During a conditional disclosure of secrets (CDS) protocol, Alice obtains a secret, held by Bob, if and only if her inputs to the protocol were “valid”. As an output masking technique, CDS protocol can be used as a subroutine in other protocols to guarantee either Bob-privacy or correctness against a malicious Alice. Using a simple seeded randomness extractor, we extend the Aiello-Ishai-Reingold...

Recently, Wang (2016) introduced a random linear code based quantum resistant public key encryption scheme RLCE which is a variant of McEliece encryption scheme. In this paper, we introduce a revised version of the RLCE encryption scheme. The revised RLCE schemes are more efficient than the original RLCE scheme. Specifically, it is shown that RLCE schemes have smaller public key sizes compared ...

The last few months, several new results appeared about the OAEP construction, and namely the RSA–OAEP cryptosystem. Whereas OAEP was believed to provide the highest security level (IND-CCA2), with an efficient exact security level, the effective security result had been showed to be incomplete. Nevertheless, the particular instantiation with RSA (which is anyway almost the sole application) ha...

A novel protein-deamidating enzyme, which has potential for industrial applications, was purified from the culture supernatant of Chryseobacterium proteolyticum strain 9670(T) isolated from rice field soil in Tsukuba, Japan. The deamidating activities on carboxybenzoxy (Cbz)-Gln-Gly and caseins and protease activity were produced synchronously by the isolate. Both deamidating activities were el...

N-acylhomoserine lactones (AHLs) are used as quorum-sensing (QS) signal molecules by many gram-negative bacteria. We have reported that Chryseobacterium sp. strain StRB126, which was isolated from the root surface of potato, has AHL-degrading activity. In this study, we cloned and characterized the aidC gene from the genomic library of StRB126. AidC has AHL-degrading activity and shows homology...

Take-all, caused by Gaeumannomyces graminis var. tritici, is one of the most important fungal diseases of wheat worldwide. Knowing that microbe-based suppression of the disease occurs in monoculture wheat fields following severe outbreaks of take-all, we analyzed the changes in rhizosphere bacterial communities following infection by the take-all pathogen. Several bacterial populations were mor...

Many studies have been pointing to a high diversity of bacteria associated to legume root nodules. Even though most of these bacteria do not form nodules with legumes themselves, it was shown that they might enter infection threads when co-inoculated with rhizobial strains. The aim of this work was to describe the diversity of bacterial communities associated with cowpea (Vigna unguiculata L. W...

Osburn, Brown and Werkman (1937) observed a critical pH level in the dissimilation of glucose by Clostridium butylicum near 6.3. Above this level butyl alcohol and isopropyl alcohol were not formed. The significance of this critical pH was attributed to the fact that in mixtures of acetic (or butyric) acid and its sodium salt below 6.3 there will be "free" acid, i.e., acid which can be distille...

*Corresponding author; mailing address: Jean-Denis Docquier, Dipartimento di Biologia Molecolare, Università di Siena, Policlinico “Le Scotte”, I-53100 Siena, Italy. Tel. 39 0577 233134; Fax: 39 0577 233870; e-mail: [email protected]. Copyright © 2009, American Society for Microbiology and/or the Listed Authors/Institutions. All Rights Reserved. Antimicrob. Agents Chemother. doi:10.1128/AAC.0...