ISO/IEC 10021-2:1990

Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture

Technologies de l'information — Communication de texte — Systèmes d'échange de texte en mode message — Partie 2: Architecture générale

General Information

• Status: Withdrawn
• Publication Date: 12-Dec-1990
• Withdrawal Date: 12-Dec-1990
• ICS: 35.240.20 - IT applications in office work
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 9599 - Withdrawal of International Standard
• Start Date: 08-Dec-2003
• Completion Date: 30-Oct-2025

Relations

• Amended By: ISO/IEC 10021-2:1990/Amd 2:1994 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Amendment 2
• Effective Date: 06-Jun-2022
• Amended By: ISO/IEC 10021-2:1990/Amd 1:1994 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Amendment 1
• Effective Date: 06-Jun-2022
• Corrected By: ISO/IEC 10021-2:1990/Cor 4:1992 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 4
• Effective Date: 06-Jun-2022
• Corrected By: ISO/IEC 10021-2:1990/Cor 3:1992 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 3
• Effective Date: 06-Jun-2022
• Corrected By: ISO/IEC 10021-2:1990/Cor 2:1991 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 2
• Effective Date: 06-Jun-2022
• Revised: ISO/IEC 10021-2:1996 - Information technology - Message Handling Systems (MHS): Overall architecture
• Effective Date: 15-Apr-2008
• Parent: ISO/IEC 10021-2:1990/Amd 1:1994 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Amendment 1
• Effective Date: 15-Apr-2008
• Parent: ISO/IEC 10021-2:1990/Amd 2:1994 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Amendment 2
• Effective Date: 15-Apr-2008
• Parent: ISO/IEC 10021-2:1990/Cor 3:1992 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 3
• Effective Date: 15-Apr-2008
• Parent: ISO/IEC 10021-2:1990/Cor 4:1992 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 4
• Effective Date: 15-Apr-2008
• Parent: ISO/IEC 10021-2:1990/Cor 2:1991 - Information Technology - Text Communication - Message-Oriented Text Interchange Systems (MOTIS) - Part 2: Overall Architecture - Technical Corrigendum 2
• Effective Date: 15-Apr-2008

Standards Content (Sample)

ISO/IEC
INTER NATIONAL
10021-2
STANDARD
First edition
1990-12-01
Information technology - Text Communication
- Message-Oriented Text Interchange Systems
(MOTIS) -
Part 2:
Overall Architecture
Technologies de I'in formation - Communication de texte - Systhmes d'&change
de texte en mode message -
Partie 2: Architecture g&n&raIe
Reference number
ISO/IEC 10021-2 : 1990 (E)
ISO/IEC 10021-2 : 1990 (E)
Contents
Foreword . ix
Introduction . x
Section one . Introduction 1
...........................................................................
Scope . 1
Normative references . 2
2.1 Open Systems Interconnection . 3
2.2 Directory Systems . 3
2.3 Message Handling Systems . 4
2.4 Country Codes . 4
Definitions . 4
3.1 Open Systems Interconnection . 4
3.2 Directory Systems . 6
3.3 Message Handling Systems . 6
Abbreviations . 7
Conventions . 7
5.1 ASN.1 . 7
5.2 Grade . 7
5.3 Terms . 7
Section two . Abstract Models . 8
6 Overview . 8
7 Functional Model . 8
I I .
7.1 Primary Functional Objects . 8 .
7.1.1 The Message Handling System . 9
7.1.2 Users . 9
7.1.3 Distribution Lists . 9
7.2 Secondary Functional Objects . 10
7.2.1 The Message Transfer System . IO
7.2.2 User Agents . 11
7.2.3 Message Stores . 11
7.2.4 Access Units . 11
7.3 Tertiary Functional Objects . 11
7.3.1 Message Transfer Agents . 12
7.4 Selected AU Types . 12
7.4.1 Physical Delivery . 12
7.4.2 Telematic . 13
7.4.3 Telex . 13
C ISOilEC 1990
All rights reserved . No part of this publication may be reproduced or utilized in any form or by any
means. electronic or mechanical. including photocopying and microfilm. without permission in
writing from the publisher .
International Organization for Standardization
Case postale 56 CH-1211 Genhve 20 Switzerland
Printed in Switzerland
..
B
ISO/IEC 10021-2 : 1990 (E)
Information Model . 13
8.1 Messages . 13
L
................................................................................................................................................ 14
8.2 Probes
8.3 Reports . 14
9 Operational Model . 15
9.1 Transmittal . 15
9.2 Transmittal Roles . 16
9.3 Transmittal Steps . 17
9.3.1 Origination . 17
9.3.2 Submission . 18
9.3.3 Import . 18
9.3.4 Transfer. . 18
9.3.5 Export . 18
9.3.6 Delivery . 19
9.3.7 Retrieval . 19
9.3.8 Receipt . 19
...... 9.4 Transmittal Events ........................................................................................................................... 19
9.4.1 Splitting . 20
...
9.4.2 Joining . 20
9.4.3 Name Resolution . 20
9.4.4 DL Expansion . 20
9.4.5 Redirection . 21
9.4.6 Conversion . 21
9.4.7 Non-delivery . 21
9.4.8 Non-affirmation . 21
9.4.9 Affirmation . 21
9.4.10 Routing . 22
10 Security Model . 22
1 O . 1 Security Policies . 23
10.2 Security Services . 23
10.2.1 Origin Authentication Security Services . 24
Data Origin Authentication Security Services . 24
10.2.1.1
10.2.1.2 Proof of Submission Security Service . 25
Proof of Delivery Security Service . 25
10.2.1.3
10.2.2 Secure Access Management Security Service . 25
Peer Entity Authentication Security Service . 25
10.2.2.1
10.2.2.2 Security Context Security Service . 25
10.2.3 Data Confidentiality Security Services . 25
'E -s*up
Connection Confidentiality Security Service . 26
10.2.3.1
10.2.3.2 Content Confidentiality Security Service . 26
Message Flow Confidentiality Security Service . 26
10.2.3.3
10.2.4 Data Integrity Security Services . 26
Connection Integrity Security Service . 26
10.2.4.1
10.2.4.2 Content Integrity Security Service . 26
10.2.4.3 Message Sequence Integrity Security Service . 27
10.2.5 Non-Repudiation Security Services . 27
10.2.5.1 Non-repudiation of Origin Security Service . 27
10.2.5.2 Non-Repudiation of Submission Security Service . 27
.. .
...
10.2.5.3 Non-Repudiation of Delivery Security Service . 28
10.2.6
Message Security Labelling Security Service . 28
10.2.7 Security Management Services . 28
10.2.7.1 Change Credentials Security Service . 28
10.2.7.2 Register Security Service . 28
10.2.7.3 MS-Register Security Service . 28
10.3 Security Elements . 28
10.3.1 Authentication Security Elements . 28
10.3.1.1 Authentication Exchange Security Element . 29
10.3.1.2 Data Origin Authentication Security Elements . 29
10.3.1.3 Proof of Submission Security Element . 30
10.3.1.4 Proof of Delivery Security Element . 30
Secure Access Management Security Elements . 30
10.3.2
10.3.2.1 Security Context Security Element . 30
...
ISO/IEC 10021-2 : 1990 (E)
10.3.2.2 Register Security Element . 31
10.3.2.3 MS-Register Security Element . 31
Data Confidentiality Security Elements . 31
10.3.3
10.3.3.1 Content Confidentiality Security Element . 31
10.3.3.2 Message Argument Confidentiality Security Element . 31
Data Integrity Security Elements . 31
10.3.4
10.3.4.1 Content Integrity Security Element . 32
10.3.4.2 Message Argument Integrity Security Element . 32
10.3.4.3 Message Sequence Integrity Security Element . 32
Non-repudiation Security Elements . 32
10.3.5
Security Label Security Elements . 32
10.3.6
10.3.6.1 Message Security Label Security Element . 32
Security Management Security Elements . 33
10.3.7
10.3.7.1 Change Credentials Security Element . 33
Double Enveloping Technique . 33
10.3.8
Section three . Configurations . 34
1 1 Overview . 34
12 Functional Configurations . 34
Regarding the Directory . 34
12.1
Regarding the Message Store . 34
12.2
13 Physical Configurations . 35
13.1 Messaging Systems . 35
13.1.1 Access Systems . 37
13.1.2 Storage Systems . 37
13.1.3 Access and Storage Systems . 37
13.1.4 Transfer Systems . 37
13.1.5 Access and Transfer Systems . 37
13.1.6 Storage and Transfer Systems . 37
13.1.7 Access, Storage, and Transfer Systems . 37
13.2 Representative Configurations . 38
13.2.1 Fully Centralized . 38
13.2.2 Centralized Message Transfer and Storage . 38
13.2.3 Centralized Message Transfer . 39
13.2.4 Fully Distributed . 39
3 g .
14 Organizational Configurations .
14.1 Management Domains . 39
14.1.1 Administration Management Domains . 39
Private Management Domains . 39
14.1.2
14.2 Representative Configurations . 39
14.2.1 Fully Centralized . 40
14.2.2 Directly Connected . 40
14.2.3 Indirectly Connected . 40
15 The Global MHS . 40
Section four . Naming. Addressing. and Routing . 42
16 Overview . 42
17 Naming . 42
17.1 Directory Names . 42
17.2 O/R Names . 42
18 Addressing . 43
18.1 Attribute Lists . 43
18.2 Character Sets . 44
iv
ISO/IEC 10021-2 : 1990 (E)
1 8.3 Standard Attributes . 44
18.3.1 Administration-domain-name . 45
18.3.2 Common-name . 46
18.3.3 Country-name . 46
18.3.4 Extension-postal-O/R-address-components . 46
18.3.5 Extension-physical-delivery-address-components . 46
18.3.6 Local-postal-attributes . 46
18.3.7 Network-address . 46
18.3.8 Numeric-user-identifier . 47
18.3.9 Organization-name . 47
18.3.10 Organizational-unit-names . 47
18.3.1 1 Pds-name . 47
18.3.12 Personal-name . 47
18.3.13 Physical-delivery-country-name . 48
18.3.14 Physical-delivery-office-name . 48
18.3.15 Physical-delivery-office-number . 48
18.3.16 Physical-delivery-organization-name . 48
18.3.17 Physical-delivery-personal-name . 48
18.3.18 Post-office-box-address . 48
*. .
18.3.19 Postal-code . 48
..
18.3.20 Poste-restante-address . 49
18.3.21 Private-domain-name . 49
18.3.22 Street-address . 49
1 8.3.23 Terminal- identifier . 49
18.3.24 Terminal-type . 49
18.3.25 Unformatted-postal-address . 49
18.3.26 Unique-postal-name . 49
18.4 Attribute List Equivalence . 50
18.5 O/R Address Forms . 50
18.5.1 Mnemonic O/R Address . 51
18.5.2 Numeric O/R Address . 52
18.5.3 Postal O/R Address . 52
18.5.4 Terminal O/R Address . 52
18.6 Conditional Attributes . 53
19 Routing . 53
Section five . Use of the Directory . 55
i .i 4 20 Overview . 55
21 Authentication . 55
22 Name Resolution . 55
23 DL Expansion . 55
24 Capability Assessment . 56
..
. .f .
Section six . OS1 Realization . 57
25 Overview . 57
26 Application Service Elements . 57
26.1 The ASE Concept . 57
26.2 Symmetric and Asymmetric ASES . 58
26.3 Message Handling ASES . 60
26.3.1 Message Transfer . 61
26.3.2 Message Submission . 61
26.3.3 Message Delivery . 61
26.3.4 Message Retrieval . 61
V
ISO/IEC 10021-2 : 1990 (E)
26.3.5 Message Administration . 61
26.4 Supporting ASES . 61
26.4.1 Remote Operations . 62
26.4.2 Reliable Transfer . 62
26.4.3 Association Control . 62
27 Application Contexts . 62
Annexes . 64
Directory Object Classes and Attributes . 64
A
A.l Object Classes . 64
A.1.1 MHS Distribution List . 64
A . 1.2 MHS Message Store . 64
A.1.3 MHS Message Transfer Agent . 65
A.1.4 MHS User . 65
A.1.5 MHS User Agent . 65
A.2 Attributes . 65
A.2.1 MHS Deliverable Content Length . 66
A.2.2 MHS Deliverable Content Types . 66
A.2.3 MHS Deliverable EITs . 66
A.2.4 MHS DL Members . 66
A.2.5 MHS DL Submit Permissions . 66
A.2.6 MHS Message Store . 67
A.2.7 MHS O/R Addresses . 67
A.2.8 MHS Preferred Delivery Methods . 67
A.2.9 MHS Supported Automatic Actions . 67
A.2.10 MHS Supported Content Types . 67
A.2.1 1 MHS Supported Optional Attributes . 68
A.3 Attribute Syntaxes . 68
A.3.1 MHS DL Submit Permission . 68
A.3.2 MHS O/R Address . 69
A.3.3 MHS O/R Name . 69
B Reference Definition of Object Identifiers . 70
C
Reference Definition of Directory Object Classes and Attributes . 72
D Security Threats . 76 .
**.>
D . 1
Masquerade . 77
D.2 Message Sequencing . 78
D.3 Modification of Information . 78
D.4 Denial of Service . 78
D.5 Repudiation . 79
D.6 Leakage of Information . 79
D.7 Other Threats . 79
E Provision of Security Services in ISO/IEC 10021-1 . 80
F
Differences Between ISO/IEC 10021-2 and CCITT Recommendation X.402 . 81
G Index . 82
vi
I
ISO/IEC 10021-2 : 1990 (E)
List of Figures
The Message Handling Environment . 9
2 The Message Handling System . 10
..I
U
3 The Message Transfer System . 12
4 A Message’s Envelope and Content . 14
5 The Information Flow of Transmittal . 16
6 Simplified MHS Functional Model . 24
7 Functional Configurations Regarding the MS . 35
. ^
8 Messaging System Types . 36
9 Representative Physical Configurations . 38
10 Representative Organizational Configurations . 40
11 The Global MHS . 41
12 The ASE Concept . 58
13 Symmetric and Asymmetric ASEs . 59
14 Terminology for Asymmetric ASEs . 60
15 Multiple Asymmetric ASEs . 60
... *
..
vii
ISO/IEC 10021-2 : 1990 (E)
List of Tables
Specifications for Message Handling Systems . 1
Specifications for Directories . 2
Specifications for MHS Foundations . 2
Conveyable Information Objects . 13
Transmittal Steps . 17
Transmittal Events . 20
Message Transfer Security Services . 23
Messaging Systems . -36
Standard Attributes . 45
10 Forms of O/R Address . 51
11 Message Handling ASEs . 61
12 Supporting ASEs . 62
D.l Use of MHS Security Services . 77
E.1 MHS Security Service Provision . 80
...
Vlll
I
ISO/IEC 10021-2 : 1990 (E)
Foreword
IS0 (the International Organization for Standardization) and IEC (the International
Electrotechnical Commission) form the specialized system for worldwide standardiz-
ation. National bodies that are members of IS0 or IEC participate in the development
of International Standards through technical committees established by the respective
organization to deal with particular fields of technical activity. IS0 and IEC technical
committees collaborate in fields of mutual interest. Other international organizations,
governmental and non-governmental, in liaison with IS0 and IEC, also take part in the
work.
In the field of information technology, IS0 and IEC have established a joint technical
committee, ISOIIEC JTC 1. Draft International Standards adopted by the joint
technical committee are circulated to national bodies for voting. Publication as an
International Standard requires approval by at least 75 '70 of the national bodies casting
a vote.
10021-2 was prepared by Joint Technical Committee
International Standard ISO/IEC
ISOIIEC JTC 1, Information technology.
ISO/IEC 10021-2 consists of the following parts, under the general title: Information
technology - Text Communication - Message-Oriented Text Interchange Systems
(MOTIS) -
- Part I: System and Service Overview
- Part 2: Overall Architecture
- Part 3: Abstract Service Definition Conventions
- Part 4: Message Transfer System: Abstract Service Definition and Procedures
- Part 5: Message Store: Abstract Service Definition
- Part 6: Protocol Specifcations
- Part 7: Interpersonal Messaging System
Annexes A, B, C and E form an integral part of this part of ISOIIEC 10021. Annexes
D, F and G are for information only.
'W
..
ix
ISO/IEC 10021-2 : 1990 (E)
Introduction
This part of ISO/IEC 10021 is one of a number of parts of ISO/IEC 10021 (the International Standards
for Message-Oriented Text Interchange Systems (MOTIS)). ISO/IEC 10021 provides a comprehensive
blueprint for a Message Handling System (MHS) realized by any number of cooperating open systems.
The purpose of an MHS is to enable users to exchange messages on a store-and-forward basis. A
message submitted on behalf of one user, the originator, is conveyed by the Message Transfer System
(MTS) and subsequently delivered to the agents of one or more additional users, the recipients. Access
units (AUs) link the MTS to communication systems of other kinds (e.g., postal systems). A user is
assisted in the preparation, storage, and display of messages by a user agent (UA). Optionally, he is
assisted in the storage of messages by a message store (MS). The MTS comprises a number of message
transfer agents (MTAs) which collectively perform the store-and-forward message transfer function.
This part of ISO/IEC 10021 specifies the overall architecture of the MHS and serves as a technical
introduction to it.
The text of this part of ISO/IEC 10021 is the subject of joint CCITT-IS0 agreement. The corresponding
CCITT specification is Recommendation X.402.
II.;.
X
I
INTERNATIONAL STANDARD ISO/IEC 10021-2 : 1990 (E)
Information technology - Text Communication -
Message-Oriented Text Interchange Systems (MOTIS) -
Part 2 : Overall Architecture
Section one - Introduction
1 Scope
This part of ISO/IEC 10021 defines the overall architecture of the MHS and serves as a technical
introduction to it.
Other aspects of Message Handling are specified in other parts of ISO/IEC 10021. A non-technical
overview of Message Handling is provided by ISO/IEC 10021-1. The conventions used in the definition
of the abstract services provided by MHS components are defined in ISO/IEC 10021-3. The abstract
service the MTS provides and the procedures that govern its distributed operation are defined in
ISO/IEC 10021-4. The abstract service the MS provides is defined in ISO/IEC 10021-5. The application
protocols that govern the interactions of MHS components are specified in ISO/IEC 10021-6. The
Interpersonal Messaging System, an application of Message Handling, is defined in ISO/IEC 10021 -7.
The IS0 International Standards and CCITT Recommendations on Message Handling are summarized in
Table 1.
Table 1
Specifications for Message Handling Systems
-3 w
The Directory, the principal means for disseminating communication-related information among MHS
components, is defined in ISO/IEC 9594, as summarized in Table 2.
ISO/IEC 10021-2 : 1990 (E)
Table 2
Specifications for Directories
+. .+.+. +
I ISO/IEC I CCITT I SUBJECT MATTER I
+. .+.+. +
I 9594-1 X.500 Overvieu
I 9594-2 I X.501 I Models
I
9594-3 X.511 Abstract service definition
I 9594-4 1 X.518 I Procedures for distributed operation I
9594-5 X.519 Protocol specifications
1 9594-6 I X.520 I Selected attribute types
9594-7 X.521 Selected object classes
9594-8 I X.509 I Authentication frameuork
+ .+.+. +
The architectural foundation for Message Handling is provided by other International Standards. The
OS1 Reference Model is defined in IS0 7498. The notation for specifying the data structures of abstract
services and application protocols, ASN. 1, and the associated encoding rules are defined in IS0 8824 and
8825. The means for establishing and releasing associations, the ACSE, is defined in IS0 8649 and 8650.
The means for reliably conveying APDUs over associations, the RTSE, is defined in ISO/IEC 9066. The
means for making requests of other open systems, the ROSE, is defined in ISO/IEC 9072.
The IS0 International Standards and CCITT Recommendations which form the foundation for Message
Handling are summarized in Table 3.
Table 3
Specifications for MHS Foundations
+ .+.+. +
I IS0 I CCITT I SUBJECT MATTER I
+- Model .+. +
I 7498 1 X.200 I OS1 Reference Model I
+. ASN.1 .+.-.---. +
I 8824 I X.208 I Abstract syntax notation I
I 8825 I X.209 I Basic encoding rules I
+- Association Control . +
8649 X 217 Service definition
I 8650 I XI227 I Protocol specification
I
+- Reliable
...