A vehicular ad hoc network (VANET) uses cars as mobile nodes in a MANET to create a mobile network. In the vehicular ad hoc networks the security is an important concern. For security purpose, Vehicular ad hoc networks (VANETs) adopt the Public Key Infrastructure (PKI) and Certificate Revocation Lists (CRLs).This PKI system, the authentication of a received message is performed by checking if t...

In mobile ad hoc wireless network (MANET), secure communication is more challenging task due to its fundamental characteristics like infrastructure less, wireless link, distributed cooperation, dynamic topology, lack of association, resource constrained and physical vulnerability of node. In MANET, attacks can be broadly classified in two categories: routing attacks and data forwarding attacks....

Many efficient cryptographic hash function design strategies have been explored recently, not least because of the SHA-3 competition. Almost exclusively these design are geared towards good performance for long inputs. However, various use cases exist where performance on short inputs matters more. An example is HMAC, and such functions also constituting the bottleneck of various hash-based sig...

The use of cryptographic hash functions like MD5 or SHA for message authentication has become a standard approach in many Internet applications and protocols. Though very easy to implement, these mechanisms are usually based on ad hoc techniques that lack a sound security analysis. We present new constructions of message authentication schemes based on a cryptographic hash function. Our schemes...

Concanavalin A (Con A) and wheat germ agglutinin (WGA) are frequently used as stimuli of neutrophils and macrophages. While the effects of these lectins on cell function are presumably mediated by interaction with cell-surface molecules, the target structures on the cell surface involved are not well defined. We have used the techniques of lactoperoxidase catalyzed cell-surface iodination, lect...

In a recent note to the NIST hash-forum list, the following observation was presented: narrow-pipe hash functions differ significantly from ideal random functions H : {0, 1} → {0, 1} that map bit strings from a big domain where N = n + m, m ≥ n (n = 256 or n = 512). Namely, for an ideal random function with a big domain space {0, 1} and a finite co-domain space Y = {0, 1}, for every element y ∈...

Fourier transform infrared (FTIR) microspectroscopy images contain information from the whole infrared spectrum used for microspectroscopic analyses. In combination with the FTIR image, visible light images are used to depict the area from which the FTIR spectral image was sampled. These two images are traditionally acquired as separate files. This paper proposes a histogram shifting-based data...

Network coding allows intermediate nodes to encode data packets, which increases network throughput and enhances robustness. However, once the node injects corrupted data blocks into a network, the polluted data blocks will propagate quickly with network coding. In the existing approach a new homomorphic MAC scheme called SpaceMac, which makes it possible for an intermediate node validating whe...

This paper proposes a VPN Accelerator Board (VPN-AB), a virtual private network (VPN) protocol designed for trust channel security system (TCSS). TCSS supports safety communication channel between security nodes in internet. It furnishes authentication, confidentiality, integrity, and access control to security node to transmit data packets with IPsec protocol. TCSS consists of internet key exc...

We present the motivation, use-case and requirements of a clinical case research network that would allow biomedical researchers to perform retrospective analysis on de-identified clinical cases joined across a large scale (nationwide) distributed network. Based on semi-join adaptive plans for fusion-queries, in this paper we discuss how joining can be done in a way that protects the privacy of...