Abstract
Data shared in the cloud allows many numerous people exchange their data in a group that helps
improve environmental work efficiency. It is a challenging task today how we can assure data security in a single group
and also how to share the data with multiple group members, and for it we use a key agreement protocol to share our
data in a safe group. In this article we demonstrate a new conceptual agreement protocol, which contributes to the
participation of many users who assist may expand many participants in the cloud environment based on the building of
the block design, by using the symmetrical block design. Based on the group data sharing of the model. For several
participants, we provide a regular approach to retrieve some shared conference key. A key agreement protocol is
established, which includes the key to the Conference, in order to ensure the protection of your communication and to
ensure that information exchange is secured. Cluster securing plays an essential part in the essential agreement