Reach reliable decision by using secret agreement method

Traditionally, it is very important to deliver data secretly and at low cost in a distributed environment. Using a reliable method to assist in communicating with each other needs to be discussed. Thus, we propose the two-phase agreement (TPA) protocol to solve those problems by verifying the received messages and achieve the agreement. The TPA protocol will assist the organization in achieving agreement and generate a common key to verify it. Similarly, there are many faults and attacks in the network, such as interruption, interception, modification and fabrication. The messages from a source might be changed. However we can use the TPA protocol to remove these faulty influences. The proposed TPA protocol doesn´t only decrease the complexity of messages but also increases the capability of fault tolerance. Similarly, it is more reliable via the secret key in a real distributed system. This protocol can solve the agreement problem in net-meeting between arbitrary processors, like sub-company communication with the main-company or makes a decision in the company conference.