BS ISO/IEC 11770-4:2017+A2:2021 - Page 2

Information technology. Security techniques. Key management. Mechanisms based on weak secrets | Status: Current, Under review

1 Scope This document defines key establishment mechanisms based on weak secrets, i.e. secrets that can be readily memorized by a human, and hence, secrets that will be chosen from a relatively small set of possibilities. It specifies cryptographic techniques specifically designed to establish one or more secretkeys based on a weak secret derived from a memorized password, while preventing offline brute-force attacks associated with the weak secret. This document is not applicable to the following aspects of key management:

• — life-cycle management of weak secrets, strong secrets, and established secretkeys;
• — mechanisms to store, archive, delete, destroy, etc. weak secrets, strong secrets, and established secretkeys.