Key Security Position And Security

With the ever increasing surge of digital communications and transactions, a tougher level of security is essential in order to safeguard the user and their data transactions. Systems, personal computers, mobile phones, servers, and even smart cards are all being used everywhere and there is a need to secure communications. With the influx of data management, there is a clear race between the two challengers in the game known as Information Security between developers and the hackers. PKI was designed to influence the Internet infrastructure for means of communication (Samuelle, 2011). While decreasing antagonistic misuse of data, reducing data theft, and providing an extra layer of trust through key pairs and

Initially, an exchange protocol, such as a password- authenticated key exchange protocol, is used to create a shared secret. From the shared secret, two keys are created: a utilized key and a stored key. The utilized key is used to encrypt messages between nodes. When it is time to replace the utilized key to maintain security, the stored key is utilized to encrypt messages for generating/distributing a new shared secret. The new shared secret is then used to generate a new utilized key and a new stored key. This process may be repeated any number of times to maintain

Whitfield Diffie and Martin Hellman proposed a famous key exchange protocol in 1976 [16]. Diffie-Hellman key exchange (D-H), is a method for exchanging cryptographic keys that allow two parties to share public key for encrypting their messages over an insecure communication channel [16].

The Public Key Infrastructure (PKI) can be as strong as we want to design the system. Public Key Infrastructure (PKI) adoption is necessary in order to stay competitive and secure in today’s world. After implementation, data will more secure, customer will have more trust in operations, and this company will be compliant for years to

In military environment the data has to be transmitted in secured and faster way, even the network is suffer from frequent partitions and intermittent network connectivity. To transmit the data faster and in secure way Disruption-tolerant network is useful, which allow nodes to communicate each other even in this network environment. Rou and Chua h introduce external storage node in disruption tolerant network which stores data for allowing only authorized users to access the data. This Military Network requires sender to entrust their valuable data to users, there have been increasing security and privacy concerns on data. Several schemes employing attribute-based encryption (ABE) for access control over data. However, most of

The key distribution center comprises of two components, integrated into one server. These components are the authentication server and the ticket-granting server. Considering three entities, that is, the resource center, client and user Z, the request and authentication process works in the following way. The user Z feeds in a username and password into the client machine, which is encrypted to form a secret key. The user Z through the client then contacts the authentication server, which in turn sends the

Sometimes, people want to keep their information as authentic and secure as possible. This calls for the use of a few protocols that makes this a success. To achieve it, one can either make use of the AH or even ESP. research shows that the two can be used together or even separately. This essay will focus on the functionality of AH and ESP, their main activities and their advantages over each other.

Wireless communication and mobility introduced a new paradigm in Distributed Systems. We examined short-range wireless data transmission using mobile agent (developed using Android OS). Presence of mobility in distributed systems introduces new challenges of reliable and secure communication. In this project, we propose a secure way of communication via wireless network (comprised of P2P nodes) – Bluetooth and secure the data transmission using asymmetric cryptograph.

When one submits a request for information to a service, it being a HTTP or a SOAP request SMTP or other protocols, one must ensure that the service is indeed the entity that it claims to be (Rouse, 2013). In public key encryption, the verification of the public key origin is especially important when one is submitting encrypted information over the internet which it may be sensitive. Digital Certificates are the main method to verify identity of entities holding public keys rendering services over the internet (Image 1) (Rouse, 2013).

Generally, every public-key digital signature schemes is based on a mathematical problem. This problem is known as NP (Non-deterministic polynomial) hard problem. The problem is considered to be an NP hard mathematical problem if the validity of a proposed solution can be checked only in polynomial time.

In the group signature, public key of one group is connected with private keys of multiple groups. A message that is signed by any private keys of group can be verified with unique group public key. Therefore attacker cannot identify who is sender of the message. Author also proposed an efficient cooperative message authentication protocol, to reduce verification load where validity of safety message is examined by only those verifiers, who are selected on the basis of their position related to sender vehicles. This scheme helps to revoke malicious vehicles, maintaining system and various different security principles. If a verifier discovers an invalid regular broadcast message that is not verified as group signature, it broadcasts a warning message also called as cooperative authentication message to other vehicles.

Abstract— this paper is an involvement in the field of security study on mobile ad-hoc networks. Boundaries of the mobile ad hoc nodes have been considered in order to design a secure Geographic routing protocol that thwarts selfish and flooding attacks. We took the base of Ad hoc On Demand Routing Protocol (AODV); the most popular Routing protocol. The significance of the proposed protocol that should make sure security as wanted by providing a broad architecture of Secured PPEM Mechanism based Multi-Hop Strong Path Geographic Routing protocol (SMHSP) based on effective key management, secure neighbor detection, secure routing data’s, finding malicious nodes, and eliminating these nodes from routing table. Our results clearly show that our secured Geographic routing protocol increases the throughput and packet delivery ratio while it has a tolerable increase in the routing overhead and average delay. Also, security study proves in details that the proposed protocol

Abstract: Continuous user authentication is a critical prevention-based methodology with protect high security mobile ad-hoc networks (MANETs). Certificate revocation is an important security component in MANETs. A new method to enhance the effectiveness and efficiency of the scheme by employing a threshold based approach to restore a node’s accusation ability and to ensure sufficient normal nodes to accuse malicious nodes in MANETs. The user’s available relevant information on the system, and express an architecture that can be applied to a system of systems. Ad-hoc networks are an emerging area of mobile computing. In this paper, we attempt to analyze the demands of Ad-hoc environment. We focus on three areas of Ad-hoc networks, User Authentication, Ad-hoc routing, and intrusion detection.

MANETs will be consisting of many digital devices, in which the node exhibits mobile nature. This has been a great challenge for researchers to build MANET where peer to peer communication has its own advantages as it reduces the overhead of maintain and monitoring an centralized servers. Due the rapid growth of interest of mobile users towards social networking applications, that allows them to share their files. This results in increase in number of mobile users to get used or joining such networks day by day.

With ever increasing on road traffic and dynamic nature of road conditions an intelligent transportation system (ITS) is essential. Vehicular ad-hoc networks (VANETS) takes the responsibility in implementing ITS and is a promising communication scenario for traffic management and safety. VANETs possess unique characteristics like high mobility of nodes, rapid change in the neighbor nodes, stringent deadline for authentication, association times, no fixed infrastructure etc. Though VANETs closely resembles Mobile Ad-hoc Networks traditional security mechanisms are not suitable. This dissertation aims to describe and analyze the most representative VANET security developments and propose an efficient implementation focusing on key exchange and key management aspects, simulating and evaluating the same in OPNET environment.