Mode d'initiation des bourgeons hypocotylaires chezAlliaria officinalisL.

A proposed mode for triple-DES encryption

We propose a new mode of multiple encryption-triple-DES external feedback cipher block chaining with output feedback masking. The aim is to provide increased protection against certain attacks (dictionary attacks and matching ciphertext attacks) which exploit the short message-block size of DES. The new mode obtains this protection through the introduction of secret masking values that are excl...

Composition, Structure, Et Mode De Formation Des Concrétions Minérales Dans L'intestin Moyen Des Homopteres Cercopides

The granules which occur in the cells of a part of the midgut wall in Cercopid larvae and adults (Homoptera) have been studied by biochemical and cytochemical methods and by electron microscopy. The granules have a diameter up to about 2micro and contain calcium, magnesium, iron, carbonates, and phosphates. Protein and acid mucopolysaccharide have also been detected. A chromatographic study sho...

Etude sur l'Agalaxic contagieuse des chèvres et des moutons

Les maladies des animaux dues à des Clostridium welchii

Cryptanalysis of the CFB Mode of the DES with a Reduced Number of Rounds

Three attacks on the DES with a reduced number of rounds in the Cipher Feedback Mode (CFB) are studied, namely a meet in the middle attack, a differential attack, and a linear attack. These attacks are based on the same principles as the corresponding attacks on the ECB mode. They are compared to the three basic attacks on the CFB mode. In 8-bit CFB and with 8 rounds in stead of 16, a different...