An Approach to Improve the Data Security using Encryption and Decryption Technique

Cryptography is an art and science. It is a playing major role in information and security division. The main aim of the cryptography is protecting the data from unauthorized users or hackers. “Cryptography is subject contains two parts one is encryption and another one decryption. Encryption is a process converting the plain text to cipher text using some keys. Decryption is a process of converting the cipher text to plain text using the keys”. Cryptographic algorithms play a vital role in providing the data security.In the today’s world, security is required to transmit confidential information over the network. Security is also demanding in wide range of applications. Encryption of data is an important topic for research, as secure and efficient algorithms are needed that allow optimized encryption and decryption of data. There are several algorithms in cryptography to encode and decode the data based on the key.The paper can give brief description about symmetric key algorithm and proposed new algorithm in symmetric key cryptography. The proposed algorithm contains two levels of Exclusive OR (XOR) operation. This algorithm is useful in transmission of messages and data between one user and another.