INTERNATIONAL ISO/IEC STANDARD 19772 Secondedition 2020-11 Information security Authenticated encryption Sécurité de I'information - Chiffrement authentifie Referencenumber TEC ISO/IEC 19772:2020(E) [so @IS0/IEC 2020 IS0/IEC 19772:2020(E) COPYRIGHT PROTECTED DOCUMENT IS0/IEC2020 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, without prior written permission. Permission can be requested from either IsO at the address below or IsO's member body in the country of the requester. 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 i @ IS0/IEC 2020 - All rights reserved