Key distribution techniques in symmetric key cryptography

Abstract as in symmetric encryption we make use of the same key for encryption as well as for decryption. Therefore for symmetric encryption to work the two parties who want to communicate with each other must share the same key and that key must be protected from access by other. Key distribution can be stated as a technique that refers to the means of delivering a key to two parties who wish to exchange data without allowing others to see the key. In this paper I will discuss various technique of distributing public keys between two parties. I will also focus on how to secure the keys.