PPT Slide
- Authentication key equivalent to DEK in PEM or private key in PGP
- Authentication key generated using user password and SNMP engine id
- Authentication key may be used to encrypt message
- USM prepares the whole message including scoped PDU
- HMAC, equivalent of signature in PEM and PGP, generated using authentication key and the whole message
- Authentication module provided with authentication key and HMAC to process incoming message
Network Management: Principles and Practice