Study on cryptographic techniques in computer network security

Cryptography is the most popular approach for information security. 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. A number of cryptographic algorithms were developed in order to improve the information security. In this research study paper compares the cryptographic technique son the bases of their speed block size describes the necessary, newly developed, principal concepts for several cryptographic techniques with their merits, demerits used to secure the information.