4. Symmetric Privacy Protocol (original) (raw)
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4. Symmetric Privacy Protocol
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4. Symmetric Privacy Protocol
4. Symmetric Privacy Protocol
This section describes the Symmetric Privacy Protocol. It provides for protection from disclosure of a received message. An appropriate portion of the message is encrypted according to a secret key known only to the originator and recipient of the message.
This protocol assumes the underlying mechanism is a symmetric encryption algorithm. In addition, the message to be encrypted must be protected according to the conventions of the Digest Authentication Protocol.
Recall from [1] that a SNMPv2 private management communication is represented by an ASN.1 value with the following syntax:
SnmpPrivMsg ::= [1] IMPLICIT SEQUENCE {
privDst
OBJECT IDENTIFIER,
privData
[1] IMPLICIT OCTET STRING
}
For each SnmpPrivMsg value that represents a SNMPv2 private management communication, the following statements are true:
- Its privDst component is called the privacy destination and identifies the SNMPv2 party to which the communication is directed.
- Its privData component is called the privacy data and represents the (possibly encrypted) serialization (according to the conventions of [13] and [12]) of a SNMPv2 authenticated management communication.
- 4.1. Generating a Message
- 4.2. Receiving a Message
Next: 4.1. Generating a Message
Connected: An Internet Encyclopedia
4. Symmetric Privacy Protocol