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Zcipher Algorithm Specification
"... This note describes the Zcipher algorithm. It is a symmetric encryption/decryption cryptographic algorithm, designed to be secure and high-performance with small memory footprint and simple structure. 1. Algorithm Description Zcipher is a 64-bit codebook, parameterized by a 128-bit cryptovariable. T ..."
Abstract
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. The codebook is a Feistel network, where 64-bit input data splits in two 32-bit values and 128-bit cryptovariable splits in four 32-bit values. 1.1 Encryption Figure 1 demonstrates a single encryption round; {x, y} is an input data and vi=1,2,3,4 is a cryptovariable, all arithmetic operations are mod 2 32
Automatic Enumeration of (Related-key) Differential and Linear Characteristics with Predefined Properties and Its Applications
"... Abstract. In this paper, we investigate the Mixed-integer Linear Programming (MILP) modelling of the differential and linear behavior of a wide rang of block ciphers. The differential and linear behavior of the transformations involved in a block cipher can be described by a set P ⊆ {0, 1}n ⊆ Rn. We ..."
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0-1 solution of the MILP model generated by the new method corresponds to a valid characteristic, and therefore there is no need to repeatedly add valid cutting-off inequalities into the MILP model as is done in Sun et al.’s method; the new method is more powerful which allows us to get the exact
Towards Secure Electronic Workflows Examples of Applied PKI Supervisor:
, 2006
"... Hiermit versichere ich, die vorliegende Diplomarbeit selbstständig und unter ausschliesslicher Verwendung der angegebenen Quellen und Hilfsmittel angefertigt zu haben. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehörde vorgelegen. Darmstadt, 14. Februar 2006 ..."
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Hiermit versichere ich, die vorliegende Diplomarbeit selbstständig und unter ausschliesslicher Verwendung der angegebenen Quellen und Hilfsmittel angefertigt zu haben. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehörde vorgelegen. Darmstadt, 14. Februar 2006
