SIST EN IEC 62680-1-4:2019
(Main)Universal Serial Bus interfaces for data and power - Part 1-4: Common Components - USB Type-C(tm) Authentication Specification (IEC 62680-1-4:2018)
Universal Serial Bus interfaces for data and power - Part 1-4: Common Components - USB Type-C(tm) Authentication Specification (IEC 62680-1-4:2018)
This specification defines the architecture and methodology for unilateral Product
Authentication. It is intended to be fully compatible with and extend existing PD and USB
infrastructure. Information is provided to allow for Policy enforcement, but individual Policy
decisions are not specified.
The Authentication of USB Type-C products that support Alternate Modes is allowed.
However, the methods to do so are outside the scope of this specification.
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-4: Gemeinsame Bauteile - Festlegung für USB-Typ-CTM-Authentifizierung (IEC 62680-1-4:2018)
Interfaces de bus série universel (USB) pour les données et l'alimentation - Partie 1-4 : Composants communs - Spécification d'authentification USB Type-C(tm) (IEC 62680-1-4:2018)
IEC 62680-1-4:2018 fournit un moyen d'authentifier les produits au regard de l'identification et de la configuration. L'authentification est réalisée par communication de messages USB Power Delivery et/ou par transactions de contrôle du bus de données USB.
IEC 62680-1-4:2018 définit l'architecture et la méthodologie d'une authentification produit unilatérale. Elle est destinée à être intégralement compatible avec les infrastructures PD et USB existantes et à les développer. Certaines informations sont fournies en vue d'assurer l'application des Politiques; néanmoins, les décisions individuelles à ce sujet ne sont pas spécifiées.
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-4. del: Skupne komponente - Specifikacija za avtentikacijo USB tipa C™ (IEC 62680-1-4:2018)
Ta specifikacija opredeljuje arhitekturo in metodologijo za enostransko avtentikacijo izdelka. Njen namen je popolna združljivost z infrastrukturo PD in USB ter njena razširitev. Podane so informacije, ki omogočajo izvrševanje politike, vendar posamezne odločitve niso določene.
Dovoljena je avtentikacija izdelkov USB tipa C, ki podpirajo alternativne načine. Kljub temu metode avtentikacije ne spadajo na področje uporabe te specifikacije.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN IEC 62680-1-4:2019
01-februar-2019
Vmesniki univerzalnega serijskega vodila za prenos podatkov in napajanje - 1-4.
del: Skupne komponente - Specifikacija za avtentikacijo USB tipa C™ (IEC 62680-1
-4:2018)
Universal Serial Bus interfaces for data and power - Part 1-4: Common Components -
USB Type-C(tm) Authentication Specification (IEC 62680-1-4:2018)
Schnittstellen des Universellen Seriellen Busses für Daten und Energie - Teil 1-4:
Gemeinsame Bauteile - Festlegung für USB-Typ-CTM-Authentifizierung (IEC 62680-1-
4:2018)
Interfaces de bus série universel (USB) pour les données et l'alimentation - Partie 1-4 :
Composants communs - Spécification d'authentification USB Type-C(tm) (IEC 62680-1-
4:2018)
Ta slovenski standard je istoveten z: EN IEC 62680-1-4:2018
ICS:
35.200 Vmesniška in povezovalna Interface and interconnection
oprema equipment
SIST EN IEC 62680-1-4:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN IEC 62680-1-4:2019
---------------------- Page: 2 ----------------------
SIST EN IEC 62680-1-4:2019
EUROPEAN STANDARD EN IEC 62680-1-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2018
ICS 35.200
English Version
Universal Serial Bus interfaces for data and power - Part 1-4:
Common Components - USB Type-C(tm) Authentication
Specification
(IEC 62680-1-4:2018)
Interfaces de bus série universel (USB) pour les données et Schnittstellen des Universellen Seriellen Busses für Daten
l'alimentation - Partie 1-4 : Composants communs - und Energie - Teil 1-4: Gemeinsame Bauteile - Festlegung
Spécification d'authentification USB Type-C(tm) für USB-Typ-CTM-Authentifizierung
(IEC 62680-1-4:2018) (IEC 62680-1-4:2018)
This European Standard was approved by CENELEC on 2018-05-15. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62680-1-4:2018 E
---------------------- Page: 3 ----------------------
SIST EN IEC 62680-1-4:2019
EN IEC 62680-1-4:2018 (E)
European foreword
The text of document 100/2981/CDV, future edition 1 of IEC 62680-1-4, prepared by technical area
14: "Interfaces and methods of measurement for personal computing equipment", of IEC/TC 100:
"Audio, video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel
vote and approved by CENELEC as EN IEC 62680-1-4:2018.
The following dates are fixed:
(dop) 2019-02-15
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2021-05-15
standards conflicting with the
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62680-1-4:2018 was approved by CENELEC as a
European Standard without any modification.
2
---------------------- Page: 4 ----------------------
SIST EN IEC 62680-1-4:2019
IEC 62680-1-4
®
Edition 1.0 2018-04
INTERNATIONAL
STANDARD
colour
inside
Universal serial bus interfaces for data and power –
Part 1-4: Common components – USB Type-C™ Authentication Specification
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.200 ISBN 978-2-8322-5533-9
Warning! Make sure that you obtained this publication from an authorized distributor.
® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 5 ----------------------
SIST EN IEC 62680-1-4:2019
– 2 – IEC 62680-1-4:2018 © IEC 2018
© USB-IF:2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
UNIVERSAL SERIAL BUS INTERFACES FOR DATA AND POWER –
Part 1-4: Common components – USB Type-C™ Authentication Specification
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all
national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-
operation on all questions concerning standardization in the electrical and electronic fields. To this end and in
addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation
is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising with
the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all interested
IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses
arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62680-1-4 has been prepared by technical area 14: Interfaces and
methods of measurement for personal computing equipment, of IEC technical committee 100:
Audio, video and multimedia systems and equipment.
The text of this standard was prepared by the USB Implementers Forum (USB-IF). The structure
and editorial rules used in this publication reflect the practice of the organization which submitted
it.
---------------------- Page: 6 ----------------------
SIST EN IEC 62680-1-4:2019
IEC 62680-1-4:2018 © IEC 2018 – 3 –
© USB-IF:2017
The text of this International Standard is based on the following documents:
CDV Report on voting
100/2981/CDV 100/3046/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
A list of all parts in the IEC 62680 series, published under the general title Universal serial bus
interfaces for data and power, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
---------------------- Page: 7 ----------------------
SIST EN IEC 62680-1-4:2019
– 4 – IEC 62680-1-4:2018 © IEC 2018
© USB-IF:2017
INTRODUCTION
The IEC 62680 series is based on a series of specifications that were originally developed by the
USB Implementers Forum (USB-IF). These specifications were submitted to the IEC under the
auspices of a special agreement between the IEC and the USB-IF.
This standard is the USB-IF publication USB Type-C™ Authentication Specification Revision 1.0.
The USB Implementers Forum, Inc.(USB-IF) is a non-profit corporation founded by the group of
companies that developed the Universal Serial Bus specification. The USB-IF was formed to
provide a support organization and forum for the advancement and adoption of Universal Serial
Bus technology. The Forum facilitates the development of high-quality compatible USB
peripherals (devices), and promotes the benefits of USB and the quality of products that have
passed compliance testing.
ANY USB SPECIFICATIONS ARE PROVIDED TO YOU "AS IS, "WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-INFRINGEMENT,
OR FITNESS FOR ANY PARTICULAR PURPOSE. THE USB IMPLEMENTERS FORUM AND
THE AUTHORS OF ANY USB SPECIFICATIONS DISCLAIM ALL LIABILITY, INCLUDING
LIABILITY FOR INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR
IMPLEMENTATION OR INFORMATION IN THIS SPECIFICAITON.
THE PROVISION OF ANY USB SPECIFICATIONS TO YOU DOES NOT PROVIDE YOU WITH
ANY LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY
INTELLECTUAL PROPERTY RIGHTS.
Entering into USB Adopters Agreements may, however, allow a signing company to participate in
a reciprocal, RAND-Z licensing arrangement for compliant products. For more information, please
see:
http://www.usb.org/developers/docs/
http://www.usb.org/developers/devclass_docs#approved
IEC DOES NOT TAKE ANY POSITION AS TO WHETHER IT IS ADVISABLE FOR YOU TO
ENTER INTO ANY USB ADOPTERS AGREEMENTS OR TO PARTICIPATE IN THE USB
IMPLEMENTERS FORUM.”
---------------------- Page: 8 ----------------------
SIST EN IEC 62680-1-4:2019
IEC 62680-1-4:2018 © IEC 2018 – 5 –
© USB-IF:2017
Universal Serial Bus
Type-C™ Authentication
Specification
Revision 1.0 with ECN and Errata through February 2, 2017
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
---------------------- Page: 9 ----------------------
SIST EN IEC 62680-1-4:2019
– 6 – IEC 62680-1-4:2018 © IEC 2018
© USB-IF:2017
Copyright © 2017, USB 3.0 Promoter Group
All rights reserved.
INTELLECTUAL PROPERTY DISCLAIMER
THIS SPECIFICATION IS PROVIDED TO YOU “AS IS” WITH NO WARRANTIES
WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NON-
INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE. THE AUTHORS OF
THIS SPECIFICATION DISCLAIM ALL LIABILITY, INCLUDING LIABILITY FOR
INFRINGEMENT OF ANY PROPRIETARY RIGHTS, RELATING TO USE OR
IMPLEMENTATION OF INFORMATION IN THIS SPECIFICATION. THE PROVISION OF
THIS SPECIFICATION TO YOU DOES NOT PROVIDE YOU WITH ANY LICENSE,
EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL
PROPERTY RIGHTS.
All product names are trademarks, registered trademarks, or service marks of their
respective owners.
USB Type-C™ and USB-C™ are trademarks of USB Implementers Forum.
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
---------------------- Page: 10 ----------------------
SIST EN IEC 62680-1-4:2019
IEC 62680-1-4:2018 © IEC 2018 – 7 –
© USB-IF:2017
CONTENTS
Specification Work Group Chairs / Specification Editors . 12
Specification Work Group Contributors . 12
Revision History . 14
1 Introduction . 15
1.1 Scope . 15
1.2 Overview . 15
1.3 Related Documents . 16
1.4 Terms and Abbreviations . 18
1.5 Conventions . 19
1.5.1 Precedence . 19
1.5.2 Keywords . 19
1.5.3 Numbering . 20
1.5.4 Byte Ordering . 20
2 Overview . 20
2.1 Topology . 20
2.2 Cryptographic Methods . 21
2.2.1 Random Numbers . 21
2.3 Security Overview . 22
2.3.1 Periodic Re-Authentication . 22
2.3.2 Secret Key Storage and Protection . 22
2.3.3 Security Evaluation Criteria . 22
2.4 Impact to Existing Ecosystem . 22
2.4.1 Proxy Capabilities (PD traversing the Hub topology) . 23
3 Authentication Architecture . 23
3.1 Certificates . 23
3.1.1 Format . 23
3.1.2 Textual Format . 23
3.1.3 Attributes and Extensions. 23
3.2 Certificate Chains . 25
3.2.1 Provisioning . 25
3.3 Private Keys . 26
4 Authentication Protocol . 26
4.1 Digest Query . 26
4.2 Certificate Chain Read . 26
4.3 Authentication Challenge . 27
4.4 Errors and Alerts . 27
4.4.1 Invalid Request . 27
4.4.2 Unsupported Protocol Version . 27
4.4.3 Busy . 27
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
---------------------- Page: 11 ----------------------
SIST EN IEC 62680-1-4:2019
– 8 – IEC 62680-1-4:2018 © IEC 2018
© USB-IF:2017
4.4.4 Unspecified . 27
5 Authentication Messages . 27
5.1 Header . 28
5.1.1 USB Type-C Authentication Protocol Version . 28
5.1.2 Message Type . 28
5.1.3 Param1 . 28
5.1.4 Param2 . 28
5.2 Authentication Requests . 28
5.2.1 GET_DIGESTS . 29
5.2.2 GET_CERTIFICATE . 29
5.2.3 CHALLENGE . 30
5.3 Authentication Responses . 30
5.3.1 DIGESTS . 31
5.3.2 CERTIFICATE . 31
5.3.3 CHALLENGE_AUTH . 32
5.3.4 ERROR . 33
6 Authentication of PD Products . 34
6.1 Transfers less than or equal to MaxExtendedMsgLen . 34
6.2 Transfers greater than MaxExtendedMsgLen . 35
6.3 Timing Requirements for PD Security Extended Messages . 38
6.3.1 Authentication Initiator . 38
6.3.2 Authentication Responder . 39
6.4 Context Hash . 40
7 Authentication of USB Products . 40
7.1 Descriptors . 40
7.1.1 Authentication Capability Descriptor . 40
7.2 Mapping Authentication Messages to USB . 41
7.2.1 Authentication IN . 41
7.2.2 Authentication OUT . 42
7.3 Authentication Protocol . 42
7.3.1 Digest Query . 42
7.3.2 Certificate Read . 43
7.3.3 Authentication Challenge . 43
7.3.4 Errors . 44
7.4 Timing Requirements for USB . 44
7.4.1 USB Host Timing Requirements . 44
7.4.2 USB Device Timing Requirements . 45
7.5 Context Hash . 46
8 Protocol Constants . 46
A ACD . 47
A.1. ACD Formatting . 47
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
---------------------- Page: 12 ----------------------
SIST EN IEC 62680-1-4:2019
IEC 62680-1-4:2018 © IEC 2018 – 9 –
© USB-IF:2017
A.1.1. Version TLV . 47
A.1.2. XID TLV . 48
A.1.3. Power Source Capabilities TLV . 48
A.1.4. Power Source Certifications TLV . 49
A.1.5. Cable Capabilities TLV . 50
A.1.6. Security Description TLV . 50
A.1.7. Playpen TLV . 54
A.1.8. Vendor Extension TLV . 55
A.1.9. Extension TLV . 55
A.2. ACD for a PD Product . 55
A.3. ACD for a USB Product . 56
B Cryptographic Examples . 57
B.1. Example Authentication Sequence . 57
B.2. Example Certificate Chain Topology . 57
B.2.1. Certificate Chain . 57
B.2.2. Root Certificate . 62
B.2.3. Key Pairs . 63
B.3. Example Authentication Signature Verification . 64
B.3.1. CHALLENGE Request . 64
B.3.2. CHALLENGE_AUTH Response . 64
C Potential Attack Vectors . 65
TABLES
Table 1-1: Terms and Abbreviations . 18
Table 2-1: Summary of Cryptographic Methods . 21
Table 3-1: Certificate Chain Format . 25
Table 5-1: Authentication Message Header . 28
Table 5-2: USB Type-C Authentication Protocol Version. 28
Table 5-3: Authentication Request Types . 29
Table 5-4: GET_DIGESTS Request Header. 29
Table 5-5: GET_CERTIFICATE Request Header . 29
Table 5-6: GET_CERTIFICATE Request Payload . 30
Table 5-7: CHALLENGE Request Header . 30
Table 5-8: CHALLENGE Request Payload . 30
Table 5-9: Authentication Response Types. 30
Table 5-10: DIGESTS Response Header . 31
Table 5-11: DIGESTS Response Payload . 31
Table 5-12: CERTIFICATE Response Header . 31
Table 5-13: CERTIFICATE Response Payload . 32
Copyright © 2017 USB 3.0 Promoter Group. All rights reserved.
---------------------- Page: 13 ----------------------
SIST EN IEC 62680-1-4:2019
– 10 – IEC 62680-1-4:2018 © IEC 2018
© USB-IF:2017
Table 5-14: CHALLENGE_AUTH Response Header . 32
Table 5-15: CHALLENGE_AUTH Response Payload . 33
Table 5-16: Message Contents for ECDSA Digital Signature . 33
Table 5-17: ERROR Response Header . 34
Table 5-18: ERROR Codes . 34
Table 6-1: Timeout Values for a PD Authentication Initiator . 38
Table 6-2: Timing Requirements for PD Authentication Responder . 39
Table 7-1: Authentication Capability Descriptor . 40
Table 7-2: Authentication Capability Descriptor Types . 41
Table 7-3: Authentication Message bRequest Values . 41
Table 7-4: Authentication IN Control Request Fields . 41
Table 7-5: Authentication Message Header Mapping . 41
Table 7-6: Authentication OUT Control Request Fields .
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.