International Journal of Engineering and Advanced Technology (IJEAT)
Secure transmission of message between the sender and receiver is carried out through a tool called as cryptography. Traditional cryptographically methods use either public key which is known to everyone or on the private key. In either case the eavesdroppers are able to detect the key and hence find the message transmitted without the knowledge of the sender and receiver. Quantum cryptography is a special form of cryptography which uses the quantum mechanics to ensure unconditional security towards the transmitted message.