1、BSI Standards PublicationBS ISO/IEC 19794-7:2014Information technology Biometric data interchangeformatsPart 7: Signature/sign time series dataCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted with
2、out license from IHS-,-,-BS ISO/IEC 19794-7:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO/IEC19794-7:2014. It supersedes BS ISO/IEC 19794-7:2007 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee IST/44, Biometr
3、ics.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI Stan
4、dardsLimited 2014ISBN 978 0 580 74588 1ICS 35.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2014.Amendments issued since publicationDate Text affe
5、ctedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014Information technology Biometric data interchange formats Part 7: Signature/sign time serie
6、s dataTechnologies de linformation Formats dchange de donnes biomtriques Partie 7: Donnes de srie chronologique de signature/signe ISO/IEC 2014INTERNATIONAL STANDARDISO/IEC19794-7Second edition2014-02-01Reference numberISO/IEC 19794-7:2014(E)Copyright British Standards Institution Provided by IHS un
7、der license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014ISO/IEC 19794-7:2014(E)ii ISO/IEC 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO/IEC 2014All rights reserved. Unless otherwise specified, no pa
8、rt of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member b
9、ody in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for
10、 ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014ISO/IEC 19794-7:2014(E) ISO/IEC 2014 All rights reserved iiiContents PageForeword iv1 Scope . 12 Conformance . 13 Normative references 24 Terms and definitions . 25 Abbreviated terms 46 Conventions . 4
11、6.1 Coordinate system . 46.2 Octet and bit order . 46.3 Registered format type identifiers . 47 Channels 57.1 General . 57.2 Pen tip position channels: X, Y, Z . 67.3 Pen tip velocity channels: VX, VY 67.4 Pen tip acceleration channels: AX, AY . 67.5 Time channel: T 67.6 Time difference channel: DT
12、. 67.7 Pen tip force channel: F . 67.8 Pen tip switch state channel: S 77.9 Pen orientation channels: TX, TY, A, E, R 78 Full format . 88.1 Record organisation . 88.2 General header 98.3 Record body 109 Compact format 169.1 Record organisation 169.2 Comparison algorithm parameters template 179.3 Emb
13、edment in a CBEFF data structure . 189.4 Record body 1910 Compression format 1910.1 Record organisation 1910.2 General header . 2010.3 Record body 20Annex A (normative) Conformance testing methodology .23Annex B (informative) Best practices . Data acquisition71Annex C (informative) ASN.1 specificati
14、on of the compact format 72Annex D (informative) Signature/sign coding examples 75Bibliography .77Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2
15、014ISO/IEC 19794-7:2014(E)ForewordISO (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
16、 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 IS
17、O 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 committ
18、ee 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 p
19、ossibility 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 19794-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 37, Biom
20、etrics.This second edition revises the first edition (ISO/IEC 19794-7:2007). Clauses 7 and 8 have been technically revised and it has been amended by Clause 10 and Annex A. It also incorporates the Technical Corrigendum ISO/IEC 19794-7:2007/Cor.1:2009.ISO/IEC 19794 consists of the following parts, u
21、nder the general title Information technology Biometric data interchange formats: Part 1: Framework 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 patte
22、rn skeletal data Part 9: Vascular image data Part 10: Hand geometry silhouette data Part 11: Signature/sign processed dynamic data Part 14: DNA dataThe following part is under preparation: Part 13:Voice dataiv ISO/IEC 2014 All rights reservedCopyright British Standards Institution Provided by IHS un
23、der license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014INTERNATIONAL STANDARD ISO/IEC 19794-7:2014(E)Information technology Biometric data interchange formats Part 7: Signature/sign time series data1 ScopeThi
24、s part of ISO/IEC 19794 specifies data interchange formats for signature/sign behavioural data captured in the form of a multi-dimensional time series using devices such as digitizing tablets or advanced pen systems. The data interchange formats are generic, in that they may be applied and used in a
25、 wide range of application areas where handwritten signs or signatures are involved. No application-specific requirements or features are addressed in this part of ISO/IEC 19794.This part of ISO/IEC 19794 contains a description of what data may be captured, three data formats for containing the data
26、: a full format for general use, a compression format capable of holding the same amount of information as the full format but in compressed form, and a compact format for use with smart cards and other tokens that does not require compression/decompression but conveys less information than the full
27、 format, and examples of data record contents and best practices in capture.Specifying which of the format types and which options defined in this part of ISO/IEC 19794 are to be applied in a particular application is out of scope; this needs to be defined in application-specific requirements specif
28、ications or application profiles.It is advisable that cryptographic techniques be used to protect the authenticity, integrity, and confidentiality of stored and transmitted biometric data; yet such provisions are beyond the scope of this part of ISO/IEC 19794.This part of ISO/IEC 19794 also specifie
29、s elements of conformance testing methodology, test assertions, and test procedures as applicable to this part of ISO/IEC 19794. It establishes test assertions on the structure and internal consistency of the signature/sign time series data formats defined in this part of ISO/IEC 19794 (type A level
30、 1 and 2 as defined in ISO/IEC 19794-1:2011/Amd.1), and semantic test assertions (type A level 3 as defined in ISO/IEC 19794-1:2011/Amd.1).The conformance testing methodology specified in this part of ISO/IEC 19794 does not establish: tests of other characteristics of biometric products or other typ
31、es of testing of biometric products (e.g. acceptance, performance, robustness, security), tests of conformance of systems that do not produce data records claimed to conform to the requirements of this part of ISO/IEC 19794.2 ConformanceA biometric data record conforms to this part of ISO/IEC 19794
32、if it satisfies the format requirements with respect to its structure, with respect to relations among its fields, and with respect to relations between its fields and the underlying input that are specified within clauses 610 of this part of ISO/IEC 19794. ISO/IEC 2014 All rights reserved 1Copyrigh
33、t British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014ISO/IEC 19794-7:2014(E)Biometric data interchange format conformance tests conform to this part of ISO/
34、IEC 19794 if they satisfy all of the normative requirements set forth in Annex A. Specifically, all level-1, level-2, and level-3 tests shall use the test assertions defined in Table A.2, Table A.3, and Table A.4 of clause A.2 in conformity with the concept and rules set in ISO/IEC 19794-1:2011/Amd.
35、1.Implementations of this part of ISO/IEC 19794 tested according to the specified methodology shall be able to claim conformance only to those biometric data record requirements specified in this part of ISO/IEC 19794 that are tested by the test methods established by this methodology.Implementation
36、s of this part of ISO/IEC 19794 do not necessarily need to conform to all possible aspects of this part of ISO/IEC 19794, but only to those requirements that are claimed to be supported by the implementation in an implementation conformance statement (ICS), filled out in accordance with ISO/IEC 1979
37、4-1:2011/Amd.1 and Table A.1 of clause A.1 of this part of ISO/IEC 19794.3 Normative referencesThe 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
38、 document (including any amendments) applies.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) Part 1ISO/IEC 19785-1, Information technology Common Biometric Exchange Formats
39、 Framework Part 1: Data element specificationISO/IEC 19785-2, Information technology Common Biometric Exchange Formats Framework Part 2: Procedures for the operation of the Biometric Registration AuthorityISO/IEC 19785-3, Information technology Common Biometric Exchange Formats Framework Part 3: Pat
40、ron format specificationsISO/IEC 19794-1:2011, Information technology Biometric data interchange formats Part 1: Framework4 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO/IEC 19794-1:2011 and the following apply.4.1channeldata item (captured, intermedi
41、ate, or processed) recorded in form of a time seriesEXAMPLE pen tip position x and y coordinates, pen tip force, pen tilt along the x and y axes, pen azimuth, pen elevation, pen rotation4.2compressionprocess that reduces the size of a digital file with or without loss of informationNote 1 to entry:
42、The compression format defined in clause 10 includes data compressed by lossless compression schemes.4.3pen azimuthangle measured clockwise from the positive y axis to the perpendicular projection of the pen onto the writing planeNote 1 to entry: The pen azimuth may range from 0 to 360.2 ISO/IEC 201
43、4 All rights reservedCopyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS ISO/IEC 19794-7:2014ISO/IEC 19794-7:2014(E)4.4pen-down eventevent from which on the pen tip is
44、 touching the writing plane4.5pen elevationangle between the perpendicular projection of the pen onto the writing plane and the penNote 1 to entry: The pen elevation may range from 0 to 90.4.6pen rotationangle of the rotation of the pen about its longitudinal axis measured counter-clockwise from a d
45、evice-specific rotational reference positionNote 1 to entry: The pen rotation may range from 0 to 360.4.7pen tilt along the x axisangle measured clockwise from the positive z axis to the perpendicular projection of the pen onto the x,z planeNote 1 to entry: The pen tilt along the x axis may range fr
46、om 90 to +90.4.8pen tilt along the y axisangle measured clockwise from the positive z axis to the perpendicular projection of the pen onto the y,z planeNote 1 to entry: The pen tilt along the y axis may range from 90 to +90.4.9pen-up eventevent from which on the pen tip is not touching the writing p
47、lane, after a pen-down event4.10sampling ratenumber of samples per second (or per other unit) taken from a continuous signal to make a discrete signal4.11signature/sign representationdata recorded from a single signature/sign4.12X jittersample standard deviation of at least 100 x coordinate samples
48、from a stationary pen4.13Y jittersample standard deviation of at least 100 y coordinate samples from a stationary pen4.14X pixel densitynumber of dots per millimetre that the capture device resolves in the x (horizontal) direction4.15Y pixel densitynumber of dots per millimetre that the capture device resolves in the y (vertical) direction ISO/IEC 2014 All rights reserved 3Copyright British Standards Institution Provided by IHS under license with BSI - Uncontrolled Copy Not for ResaleNo reproduction or networking permitted without license from IHS-,-
