Convert SNMP traps from v1 to v3 -

i'm trying convert snmp v1 traps v3. i've followed this discussion it's vague. i've looked here without success.

to more clear: have centos 6 station, net-snmp 5.5 on it. need generate v1 traps, receive them, convert them v3, forward them.

regarding first guide, managed far:

master:

snmpd  -lo --master=agentx --agentxsocket=tcp:192.168.58.64:42000 udp:1161 

listen:

snmpwalk -v3 -u snmpv3user -a snmpv3pass -a md5 -l authnopriv 192.168.58.64:1161 

later edit:

i have made progress, able run snmpd master, connect snmptrapd agent it, have v1 traps mechanism functional.

i did following:

    in order snmptrapd connected subagent snmpd need following:  ###1  edit /etc/hosts.allow , add  snmpd: $(your_ip) smptrapd: $(your_ip)  important because snmptrapd fails silently if rejected tcp wrap.  ###2 edit /etc/snmp/snmpd.conf , add @ bottom of other com2sec directives.  com2sec infwnet  $(your_ip)  your-community    add these lines   group myrogroup v1         infwnet group myrogroup v2c        infwnet group myrogroup usm        infwnet  under   "# second, map security names group names:"  add view @ bottom of other views view    included  .1                               80    add group acces @ bottom of other group access directives  access myrogroup  ""            noauth    exact     none   none   add  line well:  master agentx  ###3 test this:   snmpwalk -v1 -c your_community $(your_ip) .   ###4 create following trap test example:   touch /usr/share/snmp/mibs/ucd-trap-test-mib.txt   ###5 copy paste text below it:    ucd-trap-test-mib definitions ::= begin        imports ucdexperimental ucd-snmp-mib;   demotraps object identifier ::= { ucdexperimental 990 }   demotrap trap-type        enterprise demotraps        variables { syslocation }        description "an example of smiv1 trap"        ::= 17   end   ###6 edit /etc/sysconfig/snmptrapd (not /etc/default/snmptrapd !!)  replace options this:    options="-lsd -m -m /usr/share/snmp/mibs  -p /var/run/snmptrapd.pid"  ###7 test   snmptrap -v 1 -c public $(your_ip) ucd-trap-test-mib::demotraps "" 6 17 "" snmpv2-mib::syslocation.0 s "just here" 

now need find way convert them v3 , read/receive them remote snmpd