Review on Network Security and Cryptography

International Journal of Computer Applications Technology and Research, 2013

Cryptography plays a major role in securing data. It is used to ensure that the contents of a message are confidentially transmitted and would not be altered. Network security is most vital component in information security as it refers to all hardware and software function, characteristics, features, operational procedures, accountability, access control, and administrative and management policy. Cryptography is central to IT security challenges, since it underpins privacy, confidentiality and identity, which together provide the fundamentals for trusted e-commerce and secure communication. There is a broad range of cryptographic algorithms that are used for securing networks and presently continuous researches on the new cryptographic algorithms are going on for evolving more advanced techniques for secures communication.

Nowadays the applications like Internet and networks are growing very fast, thereby the importance and the value of the exchanged data over the internet or other media types are increasing. For secure communication the cryptography is essential, therefore we have various cryptography algorithms for securing the data over internet. This paper discuss the state of the art for a broad range of cryptographic algorithms that are used in networking applications. A comparison table is created for various cryptography algorithms used as per the requirement on different networks.

Cryptography means secret writing. When the data are transferred from sender to receiver over the network through information channel any third parties can intensively read and may modify the data. Here in this paper we elaborate how cryptography will help to secure the data between authorized people. In order to transfer secure data the data will convert to unreadable form before transmitting to the channel. The cryptography applications range have been expanded a lot in the modern area after the development of communication means; cryptography is essentially required to ensure that data are protected against penetrations and to prevent espionage. Also, cryptography is a powerful mean in securing e-commerce. This paper focuses on analysing different types of cryptography, concept of encryption and decryption, a brief introduction to cryptography techniques. If we are taking about security of information then following services come in mind i.e. Confidentiality (privacy of information), Authentication, Integrity (has not been altered) This paper also provides a detailed description of cryptography techniques in Symmetric encryption and a public key cryptography algorithm RSA in Asymmetric encryption.

2012

Network Security is the most vital component in information security because it is responsible for securing all information passed through networked computers. Network Security refers to all hardware and software functions, characteristics, features, operational procedures, accountability, measures, access control, and administrative and management policy required to provide an acceptable level of protection for Hardware and Software , and information in a network. Only one particular element underlies many of the security mechanisms in use: Cryptographic techniques; hence our focus is on this area Cryptography. Cryptography is an emerging technology, which is important for network security. Research on cryptography is still in its developing stages and a considerable research effort is still required for secured communication.

IRJET, 2020

This paper aims to provide broad view of usage of cryptography in network security. Cryptography is defined as the science of protecting the data. On other hand network security is the process of keeping the information private, secret and secure from unauthorized and illegal access. Cryptography and network security is used to protect network and data communication takes place over wireless network and data which is stored in our systems. Security in this modern scenario has become a more and more sensible and critical issue, because the usage of computers and data networks go on increasing. Network security and cryptography is the subject which provides solutions to protect our information and data in digital form and to avoid security attacks and offers security services. Cryptography and network security is used in various applications like banking, shopping, government agencies, organization, military, secret services, enterprises, business, and in daily lives of peoples. In Cryptography various techniques and algorithms are used to provide security to networks and data. In this paper, we discussed about various encryption and decryption techniques, cryptographic principles, cryptosystem types and cryptographic model and its algorithm. There are six main security services which are availability, confidentiality, authentication, integrity, non-repudiation and access control. There are various security threats for our information like interception, interruption, unauthorized access and modification.

International Journal for Recent Development in Science & Technology, 2020

Network Security & Cryptography is a concept to protect network and data transmission over wireless network. Data Security is the main aspect of secure data transmission over unreliable network. Network security involves the authorization of access to data in a network, which is controlled by the network administrator. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both public and private, that are used in everyday jobs conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access. Network security is involved in organizations, enterprises, and other types of institutions. In this paper we also studied cryptography along with its principles. Cryptographic systems with ciphers are described. The cryptographic models and algorithms are outlined.

NETWORK SECURITY AND CRYPTOGRAPHY , 2024

The idea of network security involves using encryption to secure data transmitted wirelessly and guarantee message contents remain confidential. The primary component of safe data transfer across an unstable network is data security. Authorizing access to data on a network, which is under the network administrator's authority, is a component of network security. Both the public and private sectors of computer networks use network security. Both private and public networks are utilized in businesses, organizations, universities, etc. Ensuring the security of end systems and the network as a whole is the responsibility of network security. Numerous applications, including those in banks, businesses, organizations, government agencies, and enterprises, require network security. Cryptography: When a sender applies a hash function-a cryptographic operation-to the original message, nobody else can decipher the message received save for the person holding the decipher key. A hash function is a mathematical representation of data, and the receiver determines the value of this hash function whenever any new data is received. Data security is achieved via a method known as cryptography. Therefore, it can be said that cryptography is a cutting-edge technology that is crucial to network security. Early on, however limited in its application, encryption was utilized to safeguard diplomatic correspondence, military secrets, and national security. The development of communication has led to a significant expansion in the spectrum of applications for cryptography in this modern domain. Cryptography is a vital tool for protecting electronic commerce and is practically necessary to guarantee that data is safe from intrusions.

— Cryptography plays a vital role in information security system against various types of attacks. This security mechanism uses some algorithms to scramble data into unreadable text which can be only being decrypted by party those possesses the associated key. The two important characteristics that identify and differentiate encryption algorithms from another are their capability to secure the protected data against attacks and their speed and effectiveness in securing the data. Cryptography is method that provides the security mechanism in timely driven fashion. Main objective of this paper is to compare the most commonly used algorithms for data encryption. Main concern in this paper is the performance analysis of different algorithms under different settings.

Network Security is the most vital component in information security because it is responsible for securing all information passed through networked computers. Network Security refers to all hardware and software functions, characteristics, features, operational procedures, accountability, measures, access control, and administrative and management policy required to provide an acceptable level of protection for Hardware and Software , and information in a network. Only one particular element underlies many of the security mechanisms in use: Cryptographic techniques; hence our focus is on this area Cryptography. Cryptography is an emerging technology, which is important for network security. Research on cryptography is still in its developing stages and a considerable research effort is still required for secured communication.