ANALYSIS OF THE SECURITY OF AES, DES, 3DES AND IDEA NXT ALGORITHM

In the modern cryptography symmetric encryption is widely used since it is faster than public key encryption therefore it is used in various internet communication like Transport Layer Security (TLS) and Internet Protocol security (IPSec) use for session keys, used for sending confidential mail etc. So it becomes important to take major action for the security of symmetric key encryption. In the present paper, we have discussed the various forms of symmetric encryption and their security. We have further analysed the common attacks on these symmetric encryp tions