Swauth uses token value as object name. Object names are logged in proxy
and object servers. Anybody with access to proxy/object server logs can
see token values. Attacker can use this token to access user's data in
Swift store. Instead of token, hashed token (with HASH_PATH_PREFIX and
HASH_PATH_SUFFIX) is used as object name now.
WARNING: In deployments without memcached this patch logs out all users
because tokens became invalid.
CVE-2017-16613
SecurityImpact
Closes-Bug: #1655781
Change-Id: I0d01e8e95400c82ef25f98e2d269532e83233c2c
70af798626