Cryptology ePrint Archive: Report 2002/062

ABC - A Block Cipher

Dieter Schmidt

Abstract: The author proposes a block cipher wich is easy to implement in software on modern 32 bit microprocessorsThe building blocks of the cipher are from the block ciphers MMB and SAFER. The cipher may be expanded for use with future 64 bit processors. Also a new diffusion layer, developed from the SAFER diffusion layer is proposed. It has complextity $\mathcal{O}(n \enspace log \enspace n)$ and the author conjectures that it is MDS. Diffusion layers currently known to be MDS are based on matrices and thus have complexity $\mathcal{O}(n^2)$.

Category / Keywords: block cipher, SPN, MDS

Date: received 17 May 2002, last revised 26 May 2002

Contact author: schmidt at aleph physik uni-siegen de

Available format(s): Postscript (PS) | Compressed Postscript (PS.GZ) | PDF | BibTeX Citation

Note: Revision due to typeset error and new information regarding intellectual property status of block cipher MMB

Version: 20020527:060919 (All versions of this report)

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