"E-government" refers to the process of using advanced information and communication technology (ICT) for automating both the internal operations of the government agents (G2G) and its external interactions with citizens (G2C) and businesses (G2B). In G2G type, addressing information sharing among government agencies is one of the most important issues for development of national e-government architecture. With efficient information sharing solutions, government agents can be able to predict the security risks and attacks, including terrorist attack similar as 911 attack on American soil. However, building secure information sharing mechanism among government agencies is not trivial because they worry about that their interests may be jeopardized when share their information with other agencies. In this paper, a distributed information sharing model is proposed and the technique standard support of the model is analyzed. With the secure e-government information sharing solutions, the cost of coping with government information exchange and agencies cooperation will be lowered and the capability and efficiency of agencies' collaboration will be increased.