OS GSO ISO/IEC 18033-7:2025

ISO/IEC 18033-7:2022

Omani Standard Current Edition · Approved on 22 April 2025

Information security — Encryption algorithms — Part 7: Tweakable block ciphers

OS GSO ISO/IEC 18033-7:2025 Files

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OS GSO ISO/IEC 18033-7:2025 Scope

This document specifies tweakable block ciphers. A tweakable block cipher is a family of n-bit permutations parametrized by a secret key value and a public tweak value. Such primitives are generic tools that can be used as building blocks to construct cryptographic schemes such as encryption, Message Authentication Codes, authenticated encryption, etc.

A total of five different tweakable block ciphers are defined. They are categorized in Table 1.

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