INTERNATIONAL ISO/IEC STANDARD 10118-2 Third edition 2010-10-15 Information technology Security techniques Hash-functions Part 2: Hash-functions using an n-bit block cipher Technologies de I'information - Techniques de sécurite Fonctions debrouillage Partie 2: Fonctions de brouillage utilisant un chiffrement par blocs de n bits Reference number ISO/IEC 10118-2:2010(E) IEC @ ISO/IEC 2010 HS under I without license from IHS Not for Resale ISO/IEC 10118-2:2010(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below COPYRIGHT PROTECTED DOCUMENT ? ISO/IEC2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, isO's memberbody in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland Copyrihtinteratinal Oorganization for Standardization @ ISO/IEC 2010 - All rights reserved ed without license from IHS Not for Resale ISO/IEC 10118-2:2010(E) Contents Page Foreword Introduction. ..vi 1 Scope 2 Normative references.. 3 Terms and definitions 4 Symbols and abbreviated terms. 5 Use of the general model.... 6 Hash-function 1 .. 6.1 General. 6.2 Parameter selection 6.3 6.4 Initializing value.. 6.5 Round function.. 6.6 Output transformation 7 Hash-function 2 7.1 7.2 Parameter selection 7.3 Padding method 7.4 Initializing value ... 7.5 Round function ... 7.6 Output transformation 8 Hash-function 3 8.1 General 8.2 Parameterselection 8.3 Padding method . 8.4 Initializing value.... 8.5 Round function...... 8.6 Output transformation 9 Hash-function 4, 9 9.1 General 9.2 Parameter selection .9 9.3 9.4 Initializing value.. 9 9.5 Round function . 9.6 Output transformation . Annex A (informative) Use of AES. 13 A.1 13 A.2 Hash-function 1 .13 A.3 Hash-function 2 A.4 Hash-function 3 13 A.5 Hash-function 4 14 Annex B (informative) Examples ... B.1 General.. 15 B.2 Hash-function 1 15 B.3 Hash-function 2 16 B.4 Hash-function 3 . 17 Copyrght International Organizaionrstandardization Allrights reserved ili Not for Resale