after testing (with net-snmp-utils 5.9.3), I have no problem with snmpv3 and SHA/AES.
On my testing host, snmpd server (OpenBSD):
- User:
user1 - auth: AES with
password123 - priv: AES with
321drowssap
From XCP-ng 8.3, with net-snmp-utils 5.9.3:
$ snmpbulkwalk -v3 -a SHA -A password123 -l authPriv -x AES -X 321drowssap -u user1 192.168.1.80
so the net-snmp client itself seems fine with SHA/AES.
could you share more elements ?