Security Vulneregories Of Key Agreement Protocols

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

The authentication process is a necessity for safeguarding systems against various forms of security threats, such as password-cracking tools, brute-force or wordbook attacks, abuse of system access rights, impersonation of attested users, and last but not least reply attacks just to name a

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

[6] M. Bellare and A. Palacio. Gq and schnorr identification schemes:Proofs of security against impersonation under active and concurrentattacks. In CRYPTO, pages 162–177, 2002.

This standard provides for user/device authentication as well as distribution and management of encryption keys.

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].

3 – Authentication can be handled through pre shared keys. These are better than certificates as they are less complex and easier to implement. The time it takes to authenticate is the same whether it is a certificate or a pre shared key. A pre shared host is issued with a predetermination key which is used for authentication. There is only one problem with a pre shared key: that it rarely changes. There are many organisations that use the same key to manage multiple remote hosts. This could be a security threat for the organisation.

The Internet Protocol (IP) has some vulnerability that can be exploited to transfer information along the network by being anonymous. Some attempts have been made using IPv4 but now since IPv6 is the new mode of network the challenge is to design it to fit the new trend.

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

Keys should not be used as a primary access control as they can be easily copied, door locks are susceptible to “bump” attacks, and there is often no record of who utilized a key to gain access. Key security can be enhanced by serialize the key, keeping strict key logs, and policies should inform key users of their responsibilities (Gregory, 2010).

Public key infrastructure, known as PKI supports the distribution and identification of public encryption keys which allows users and computers to securely exchange data over the internet and networks to confirm the identity of the other party. Without PKI, sensitive information can still be encrypted and exchanged, but there would be no assurance of the identity of the other party. Any form of sensitive data exchanged over the Internet is reliant on PKI for security.

Public key infrastructures (PKIs) are necessary to help ascertain the identity of different people, devices, and services. In a nutshell, PKIs go way beyond the use of user IDs and passwords, employing cryptographic technologies such as digital signatures and digital certificates to create unique credentials that can be validated beyond reasonable doubt and on a mass scale ("What is pki?" n.d., p. 1).

The framework proposes a characteristic based secure information recovery plot utilizing CP-ABE for decentralized DTNs. The proposed plot highlights the accompanying accomplishments. In the first place, quick property disavowal upgrades in reverse/forward mystery of secret information by decreasing the windows of helplessness. Second, encryptors can characterize a fine-grained get to approach utilizing any monotone get to structure under qualities issued from any picked set of specialists. Third, the key escrow issue is settled by a without escrow key issuing convention that adventures the normal for the decentralized DTN design. The key issuing convention produces and issues client mystery keys by playing out a safe two-party calculation (2PC) convention among the key specialists with their own particular ace privileged insights. The 2PC

Group key management plays an important role in group communication. A common group key is required for individual users in the group for secure multicast communication. Group key have to be updated frequently whenever member joins and leaves in order to provide forward and backward secrecy. Forward secrecy ensures that an expelled member cannot gather information about future multicast communication and backward secrecy ensures that a joining member cannot gather information about past multicast communication [11]. For

In this paper we will present you a brief summary of recent attacks on Elliptic Curve Cryptography and countermeasure of these attacks. We will introduce only attacks which have been either performed practically or there is proof of concept of these attacks. We will not introduce any new attack on Elliptic Curve Cryptography. There is no perfect countermeasure against these attacks.