BS IS0/IEC 18670:2025 BSl Standards Publication Information technology SoftWare Hash IDentifier (SWHID) Specification V1.2 bsi. BS ISO/IEC 18670:2025 BRITISH STANDARD National foreword This British Standard is the UK implementation of IS0/IEC 18670:2025. The UK participation in its preparation was entrusted to Technical Committee ICT/1, Information systems co-ordination. A list of organizations represented on this committee can be obtained on request to its committee manager. Contractual and legal considerations This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BsI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law. This publication is provided as is, and is to be used at the recipient's own risk. The recipient is advised to consider seeking professional guidance with respect to its use of this publication. This publication is not intended to constitute a contract. Users are responsible for its correct application @ The British Standards Institution 2025 Published by BSI Standards Limited 2025 ISBN 978 0 539 32547 8 ICS35.040; 35.040.10 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2025. Amendments/corrigenda issued since publication Date Text affected BS IS0/IEC 18670:2025 IEC International iso Standard ISO/IEC 18670 Information technology - First edition SoftWare Hash IDentifier (SWHID) 2025-04 Specification V1.2 Reference number ISO/IEC 18670:2025(en) ?ISO/IEC2025 BSISO/IEC 18670:2025 IS0/IEC 18670:2025(en) COPYRIGHTPROTECTEDDOCUMENT @IS0/IEC2025 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting beloworIso's memberbody inthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland @ IS0/IEC 2025 - All rights reserved i BSIS0/IEC 18670:2025 IS0/IEC 18670:2025(en) Contents Page Foreword ..iv Introduction ..V 1 Scope. 1 2 Normative references 1 3 Terms and definitions. 4 Syntax .3 5 Core identifiers 3 5.1 General. .3 5.2 Contents.. .3 5.3 Directories 4 5.4 Revisions. .5 5.5 Releases. .7 5.6 Snapshots.... .8 5.7 Compatibility with Git 9 6 Qualified identifiers. 10 6.1 Qualifiers.. .10 6.2 Fragment qualifiers. .10 6.2.1 General .10 6.2.2 Lines qualifier. .10 6.2.3 Bytes qualifier. .10 6.3 Context qualifiers. .11 6.3.1 General .11 6.3.2 Origin qualifier .11 6.3.3 Visit qualifier. .11 6.3.4 Path qualifier. .11 6.3.5Anchor qualifier .11 6.4 Comparing qualified SWHIDs 12 6.5 Recommendations. 12 Annex A (informative) Specification versioning 13 Bibliography .14 @ IS0/IEC 2025 - All rights reserved iii BSIS0/IEC18670:2025 IS0/IEC 18670:2025(en) 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. The procedures used to develop this document and those intended for its further maintenance are des