Issue 768: Update audit log to use SHA-256 or better

issues
Status:open
Assigned To:ritach
Type:Todo
Area:Skyline
Priority:3
Milestone:21.1
Opened:2021-01-26 by Brendan MacLean
Changed:2021-01-26 by Brendan MacLean
Resolved:
Resolution:
Closed:
2021-01-26 Brendan MacLean
Title»Update audit log to use SHA-256 or better
Assigned To»ritach
Type»Todo
Area»Skyline
Priority»3
Milestone»21.1
I was hoping this would happen along with the fix to change all of the hashes to a new scheme which protects against duplication, but I apparently didn't make that clear to everyone. This issue was brought up during review of the original paper that we chose to use SHA-1. Since we are already changing every hash in the audit log between 20.2 and 21.1, we should also do this now, switching to SHA-256 or -512 or some best modern SHA variant.