Cryptology ePrint Archive: Report 2015/1080

Variations to the cryptographics algorithms AES and TWOFISH

P. Freyre, N. Díaz and O. Cuellar

Abstract: The cryptographic algorithms AES and Twofish guarantee a high diffusion by the use of fixed 4x4 MDS matrices. In this article variations to the algorithms AES and Twofish are made. They allow that the process of cipher - decipher come true with MDS matrices selected randomly from the set of all MDS matrices with the use of proposed algorithm. A new key schedule with a high diffusion is designed for the algorithm AES. Besides proposed algorithm generate new S - box that depends of the key.

Category / Keywords: secret-key cryptography / Block Cipher, AES, Twofish, S-boxes, MDS matrix.

Date: received 6 Nov 2015, last revised 28 Mar 2016

Contact author: pfreyre at matcom uh cu

Available format(s): PDF | BibTeX Citation

Version: 20190217:224315 (All versions of this report)

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