ISO/IEC 30107-2:2017
(Main)Information technology — Biometric presentation attack detection — Part 2: Data formats
Information technology — Biometric presentation attack detection — Part 2: Data formats
ISO/IEC 30107-2:2017 defines data formats for conveying the mechanism used in biometric presentation attack detection and for conveying the results of presentation attack detection methods. The attacks considered in the ISO/IEC 30107 series take place at the sensor during the presentation and collection of the biometric characteristics. Any other attacks are outside the scope of this document. ISO/IEC 30107-2:2017 contains the following data formats: a binary format and an XML schema. The data interchange formats in this document are generic, in that they may be applied and used in a wide range of application areas. No application-specific requirements are addressed here. Provisions for the cryptographic protection of the authenticity, integrity, and confidentiality of stored and transmitted presentation attack detection data are beyond the scope of this document. NOTE While addressing security is out of the scope of this document, PAD data may be protected by encoding them into a biometric information record (see ISO/IEC 19785-1) that includes an optional security block.
Technologies de l'information — Détection d'attaque de présentation en biométrie — Partie 2: Format des données
General Information
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 30107-2
First edition
2017-12
Information technology — Biometric
presentation attack detection —
Part 2:
Data formats
Technologies de l'information — Détection d'attaque de présentation
en biométrie —
Partie 2: Format des données
Reference number
©
ISO/IEC 2017
© ISO/IEC 2017, Published in Switzerland
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ii © ISO/IEC 2017 – All rights reserved
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Conformance . 2
5 Data elements . 2
5.1 Overview . 2
5.2 PAD output . 3
5.2.1 PAD decision . 3
5.2.2 PAD mechanism vendor identifier . 3
5.2.3 PAD mechanism identifier . 3
5.2.4 PAD score . 4
5.2.5 PAD extended data mechanism vendor identifier . 4
5.2.6 PAD extended data mechanism identifier . 4
5.2.7 PAD extended data . 4
5.3 PAD input . 5
5.3.1 Context of capture . 5
5.3.2 Level of supervision/surveillance. 5
5.3.3 Risk level . 5
5.3.4 Category of criteria for PAD . 6
5.3.5 PAD parameters . 6
5.3.6 PAD challenges. 6
5.3.7 PAD data capture date and time . 6
5.3.8 Capture device vendor identifier . 6
5.3.9 Capture device model identifier . 7
5.3.10 Capture device serial number . 7
Annex A (normative) Formal specifications . 8
Annex B (informative) PAD encoding examples .16
Bibliography .17
© ISO/IEC 2017 – 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 ISO documents 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 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 on 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 the following
URL: www.iso.org/iso/foreword.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 37, Biometrics.
A list of all parts in the ISO/IEC 30107 series can be found on the ISO website.
iv © ISO/IEC 2017 – All rights reserved
Introduction
The presentation of an artefact or of human characteristics to a biometric capture subsystem in
a fashion that could interfere with the intended policy of the biometric system is referred to as a
presentation attack. The ISO/IEC 30107 series is concerned with mechanisms for the automated
detection of presentation attacks. These mechanisms are called presentation attack detection (PAD)
mechanisms.
This document establishes common data formats for conveying the type of approach used in
presentation attack detection and for conveying the results of presentation attack detection methods.
This document specifies the meaning of the data elements used in the PAD data formats (see Clause 5), a
tagged binary PAD data format based on an extensible specification in ASN.1 (see A.1), and a textual PAD
data format based on an XML schema definition (see A.2). Annex A containing the formal specifications
is normative. The informative Annex B gives encoding examples.
© ISO/IEC 2017 – All rights reserved v
INTERNATIONAL STANDARD ISO/IEC 30107-2:2017(E)
Information technology — Biometric presentation attack
detection —
Part 2:
Data formats
1 Scope
This document defines data formats for conveying the mechanism used in biometric presentation
attack detection and for conveying the results of presentation attack detection methods. The attacks
considered in the ISO/IEC 30107 series take place at the sensor during the presentation and collection
of the biometric characteristics. Any other attacks are outside the scope of this document.
This document contains the following data formats: a binary format and an XML schema. The data
interchange formats in this document are generic, in that they may be applied and used in a wide range
of application areas. No application-specific requirements are addressed here.
Provisions for the cryptographic protection of the authenticity, integrity, and confidentiality of stored
and transmitted presentation attack detection data are beyond the scope of this document.
NOTE While addressing security is out of the scope of this document, PAD data may be protected by encoding
them into a biometric information record (see ISO/IEC 19785-1) that includes an optional security block.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 80000 (all parts), Quantities and units
ISO/IEC 2382-37, Information technology — Vocabulary — Part 37: Biometrics
ISO/IEC 8824-1, Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic
notation
ISO/IEC 8825-1, Information technology — ASN.1 encoding rules: Specification of Basic Encoding Rules
(BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules (DER)
ISO/IEC 19785-1, Information technology — Common Biometric Exchange Formats Framework — Part 1:
Data element specification
ISO/IEC 30107-1, Information technology — Biometric presentation attack detection — Part 1: Framework
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 2382-37 and
ISO/IEC 30107-1 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
© ISO/IEC 2017 – All rights reserved 1
4 Conformance
A block of presentation attack detection (PAD) data shall be conformant to this document if it conforms
to the normative requirements of Clause 5 and A.1 or A.2, respectively.
5 Data elements
5.1 Overview
Clause 5 contains a description of the data that may be generated by the PAD subsystem and used
by a relying system. This data may be generated at any point in the system. Consequently, the PAD
data available for a biometric sample may change at any stage in the collection and subsequent
processing of the biometric sample. PAD subsystems have data inputs (such as thresholds, biometric
samples, and secondary data streams, e.g. measures of conductance, reflectance, inductance, ECG, and
challenge/response pairs) and provide output data.
Data relevant to PAD includes both input and output data streams. Output data may include:
a) an indication of whether PAD data is available (beyond that intrinsically embedded in the biometric
signals);
b) an indication of whether a PAD decision has been made and, if so, the nature of the decision;
c) PAD score;
d) vector of partial PAD results;
e) any extended PAD data that accompanies the biometric sample;
f) identifiers of PAD mechanisms (PAD mechanism vendor identifier, PAD mechanism identifier, PAD
extended data mechanism vendor identifier, and PAD extended data mechanism identifier).
Input data may include:
a) context of the capture — enrolment, verification, or identification;
b) level of supervision/surveillance during the capture process;
c) current risk level, e.g. recent attack activity;
d) category of criteria for PAD, i.e. the criteria are common for all subjects (global), are specific to
each subject or are unknown;
e) any external parameters sent to be used in the PAD process;
f) any challenges that were given to the data capture subject;
g) PAD data capture date and time;
h) identifiers of the capture devi
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