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Improved MARS Ciphering Using a Metamorphic-Enhanced Function

Authors: A. Baith Mohamed, Moataz M. Naguib, Hatem Khater


MARS is a shared-key (symmetric) block cipher algorithm supporting 128-bit block size and a variable key size of between 128 and 448 bits. MARS has a several rounds of cryptographic core that is designed to take advantage of the powerful results for improving security/performance tradeoff over existing ciphers. In this work, a new function added to improve the ciphering process it is called, Meta-Morphic function. This function use XOR, Rotating, Inverting and No-Operation logical operations before and after encryption process. The aim of these operations is to improve MARS cipher process and makes a high confusion criterion for the Ciphertext.

Keywords: Cryptography, Mars, AES, metamorphic, block cipher

Digital Object Identifier (DOI):

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