RFC 2203 (rfc2203) - Page 1 of 23
RPCSEC_GSS Protocol Specification
Alternative Format: Original Text Document
Network Working Group M. Eisler
Request for Comments: 2203 A. Chiu
Category: Standards Track L. Ling
September 1997
RPCSEC_GSS Protocol Specification
Status of this Memo
This document specifies an Internet standards track protocol for the
Internet community, and requests discussion and suggestions for
improvements. Please refer to the current edition of the "Internet
Official Protocol Standards" (STD 1) for the standardization state
and status of this protocol. Distribution of this memo is unlimited.
Abstract
This memo describes an ONC/RPC security flavor that allows RPC
protocols to access the Generic Security Services Application
Programming Interface (referred to henceforth as GSS-API).
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The ONC RPC Message Protocol . . . . . . . . . . . . . . . . . 2
3. Flavor Number Assignment . . . . . . . . . . . . . . . . . . . 3
4. New auth_stat Values . . . . . . . . . . . . . . . . . . . . . 3
5. Elements of the RPCSEC_GSS Security Protocol . . . . . . . . . 3
5.1. Version Selection . . . . . . . . . . . . . . . . . . . . . 5
5.2. Context Creation . . . . . . . . . . . . . . . . . . . . . . 5
5.2.1. Mechanism and QOP Selection . . . . . . . . . . . . . . . 5
5.2.2. Context Creation Requests . . . . . . . . . . . . . . . . 6
5.2.3. Context Creation Responses . . . . . . . . . . . . . . . . 8
5.2.3.1. Context Creation Response - Successful Acceptance . . . 8
5.2.3.1.1. Client Processing of Successful Context Creation
Responses . . . . . . . . . . . . . . . . . . . . . . 9
5.2.3.2. Context Creation Response - Unsuccessful Cases . . . . . 9
5.3. RPC Data Exchange . . . . . . . . . . . . . . . . . . . . 10
5.3.1. RPC Request Header . . . . . . . . . . . . . . . . . . . 10
5.3.2. RPC Request Data . . . . . . . . . . . . . . . . . . . . 11
5.3.2.1. RPC Request Data - No Data Integrity . . . . . . . . . 11
5.3.2.2. RPC Request Data - With Data Integrity . . . . . . . . 11
5.3.2.3. RPC Request Data - With Data Privacy . . . . . . . . . 12
5.3.3. Server Processing of RPC Data Requests . . . . . . . . . 12
5.3.3.1. Context Management . . . . . . . . . . . . . . . . . . 12
5.3.3.2. Server Reply - Request Accepted . . . . . . . . . . . 14
5.3.3.3. Server Reply - Request Denied . . . . . . . . . . . . 15
Eisler, et. al. Standards Track