No. 

artifacts.jar and content.jar do not need to be signed. (Nothing checks if 
have been tampered with). 

Its a little less important that they are, since they are primarily data 
that's read from server (and, ideally not even 'mirrored') ... they are 
not something that's downloaded and executed ... though I'm sure someone 
could in theory find some way to abuse it (but, by then they'd have access 
to the server, and I'm sure could do more interesting things :) 

(Last I asked about it ... 3 or 5 years ago, the response I got was 
basically "guess we could, but currently do not"). 





From:   Jeff Johnston <jjohn...@redhat.com>
To:     Cross project issues <cross-project-issues-dev@eclipse.org>, 
Date:   09/13/2013 01:44 PM
Subject:        [cross-project-issues-dev] Change in signing plug-in 
results in      repository changes
Sent by:        cross-project-issues-dev-boun...@eclipse.org



In Linux Tools, we have switched over to use the 
eclipse-jarsigner-plugin instead of eclipse-signing-maven-plugin.

We have noted that in past builds, we ended up getting a top-level 
META-INF directory with signing info for artifacts.jar when we used the 
old eclipse-signing-maven-plugin.

Is this an issue?  Does anything use this info to verify that 
artifacts.jar is not tampered with?

-- Jeff J.
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