Open Stack

Hi, I'd like you to take a look at this patch for potential
SecurityImpact.
https://review.openstack.org/80178

Log:
commit d220c61e944262d251180902eee48abf6fbe696c
Author: Fei Long Wang <flwang at catalyst.net.nz>
Date:   Thu Jan 22 14:22:09 2015 +1300

    Make digest algorithm configurable
    
    It would be great to enhance Glance to use minimum of SHA2
    to do digital signature for FIPS compliance. Since in
    FIPS(FEDERAL INFORMATION PROCESSING STANDARDS) says the
    SHA-1 is not suitable for general-purpose digital signature
    applications (as specified in FIPS 186-3) that require 112
    bits of security. In the case of digital signatures, SHA-1
    does not provide the 112 bits of collision resistance needed
    to achieve the security strength.
    
    Now we're using hardcode 'sha1'. So this patch will make it
    configurable firstly and set the default value as sha1 in
    Kilo for smooth upgrade, which will be changed with sha256
    in next release(L).
    
    DocImpact
    UpgradeImapact
    SecurityImpact
    
    Closes-Bug: #1288545
    
    Change-Id: I9236cc85f4e9881ac1aa35d69bc6761a59c1b6c8