Issue with net-snmp v3 for authPriv for AES - snmp

Question

I am creating a c++ project using the net-snmp libraries i build, I was able to interface with my hardware via SNMP v2c as well as SNMP v3 (authNoPriv). However, this was unsuccessful when I tried using authPriv, is there any advice on this?
What I suspect is that net-snmp does not support AES.
When i tried to run net-snmp directly, I see for the privacy protocol there's only the option for DES. So I would like to confirm does net-snmp supports both AES128 and DES privacy protocol?

Answer 1

For authNoPriv, I was returned with the Authentication failure when I used SHA-1 Authentication Protocol
For authPriv, I couldn't establish any connection with the SNMP hardware.
I suspect there is something wrong in my code, as there was no issue with authNoPriv with MD5 Authentication Protocol, but the above errors occur when I configured to the respective the security protocol.
// Definitions
const char * user = "snmpuser";
const char * our_v3_passphrase = "passphrase";
const char * our_v3_privphrase = "privphrase";
struct snmp_session session;
SOCK_STARTUP;
// Initialize the SNMP library
snmp_sess_init(&session);
session.peername = _strdup(argv[1])
// set the SNMP version number
session.version = SNMP_VERSION_3;
session.securityNameLen = strlen(session.securityName);
// set the security level
session.securityLevel = SNMP_SEC_LEVEL_AUTHPRIV; // SNMP_SEC_LEVEL_AUTHNOPRIV (for authNoPriv)
// set the authentication protocol
session.securityAuthProto = usmHMACMD5AuthProtocol; // usmHMACSHA1AuthProtocol
session.securityAuthProtoLen = USM_AUTH_PROTO_MD5_LEN; // USM_AUTH_PROTO_SHA_LEN
session.securityAuthKeyLen = USM_AUTH_KU_LEN;
// set authentication key to a hashed version of passphrase
if (generate_Ku(session.securityAuthProto, session.securityAuthProtoLen, (u_char *)our_v3_passphrase, strlen(our_v3_passphrase), session.securityAuthKey, &session.securityAuthKeyLen) != SNMPERR_SUCCESS) {
snmp_perror(argv[0]);
snmp_log(LOG_ERR, "Error generating Ku from authentication passphrase. \n");
SOCK_CLEANUP;
exit(1);
}
// set the privacy protocol
session.securityPrivProto = usmAES128PrivProtocol; // usmDESPrivProtocol
session.securityAuthProtoLen = USM_PRIV_PROTO_AES128_LEN; // USM_PRIV_PROTO_DES_LEN
session.securityAuthKeyLen = USM_PRIV_KU_LEN;
// set privacy key to a hashed version of privphrase
if (generate_Ku(session.securityAuthProto, session.securityAuthProtoLen, (u_char *)our_v3_privphrase, strlen(our_v3_privphrase), session.securityPrivKey, &session.securityPrivKeyLen) != SNMPERR_SUCCESS) {
snmp_perror(argv[0]);
snmp_log(LOG_ERR, "Error generating Ku from authentication passphrase. \n");
SOCK_CLEANUP;
exit(1);
}