CAN/CSA-ISO/IEC 10116:18 (R2023)
Information technology - Security techniques - Modes of operation for an n-bit block cipher (Adopted ISO/IEC 10116:20176, fourth edition, 2017-07)
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CSA Preface
Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).
For brevity, this Standard will be referred to as CAN/CSA-ISO/IEC 10116 throughout.
This Standard supersedes CAN/CSA-ISO/IEC 10116:07 (adopted ISO/IEC 10116:2006). At the time of publication, ISO/IEC 10116:2017 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC.
The International Standard was reviewed by the CSA TCIT under the jurisdiction of the CSA Strategic Steering Committee on Information and Communications Technology and deemed acceptable for use in Canada. From time to time, ISO/IEC may publish addenda, corrigenda, etc. The TCIT will review these documents for approval and publication. For a listing, refer to the Current Standards Activities page at standardsactivities.csagroup.org. This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.
Scope
This document establishes five modes of operation for applications of an n-bit block cipher (e.g. protection of data during transmission or in storage). The defined modes only provide protection of data confidentiality. Protection of data integrity is not within the scope of this document. Also, most modes do not protect the confidentiality of message length information.
NOTE 1 Methods for protecting the integrity of data using a block cipher are provided in ISO/IEC 9797-1.
NOTE 2 Methods for simultaneously protecting the confidentiality and integrity of data are provided in ISO/IEC 19772.
This document specifies the modes of operation and gives recommendations for choosing values of parameters (as appropriate).
NOTE 3 The modes of operation specified in this document have been assigned object identifiers in accordance with ISO/IEC 9834. The list of assigned object identifiers is given in Annex A. In applications in which object identifiers are used, the object identifiers specified in Annex A are to be used in preference to any other object identifiers that can exist for the mode concerned.
NOTE 4 Annex B contains comments on the properties of each mode and important security guidance.
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