RFC 2752 (rfc2752) - Page 3 of 17
Identity Representation for RSVP
Alternative Format: Original Text Document
RFC 2752 Identity Representation for RSVP January 2000
3.2 Authentication Data Policy Element
In this section, we describe a policy element (PE) called
authentication data (AUTH_DATA). AUTH_DATA policy element contains a
list of authentication attributes.
+-------------+-------------+-------------+-------------+
| Length | P-Type = Identity Type |
+-------------+-------------+-------------+-------------+
// Authentication Attribute List //
+-------------------------------------------------------+
Length
The length of the policy element (including the Length and P-
Type) is in number of octets (MUST be a multiple of 4) and
indicates the end of the authentication attribute list.
P-Type (Identity Type)
Type of identity information contained in this Policy Element
supplied as the Policy element type (P-type). The Internet
Assigned Numbers Authority (IANA) acts as a registry for policy
element types for identity as described in the [POL-EXT].
Initially, the registry contains the following P-Types for
identity:
1 AUTH_USER Authentication scheme to identify users
2 AUTH_APP Authentication scheme to identify
applications
Authentication Attribute List
Authentication attributes contain information specific to
authentication method and type of AUTH_DATA. The policy element
provides the mechanism for grouping a collection of
authentication attributes.
3.3 Authentication Attributes
Authentication attributes MUST be encoded as a multiple of 4 octets,
attributes that are not a multiple of 4 octets long MUST be padded to
a 4-octet boundary.
+--------+--------+--------+--------+
| Length | A-Type |SubType |
+--------+--------+--------+--------+
| Value ...
+--------+--------+--------+--------+
Yadav, et al. Standards Track
