Showing papers on "Null cipher published in 2004"
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TL;DR: In this paper, a stream cipher based algorithm for computing message authentication codes is described, which employs the internal state of the underlying cipher to minimize the required additional-to-encryption computational effort and maintain general simplicity of the design.
Abstract: A stream cipher based algorithm for computing Message Authentication Codes is described. The algorithm employs the internal state of the underlying cipher to minimize the required additional-toencryption computational effort and maintain general simplicity of the design. The scheme appears to provide proper statistical properties, a comfortable level of resistance against forgery attacks in a chosen ciphertext attack model and high efficiency in software implementations.
9 citations
TL;DR: The design of the DES has always been surrounded with mystery, so a method to construct equivalent descriptions of the cipher is presented, which leads to an alternative description with a more simple structure, which may lead to a better understanding of the Cipher.
Abstract: The design of the DES has always been surrounded with mystery. A method to construct equivalent descriptions of the cipher is presented. This leads to an alternative description with a more simple structure, which in turn may lead to a better understanding of the cipher.
3 citations