Today, communication is main part of everybody’s life. Security is the most important issue in any communication. So we need a secured system to exchange data securely between users. For this purpose of security there are various techniques like cryptography, watermarking and steganography. Steganography is used to transmit information in covered form. In steganography we hide the presence of d...

The difficulty of renumbering a network – i.e., adding and removing an IP prefix due to a provider change or a network merging – is a real issue for most network administrators. It is even considered by a lot of people as a bottleneck issue in adopting Provider Aggregatable addressing for IPv6. In this paper, we propose a set of macros that can be used in configuration files to permit network a...

in this paper, a new revenue efficiency data envelopment analysis (re-dea) approach is considered for finding the most revenue efficient unit with price uncertainty in both optimistic and pessimistic perspectives. the optimistic and pessimistic perspectives use efficient frontier and inefficient frontier, respectively. an integrated model is introduced to find decision making units (dmus) that ...

    In this paper, a new revenue efficiency data envelopment analysis (RE-DEA) approach is considered for finding the most revenue efficient unit with price uncertainty in both optimistic and pessimistic perspectives. The optimistic and pessimistic perspectives use efficient frontier and inefficient frontier, respectively. An integrated model is introduced to find decision making units (DMUs) t...

This work proposes a high-capacity scheme for separable reversible data hiding in encrypted images. At the sender side, the original uncompressed image is encrypted using an encryption key. One or several data hiders use the MSB of some image pixels to hide additional data. Given the encrypted image containing this additional data, with only one of those data hiding keys, the receiver can extra...

At present, fresh agricultural products have begun to take the scale of industrialization, the majority have been in full accordance with high yield and high quality, efficient and safe production requirements, but due to the characteristics of fresh agricultural products, more and more attention have been aroused, the traditional marketing model is facing a bottleneck, the various aspects of n...

We present several attacks on RSA that factor the modulus in polynomial time under the condition that a fraction of the most significant bits or least significant bits of the private exponent is available to the attacker. Our new attacks on RSA are the first attacks of this type that work up to full size public or private exponent.

Phylogenetic relationships between the known genera of the order Misophrioida permit the identi® cation of two lineages: one consisting of the family Misophriidae Brady, 1878 which comprises seven genera, and a new, monotypic family, the Palpophriidae Boxshall & Jaume, 1999; the other consisting of another new family, the SpeleophriidaeBoxshall & Jaume, 1999, comprising eight genera. Habitat ex...

This paper gives the first bit security result for the elliptic curve Diffie–Hellman key exchange protocol for elliptic curves defined over prime fields. About 5/6 of the most significant bits of the x-coordinate of the Diffie–Hellman key are as hard to compute as the entire key. A similar result can be derived for the 5/6 lower bits. The paper also generalizes and improves the result for ellip...