Matthew Oliver e84ed57a72 py3: port cli form_signature and unit tests
This patch ports the form_signature cli `swift-form-signature`
and it's corrisponding tests to py3.

In essence in Py3 the HMAC function expects binary strings.

Change-Id: I5dded4ceb80f0cc595403775e8f9c17873e1e37b
2018-03-13 06:19:44 +00:00
..
2017-05-11 01:39:14 -06:00