Comment 2 for bug 1975611

Reviewed: https://review.opendev.org/c/starlingx/upstream/+/843180
Committed: https://opendev.org/starlingx/upstream/commit/ccf9416b74a5409c59ad2a3e921fc07f729dd145
Submitter: "Zuul (22348)"
Branch: master

commit ccf9416b74a5409c59ad2a3e921fc07f729dd145
Author: Andy Ning <email address hidden>
Date: Tue May 24 12:15:06 2022 -0400

    Added patch to store barbican data in ascii format in DB

    Currently Barbican stores base64 encoded secret data (plugin_meta
    and cypher_text) as hex bytes in database. But when these data
    is retrieved from database for base64 decoding, it is not
    converted back to ascii format, causing the decoding failed with
    error:

    binascii.Error: Invalid base64-encoded string: number of data
    characters (273) cannot be 1 more than a multiple of 4.

    This commit added a patch to Barbican to store these data in ascii
    format in the database so they can be decoded when retrieved.

    Test Plan for Debian:
    PASS: trigger mtcAgent to store a password secret in Barbican by
          system host-update controller-0 bm_type=dynamic bm_ip=<bm IP>
          bm_username=root bm_password=root.
    PASS: retrieve the secret with "--payload" option by
          openstack secret get <secret URL> --payload.
    PASS: AIO-SX deployment and unlock.

    Closes-Bug: 1975611
    Signed-off-by: Andy Ning <email address hidden>
    Change-Id: I1c2fa112caa8700b1c21130aec041fd7d2a52a19