Alert Standard Format (ASF) Specification

Alert Standard Format (ASF) Specification v2.0 DMTF Document DSP0136
DSP0136 23 April 2003 Page 41 of 94
3.2.4.11 Open Session Request (83h)
A management console sends this RSSP message to the managed client to open a protected
session. The client responds with an Open Session Response (43h) message. Following the Mgt
Console Session ID field, this message contains one or more Authentication Payload proposals
and one or more Integrity Payload proposals. The format of this message’s Data section is as
follows:
Data
Byte(s)
Field Description
1-4
Mgt Console
Session ID
The Session ID selected by the Mgt Console for this new session. The
Bypass Session ID (see 3.2.3.1) is not valid in this context.
5-
variable
Authentication
Payload(s)
These payloads define the authentication algorithm proposals to be used to
establish a session
variable
Integrity
Payload(s)
These payloads define the integrity algorithm proposals to be used to
establish a session
A Payload is made up of two parts: a Payload Header and Payload Data. Two Payload Data
types are defined in this specification: Authentication Algorithm and Integrity Algorithm. The
Payload Header is defined in the following table.
Data
Byte(s)
Field Description
1 Payload Type Identifies the type of payload that follows.
00h No payload present (end of list)
01h Authentication algorithm payload
02h Integrity algorithm payload
03h-FFh Reserved for future definition by this specification
2 Reserved Reserved for future definition by this specification, set to 00h
3-4 Payload Length The total length in bytes of the payload including the header
The Authentication Algorithm payload data type is defined in the following table.
Data
Byte(s)
Field Description
1
Authentication
Algorithm
Defined authentication algorithms are:
00h Reserved for future definition by this specification
01h RAKP-HMAC-SHA1
02h-FFh Reserved for future definition by this specification
2-4 Reserved Reserved for future definition by this specification, set to 000000h.
The Integrity Algorithm payload data type is defined in the following table.
Data
Byte(s)
Field Description
1 Integrity Algorithm Defined integrity algorithms are:
00h Reserved for future definition by this specification
01h HMAC-SHA1-96
02h-FFh Reserved for future definition by this specification
2-4 Reserved Reserved for future definition by this specification, set to 000000h.
3.2.4.12 Close Session Request (84h)
A management console sends this RSSP message to the managed client to close a protected
session. The client responds with a Close Session Response (44h) message. Data Length for
the sent message is set to 00h, no additional data is sent.