[AGENT++] SNMPV3 USM based Key change Queries

[Anurag Jain]

Hello All,

I had had the following questions regarding the snmp v3 usm 
class/implementation :

1 .  Does the USM inteface of snmp++ provide a method to  take keys as input 
instead of passwords for auth and privacy?
2. Does the usm interface localize the keys by default ?

Does the following use case sound correct for updating keys i.e key change  
:

1. User supplies to Manager  (Manager is built using the snmp++ library )  a 
set of new auth and privacy  passwords
2 . The Manager calls:
  a.USM::key_update_prepare with a new password  followed by
  b.Manager performs a set on the SNMP Agent with the out param 'pdu'
  c.USM::key_update_commit

   In this case does USM support input of keys directly instead of 
passwords?

3.Communication is re-stablished.

Thanks
-Anurag

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