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ISO/IEC 18033-7:2022

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ISO/IEC 18033-7:2022 Information security - Encryption algorithms - Part 7: Tweakable block ciphers

standard by International Organization for Standardization/International Electrotechnical Commission, 04/01/2022

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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.