paycheck: use base64 encoding for SHA256 hashes throughout
Turns out we were using base64 when adding SHA256 data to a payload
report, but intermittently using hex encoding in error messages. This is
now fixed.
BUG=None
TEST=No mention of hex encoding in the code
TEST=gpylinted correctly
TEST=Passes unit tests
Change-Id: Id2dc2fcd154d4647cc1a076579dde7a789c09e40
Reviewed-on: https://gerrit.chromium.org/gerrit/50104
Reviewed-by: Gilad Arnold <garnold@chromium.org>
Tested-by: Gilad Arnold <garnold@chromium.org>
Commit-Queue: David James <davidjames@chromium.org>
2 files changed
