Description: The Final Year CSE Seminar Topic Cryptography and Network Security talks about Cryptography and its use in securing networked community. The paper suggests that just as insurance protects valuables. Cryptography protects invaluable database that cannot be shared with one and all. Since the world now has become a global village there is every need to share information/data incessantly. In a scenario like this securing the data and protecting it becomes quintessential to the smooth functioning of official processes. Cryptography is an effective way of securing the data not just for applications that have secure networking but also for applications that are ignorant of such a thing.
The paper suggests that the IP-level security covers three functional areas: authentication, confidentiality and key management.
What is ESP:
The paper Cryptography and Network Security also talks about the Encapsulating Security payload (ESP). The Encapsulating Security Payload (ESP) protocol proclaims authentication, and also offers privacy. When ESP is used with confidentiality enabled, there ESP provides limited traffic flow confidentiality, i.e., provisions for concealing packet length, and to facilitate efficient generation and discard of dummy packets. ESP offer access control, enforced through the distribution of cryptographic keys and the management of traffic flows as dictated by the Security Policy Database.
The paper Cryptography and Network Security explains the functions of IPsec. It says that IPsec is designed to provide interoperable, high quality, cryptographically based security for IPv4 and IPv6. The security services offered includes access control, connectionless integrity, data origin authentication, detection and rejection of replays sequence confidentiality (via encryption), and limited traffic flow confidentiality.
The paper Cryptography and Network Security concludes on a note that IPsec is transparent to applications and poses no threat to upper level applications. It can provide enough security to users and can certainly help create a secure virtual sub network within an organization. The Encapsulating Security Payload (ESP) header is designed to provide a mix of security services in IPv4 and IPv6. The Encapsulating Security Payload (ESP) provides mechanisms for protecting data being sent over an IPsec Security.
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