tree 42eef672cfce5820d1587b91db3fdfe835d8387b
parent 6d321f5c9956806e46e168e3fb3f4a07a88a996d
author Erick Tryzelaar <etryzelaar@google.com> 1555429269 -0700
committer Erick Tryzelaar <etryzelaar@google.com> 1558481806 -0700

G2: support both TUF 0.9 and 1.0 key ids

This extends go-tuf to return both the TUF-0.9 style key ids
(which contain the key type and the key value), and the TUF-1.0
key ids (which also contains the signing sheme). This results
in doubling the key ids in metadata, and doubling the number of
signatures signing the metadata. The signed metadata just reuses
the signature for both key ids, because hasn't changed.

Note that this adds support for parsing go-tuf 1.0 metadata, since it
can parse TUF 1.0 keyids.

Change-Id: I6eb5dd9420696916924db87d0cd913d311ca6526