ISO/IEC 29192-2:2019
Information security — Lightweight cryptography — Part 2: Block ciphers
This document specifies three block ciphers suitable for applications requiring lightweight cryptographic implementations:
— PRESENT: a lightweight block cipher with a block size of 64 bits and a key size of 80 or 128 bits;
— CLEFIA: a lightweight block cipher with a block size of 128 bits and a key size of 128, 192 or 256 bits;
— LEA: a lightweight block cipher with a block size of 128 bits and a key size of 128, 192 or 256 bits.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Lightweight block cipher with a block size of 64 bits
5.1 General
5.2 PRESENT
5.2.1 PRESENT algorithm
5.2.2 PRESENT specific notation
5.2.3 PRESENT encryption
5.2.4 PRESENT decryption
5.2.5 PRESENT transformations
5.2.6 PRESENT key schedule
6 Lightweight block ciphers with a block size of 128 bits
6.1 General
6.2 CLEFIA
6.2.1 CLEFIA algorithm
6.2.2 CLEFIA specific notation
6.2.3 CLEFIA encryption
6.2.4 CLEFIA decryption
6.2.5 CLEFIA building blocks
6.2.6 CLEFIA key schedule
6.3 LEA
6.3.1 LEA algorithm
6.3.2 LEA specific notation
6.3.3 LEA encryption
6.3.4 LEA decryption
6.3.5 LEA key schedule
Annex A (normative) Object identifiers
Annex B (informative) Numerical examples
Annex C (informative) Feature tables
Annex D (informative) A limitation of a block cipher under a single key
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Lightweight block cipher with a block size of 64 bits
5.1 General
5.2 PRESENT
5.2.1 PRESENT algorithm
5.2.2 PRESENT specific notation
5.2.3 PRESENT encryption
5.2.4 PRESENT decryption
5.2.5 PRESENT transformations
5.2.6 PRESENT key schedule
6 Lightweight block ciphers with a block size of 128 bits
6.1 General
6.2 CLEFIA
6.2.1 CLEFIA algorithm
6.2.2 CLEFIA specific notation
6.2.3 CLEFIA encryption
6.2.4 CLEFIA decryption
6.2.5 CLEFIA building blocks
6.2.6 CLEFIA key schedule
6.3 LEA
6.3.1 LEA algorithm
6.3.2 LEA specific notation
6.3.3 LEA encryption
6.3.4 LEA decryption
6.3.5 LEA key schedule
Annex A (normative) Object identifiers
Annex B (informative) Numerical examples
Annex C (informative) Feature tables
Annex D (informative) A limitation of a block cipher under a single key
Bibliography