PRESENT (cipher)

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Designers Orange Labs, Ruhr University Bochum and the Technical University of Denmark
First published 2007-08-23
Cipher detail
Key sizes 80 or 128 bits
Block sizes 64 bits
Structure SPN
Rounds 31

PRESENT is a new ultra lightweight block cipher algorithm, developed by the Orange Labs (France), Ruhr University Bochum (Germany) and the Technical University of Denmark. PRESENT is designed by Andrey Bogdanov, Lars R. Knudsen, Gregor Leander, Christof Paar, Axel Poschmann, Matthew J. B. Robshaw, Yannick Seurin, and C. Vikkelsoe. It is one of the most compact encryption methods ever designed and is 2.5 times smaller than AES (Advanced Encryption Standard).[1] The block size is 64 bits and the key size can be 80 bit or 128 bit. It is intended to be used in situations where low-power consumption and high chip efficiency is desired. The International Organization for Standardization and the International Electrotechnical Commission included PRESENT in the new international standard for lightweight cryptographic methods.[1][2]


  1. ^ a b Katholieke Universiteit Leuven. "Ultra-lightweight encryption method becomes international standard". Retrieved 2012-02-28. 
  2. ^ ISO. "ISO/IEC 29192-2:2012". Retrieved 2012-02-28. 

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