ISO/IEC 24787:2018

INTERNATIONAL ISO/IEC
STANDARD 24787
Second edition
2018-10
Information technology —
Identification cards — On-card
biometric comparison
Technologies de l'information — Identification des cartes —
Comparaison biométrique sur cartes
Reference number
©
ISO/IEC 2018
© ISO/IEC 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO/IEC 2018 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 3
5 Conformance . 4
6 Architecture of biometric comparison using an ICC . 4
6.1 General . 4
6.2 Off-card biometric comparison. 4
6.3 On-card biometric comparison (sensor-off-card) . 5
6.4 Work-sharing on-card biometric comparison . 6
6.5 Biometric system-on-card . 7
7 Framework for on-card comparison . 7
7.1 General . 7
7.2 Application selection (AID) . 7
7.3 Data for on-card biometric comparison . 7
7.3.1 General. 7
7.3.2 Format of biometric reference . 8
7.3.3 Data objects in the scope of biometric verification . 9
7.3.4 One biometric reference for multiple applications .11
7.4 Processes .11
7.4.1 Enrolment .11
7.4.2 Biometric verification .12
7.4.3 Comparison process and result output .12
7.5 Biometric comparison parameter management .12
7.6 Termination .12
8 Security policies for on-card biometric comparison .12
8.1 General .12
8.2 Common security policies for on-card biometric comparison .13
8.2.1 Minimum security policy .13
8.2.2 Security requirements and biometric reference management policy .13
8.2.3 Retry counter management .14
8.3 Security policies (SP1) for global biometric comparison parameters .14
8.4 Security policies (SP2) for application-specific biometric comparison parameters .14
9 Work-sharing on-card biometric comparison procedure .15
Annex A (informative) Sample APDU for on-card biometric comparison .17
Annex B (informative) Example of one biometric reference for multiple applications .20
Annex C (informative) Examples of implementations of on-card biometric comparison
mechanisms .22
Annex D (informative) Considerations for security mechanisms in on-card biometric
comparison .25
Bibliography .27
© ISO/IEC 2018 – All rights reserved iii

Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO 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. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the
work. In the field of information technology, ISO and IEC have established a joint technical committee,
ISO/IEC JTC 1.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for
the different types of document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject
of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html. This document was prepared by ISO/IEC JTC 1, Information technology, SC 17,
Cards and security devices for personal identification.
This second edition cancels and replaces the first edition (ISO/IEC 24787:2010), which has been
technically revised. It also incorporates the Technical Corrigendum ISO/IEC 24787:2010/Cor 1:2013.
The main changes compared to the previous edition are as follows:
— Clause 7 has been restructured; the subclauses have been relocated within the clause:
— in 7.3.3 (previously 7.1.3), configuration data elements and biometric comparison algorithm
parameters have been replaced with biometric functionality information and biometric
comparison parameters respectively. Refer to 7.3.3.2 and 7.3.3.3 for more information;
— in 7.3.4 (previously 7.1.4), the implementation of one biometric reference for multiple applications
has been updated. Refer to Annex B for an example of the updated implementation;
— Clause 8 (previously Annex B) has been moved from a normative annex into the main body of the
document;
— Clause 9 (previously Clause 8) has been replaced with an outline of the overall work-sharing process;
— previous Annexes A, D, F and H have been removed.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO/IEC 2018 – All rights reserved

Introduction
On-card biometric comparison provides a more secure biometric verification method than one where
a biometric comparison is carried outside a secure cryptographic device. Storing biometric reference
data in a secure ICC means that the reference is not available at any external interface once it has been
stored in the ICC, mitigating the risk of extraction and misuse by an unauthorised party.
ISO/IEC 7816-11 and ISO/IEC 19785-3 cover technologies for off-card and simple on-card biometric
comparison. ISO/IEC 17839 covers biometric system-on-card.
This document provides requirements for a biometric comparison methodology suitable for the on-card
environment. It also covers the on-card comparison work-sharing techniques that require an intensity
exceeding the capabilities of ICCs.
The International Organization for Standardization (ISO) and the International Electrotechnical
Commission (IEC) draw attention to the fact that it is claimed that compliance with this document may
involve the use of a patent concerning work-sharing given in Clause 9.
ISO and IEC take no position concerning the evidence, validity and scope of this patent right. The
holder of this patent right has assured ISO and IEC that he/she is willing to negotiate licences under
reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this
respect, the statement of the holder of this patent right is registered with ISO and IEC. Information may
be obtained from:
Exploit Technologies Pte Ltd.,
30 Biopolis Street,
#09-02 matrix,
Singapore 138671
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights other than those identified above. ISO and IEC shall not be held responsible for identifying
any or all such patent rights.
© ISO/IEC 2018 – All rights reserved v

INTERNATIONAL STANDARD ISO/IEC 24787:2018(E)
Information technology — Identification cards — On-card
biometric comparison
1 Scope
This document establishes
— architectures of biometric comparison using an ICC,
— on-card biometric comparison, both in sensor-off-card systems and as part of biometric system-
on-card,
— work-sharing on-card biometric comparison, and
— security policies for on-card biometric comparison.
This document does not establish
— requirements for off-card biometric comparison,
— requirements for biometric system-on-card (as defined in ISO/IEC 17839), or
— modality-specific requirements for storage and comparison.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requireme
...