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Redhat 8 also does not ship the libsodium library at all. Libsodium is used by PHP (amongst others) to provide encryption abilities - and we use this in Open-AudIT.
https://access.redhat.com/solutions/5284161
So, by default Open-AudIT 5.x uses the Remi repo for Redhat to get updated versions of PHP and a suitable libsodium.
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