Design of new protocol for secure communication of Messages
T. ChalamaReddy, Ravi Seshadri · 2013
Security for computers and networks has increased in importance, as end users have become more aware of the value of the vast amounts of data being accumulated and the need to protect that data, as companies that do sensitive work, such as those with defense contracts, military activities, banking, are often heavily involved in data security. As the scope of the network is increased a lot, data security became a main network concept. Suppose sender wants to send a message to receiver securely, so that no eavesdropper can read the message. Authentication of messages and communication play a vital role in the present day business transactions. With help of various symmetric, asymmetric and hash algorithms, ourprotocol achieves three cryptographic primitives such as confidentiality, authentication and integrity for communication of messages. This protocol assumes that two communicating parties share a common session key and secrete value. Sender computes the hash value over the concatenation of message and secretes value and appends it to message,andthen result is compressed. The compressed message is encrypted by using conventional encryption algorithm (AES) with a session key. To protect the session key and secrete value, sender encrypts combined session key and secrete value using public key encryption algorithm(ECC) with the recipient's public key and the result is appended to compressed message, and then transmitted to receiver. Later the intended receiver applies the reverse process to obtain the original message, and verifies authentication and integrity of message. This protocol also provides better security than PGP protocol used in email security.