudson at us.ibm.com>
Date:   Wed Aug 27 17:53:41 2014 -0500

    token signing support alternative message digest
    
    The functions for creating signed tokens in common.cms always used
    sha256 for the message digest. This might be inadequate in the future
    so the digest algorithm shouldn't be hard-coded. A parameter is added
    to allow choosing a different digest algorithm.
    
    SecurityImpact
    
    Change-Id: Ie19d093d0494443ce4cd880ae1f92dffd5c361ef
    Related-Bug: #1362343