An efficient group authentication mechanism supporting key confidentiality, key freshness and key authentication in cloud computing

A Group authentication emphasis on communication between the members of a group and then authenticates the members. The main purpose of group communication is to share and exchange ideas and messages with different members of the group. The messages are sent to each other in encrypted form to enhance security. The group manager has the responsibility of overall control over the group. A group key is there for each group which generates the session keys which are used by the group members to share the secret messages.