Determine validation key from asc signature file #219
Merged
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Rather than expecting that downloaded files will be signed with a known key, simply use the key from the signature asc file.
The purpose of this validation isn't to validate authenticity. It is only to validate digest. Because the packages we download have been signed with multiple different keys over the years, it isn't possible to anticipate a default key and expect it to work for all downloads.
Fixes #216