usm DH User Own Priv Key Change

1.3.6.1.3.101.1.1.2.1.4

The object used to change the agent's own Privacy Key using a Diffie-Hellman key exchange. The right-most n bits of the shared secret 'sk', where 'n' is the number of bits required for the protocol defined by usmUserPrivProtocol, are installed as the operational privacy key for this row after a successful SET.