• Ashutosh Upadhyay

With the internet having reached a level that merges with our lives, growing explosively during the last several decades, data security has become a main concern for anyone connected to the web. Data security ensures that our data is only accessible by the intended receiver and prevents any modification or alteration of data. In order to achieve this level of security, various algorithms and methods have been developed. Cryptography can be defined as techniques that cipher data, depending on specific algorithms that make the data unreadable to the human eye unless decrypted by algorithms that are predefined by the sender. Data security guarantees that only the intended recipient accesses our data and prohibits any change or alteration of the data. Cryptography can be described as techniques that encrypt data, based on different algorithms to make the data unreadable to the human eye unless decrypted by the sender's predefined algorithms. A cryptographic system's basic concept is to encrypt knowledge or data in order to achieve secrecy of the information in such a manner that an unauthorized person would not be able to derive its significance.

Cryptography, Security, Algorithm, Cipher, Decryption, Data Security.

"A Review Paper on Cryptography", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 1, page no.93-97, January 2019, Available :http://www.jetir.org/papers/JETIREO06027.pdf

"A Review Paper on Cryptography", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 1, page no. pp93-97, January 2019, Available at : http://www.jetir.org/papers/JETIREO06027.pdf