ISO/IEC 29109-7:2011

INTERNATIONAL ISO/IEC
STANDARD 29109-7
First edition
2011-10-01
Information technology — Conformance
testing methodology for biometric data
interchange formats defined in
ISO/IEC 19794 —
Part 7:
Signature/sign time series data
Technologies de l'information — Méthodologie d'essai de conformité
pour les formats d'interéchange de données biométriques définis dans
l'ISO/CEI 19794 —
Partie 7: Données de série chronologique de signature/signe

Reference number
©
ISO/IEC 2011
©  ISO/IEC 2011
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ii © ISO/IEC 2011 – All rights reserved

Contents Page
Foreword . iv
Introduction . v
1  Scope . 1
2  Conformance . 1
3  Normative references . 2
4  Terms and definitions . 2
5  Symbols and abbreviated terms . 2
6  Conformance testing methodology . 2
6.1  General . 2
6.2  Table of requirements in the base standard . 2
6.3  Table of Test Assertions – Full Format . 10
6.4  Table of Test Assertions – Compact Format . 21

© ISO/IEC 2011 – 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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of the joint technical committee is to prepare International Standards. 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 % of the national bodies casting a vote.
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.
ISO/IEC 29109-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 37, Biometrics.
ISO/IEC 29109 consists of the following parts, under the general title Information technology — Conformance
testing methodology for biometric data interchange formats defined in ISO/IEC 19794:
 Part 1: Generalized conformance testing methodology
 Part 2: Finger minutiae data
 Part 3: Finger pattern spectral data
 Part 4: Finger image data
 Part 5: Face image data
 Part 6: Iris image data
 Part 7: Signature/sign time series data
 Part 8: Finger pattern skeletal data
 Part 9: Vascular image data
 Part 10: Hand geometry silhouette data
 Part 11: Signature/sign processed dynamic data
 Part 13: Voice data
 Part 14: DNA data
iv © ISO/IEC 2011 – All rights reserved

Introduction
ISO/IEC 19794-7 specifies two data interchange formats for storing, recording, and transmitting signature/sign
time series data records. This part of ISO/IEC 29109 establishes tests for checking the correctness of the
binary records.
Without standardized methods for conducting conformance tests of commercial products that claim to support
ISO/IEC 19794-7, application developers and implementers of Biometric Service Providers can interpret the
ISO/IEC 19794-7 specification differently and this can compromise interoperability. This possibility rests on the
assertion that conformance to ISO/IEC 19794-7 is a necessary prerequisite for achieving interoperability
among implementations. This is the motivation for development of this conformance testing methodology.
This part of ISO/IEC 29109 supports those applications that require use of signature/sign time series data
according to ISO/IEC 19794-7. It defines a testing methodology to assure conformance of a vendor's
application or service to the base ISO/IEC 19794-7 specification. Thus this document is intended to
 establish elements of the conformance testing methodology framework that are specific to the signature/
sign time series-based data record requirements of ISO/IEC 19794-7,
 define requirements and guidelines for specifying conformance test suites and related test methods for
measuring conformity of products and services to the signature/sign time series-based data record
requirements of ISO/IEC 19794-7, and
 define test procedures to be followed before, during, and after conformance testing.
This part of ISO/IEC 29109 is applicable to the development and use of conformity test method specifications,
conformity test suites for ISO/IEC 19794-7 records, and conformance testing programs for ISO/IEC 19794-7
conformant products. It is intended primarily for use by testing organizations, but can be applied by developers
and users of test method specifications and test method implementations.
The tables of test assertions in Clause 6 specify levels of testing for the conformance requirements of
ISO/IEC 19794-7.
© ISO/IEC 2011 – All rights reserved v

INTERNATIONAL STANDARD ISO/IEC 29109-7:2011(E)

Information technology — Conformance testing methodology
for biometric data interchange formats defined in
ISO/IEC 19794 —
Part 7:
Signature/sign time series data
1 Scope
This part of ISO/IEC 29109 specifies elements of conformance testing methodology, test assertions, and test
procedures as applicable to ISO/IEC 19794-7. ISO/IEC 19794-7 defines two data interchange formats for
signature/sign time series data, one for general use and one compact format for use with smart cards and
other tokens.
This part of ISO/IEC 29109 establishes
 test assertions of the structure of both signature/sign time series data formats as specified in
ISO/IEC 19794-7 (Type A Level 1 as defined in ISO/IEC 29109-1),
 test assertions of internal consistency by checking the types of values that may be contained within each
field (Type A Level 2 as defined in ISO/IEC 29109-1), and
 test assertions on the contents of data records in the signature/sign time series data formats as specified
in ISO/IEC 19794-7 (Type A Level 3 as defined in ISO/IEC 29109-1).
This part of ISO/IEC 29109 does not establish
 tests of other characteristics of biometric products or other types of testing of biometric products (e.g.
acceptance, performance, robustness, security), and
 tests of conformance of systems that do not produce ISO/IEC 19794-7 records.
2 Conformance
Biometric data interchange format conformance tests conform to this part of ISO/IEC 29109 if they satisfy all
of the normative requirements related to Clause 6. Specifically, they shall use the test methodology specified
in Clauses 6, 7 and 8 of ISO/IEC 29109-1:2009, and all tests shall use the assertions defined in Table 2 to
Table 4.
Implementations of ISO/IEC 19794-7 tested according to the methodology specified shall be able to claim
conformance only to those requirements specified in ISO/IEC 19794-7 that are tested by the test methods
established by this methodology.
Implementations of ISO/IEC 19794-7 do not necessarily need to conform to all possible aspects of
ISO/IEC 19794-7, but only to those ISO/IEC 19794-7 requirements that are claimed to be supported by the
implementation in an Implementation Conformance Statement, filled out in accordance with Clause 8 of
ISO/IEC 29109-1:2009 and Table 1 of this part of ISO/IEC 29109.
© ISO/IEC 2011 – All rights reserved 1

3 Normative references
The following referenced documents are indispensable for the application 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/IEC 19794-7:2007, Information technology — Biometric data interchange formats — Part 7:
Signature/sign time series data
ISO/IEC 29109-1:2009, Information technology — Conformance testing methodology for biometric data
interchange formats defined in ISO/IEC 19794 — Part 1: Generalized conformance testing methodology
4 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 19794-7 and ISO/IEC 29109-1
apply.
5 Symbols and abbreviated terms
For the purposes of this document, the symbols and abbreviated terms given in ISO/IEC 19794-7 and
ISO/IEC 29109-1 apply.
6 Conformance testing methodology
6.1 General
The testing methodology specified in Clauses 6, 7 and 8 of ISO/IEC 29109-1:2009 shall apply. The content of
the tables below is based on the conformance testing methodology outlined in ISO/IEC 29109-1 and shall only
be used in the context of that testing methodology.
6.2 Table of requirements in the base standard
The normative requirements of ISO/IEC 19794-7:2007 signature/sign time series data formats are listed in
Table 1. Under subformat applicability the columns labelled F and C indicate the Full and Compact Formats. The
supplier of the IUT can explain which optional components of the standard are supported and the testing
laboratory can note the results of the test.
Table 1 — Requirements of the base standard, ISO/IEC 19794-7:2007
Subformat
Reference
Require- IUT Supported Test
Applicability
in Base Requirement Summary Level Status
ment ID Support Range Result
Standard
F C
R-1 5.1 The coordinate system used to express 3B M Y Y
the pen position shall be a three-
dimensional Cartesian coordinate
system.
R-2 5.1 The x-axis shall be the horizontal axis of 3B M Y Y
the writing plane, with x coordinates
increasing to the right.
R-3 5.1 The y-axis shall be the vertical axis of 3B M Y Y
the writing plane, with y coordinates
increasing upwards.
2 © ISO/IEC 2011 – All rights reserved

Table 1 (continued)
Subformat
Reference
Require- IUT Supported Test
Applicability
in Base Requirement Summary Level Status
ment ID Support Range Result
Standard
F C
R-4 5.1 The z-axis shall be the axis 3C O Y Y
perpendicular to the writing plane, with z
coordinates increasing upwards out of
the writing plane starting from 0.
R-5 5.2 The more significant octets of any 1 M Y Y
multioctet quantity are stored at lower
addresses in memory than (and are
transmitted before) less significant
octets.
R-6 7.2 The organisation of the BDB shall be as 2 M Y N
follows:
R-7 1. mandatory variable-length BDB 2 M Y N
header containing information about the
overall BDB,
R-8 2. mandatory variable-length BDB body. 2 M Y N
R-9 7.3.1 The BDB header shall contain infor- 2 M Y N
mation about the overall signature/ sign
time series data block.
R-10 7.3.2 The signature/sign time series data 1 M Y N
block shall begin with the three ASCII
characters “SDI” to identify the data
block as following the full format defined
in ISO/IEC 19794-7:2007, followed by a
zero octet as a string terminator (5344
4900 ).
Hex
R-11 7.3.3 The version number for the version of 1 M Y N
ISO/IEC 19794-7:2007 used in
constructing the signature/sign time
series data block shall be placed in four
octets. This version number shall
consist of three ASCII characters
followed by a zero octet as a string
terminator. The first and second
character shall represent the major
revision number and the third character
will represent the minor revision
number. The version number shall be
“10” (203130 , an ASCII space
Hex
followed by an ASCII ‘1’ and an ASCII
‘0’).
R-12 7.3.4.1 The channel descriptions field shall 1 M Y N
begin with a channel inclusion field
indicating the presence or absence of
channels. The channel inclusion field
shall consist of 2 octets. Each bit shall
correspond to a channel as shown in
Table 4 of ISO/IEC 19794-7:2007. A bit
value of 1 shall encode the presence of
the corresponding channel; a bit value
of 0 shall encode the absence of the
corresponding channel.
© ISO/IEC 2011 – All rights reserved 3

Table 1 (continued)
Subformat
Reference
Require- IUT Supported Te
...