A REVIEW ON CRYPTOGRAPHY, ATTACKS AND CYBER SECURITY

COMPUTER SCIENCE & ENGINEERING

A big part of the population of the world relies on the internet to communication in their social, marketing and commercial purposes. Actually on serious note internet is the powerful tool for the communication technology. On the internet communication happen in the form of data (text message, files or any kind of electronic mail). Data confidentiality becomes very challenging as the communication technology is expanded day by day. The risk of the data loose or stolen simultaneously increases by the cyber criminals (hacker or attacker). Hackers attack on the communication systems, become the communication medium insecure and after that stolen the confidential information for their financial purposes and misuse data in the illegal activity. Attacks are typically classified based on the action performed by the attacker; an attack thus can be the active or passive. In active attack the information is modified in an unauthorized manner where as the main target of the passive attack is that to obtain unauthorized access to the information. Encrypt data is the best way to secure the data from unauthorized users or aggressor. Cryptography is the technique to encrypt the confidential data using the various mathematical operations and algorithms. Cryptography is one such way to make sure that confidentiality, authentication, integrity, availability and identification of user data can be maintained as well as security and privacy of data can be provided to the user.

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