INTERNATIONAL ISO/IEC STANDARD 18033-7 First edition 2022-04 Information security - Encryption algorithms - Part 7: Tweakable block ciphers Sécurité de I'information - Algorithmes de chiffrement - Partie 7: Chiffrements par blocs parameétrables Reference number IEC IS0/IEC 18033-7:2022(E) OSI @ IS0/IEC 2022 IS0/IEC 18033-7:2022(E) COPYRIGHT PROTECTED DOCUMENT @IS0/IEC2022 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 on the internet or an intranet, withoutpriorwrittenpermission.Permission can berequestedfrom eitherIso at theaddress below orIso'smemberbodyinthecountryoftherequester. ISO copyright office CP 401 · Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +4122 749 0111 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS0/IEC 2022 - All rights reserved