SNMPv3 AES192 AES256 not work

[efancier-cn]

I am using SnmpB(windows exe application) and Pysnmp with Python3, I created an usm as following:

master := GoSNMPServer.MasterAgent{
    Logger: GoSNMPServer.NewDefaultLogger(),
    SecurityConfig: GoSNMPServer.SecurityConfig{
        AuthoritativeEngineBoots: 0,
        Users: []gosnmp.UsmSecurityParameters{
            {
                UserName:                 "admin", //c.String("v3Username"),
                AuthenticationProtocol:   gosnmp.MD5,
                PrivacyProtocol:          gosnmp.AES,
                AuthenticationPassphrase: "12345678", //c.String("v3AuthenticationPassphrase"),
                PrivacyPassphrase:        "12345678", //c.String("v3PrivacyPassphrase"),
            },
        },
    },
    SubAgents: []*GoSNMPServer.SubAgent{
        {
            //CommunityIDs: []string{c.String("community")},
            CommunityIDs: []string{"public"},
            OIDs:         mibImps.All(),
        },
    },
}

the snmp agent work well, while if change priv protocol to AES192 or AES256, SnmpB and Pysnmp can not get correct data, wireshark shows malf package. Tried AES192C and AES256C the result is the same.

[efancier-cn]

Did a little search and found related problem - GoSNMPServer refer to the slayercat/gosnmp module ( v 1.24), which forked from gosnmp/gosnmp ( v1.30.0 as last release) - Can we update the gosnmp module used by GoSNMPServer ?

[adenis78]

It's not so hard to embed new version. I did so.

[slayercat]

I believe that with the release of the new version, this issue has been resolved. Your feedback is welcome. If the problem persists, please feel free to reopen this issue or create a new one.