Open Stack

** Changed in: heat
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1251647

Title:
  Heat does home-grown symmetric crypto (AES-CFB) for no apparent reason

Status in Orchestration API (Heat):
  In Progress
Status in OpenStack Security Advisories:
  Invalid

Bug description:
  In the following commit:

  https://github.com/openstack/heat/commit/58cd52624b50476ed5ed1c5c0ba7cb1b4d7ba66d

  ... a decision was introduced to encrypt authentication information
  using unauthenticated AES-CFB.

  There's a few things I don't like about that commit, but suffice to
  say that  heat/engine/auth.py should probably not be a place where
  symmetric crypto decisions are made.

  I've been told that there's a new public API for symmetric encryption,
  SymmetricCrypto that lives in  openstack/common/crypto/utils.py:
  https://github.com/openstack/oslo-
  incubator/blob/master/openstack/common/crypto/utils.py#L99

  I think that also gets a few things wrong, but at the very least Heat
  should use a centralized thing for encrypting stuff.

  (I'd love to complain about and work on SymmetricCrypto too, but
  that's not this ticket :)

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