[[!comment format=mdwn
 username="joey"
 subject="""comment 3"""
 date="2019-01-11T20:52:31Z"
 content="""
A very big problem with this idea is that it would defeat git-annex's
protections against a SHA1 collision attack against git, which rely
on keys not containing user-supplied data.

If this were implemented, annex.securehashesonly would need to prohibit use 
of the resulting keys.
"""]]
