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This paper mainly depicts the conceptual overview of vertical integration, semantic interoperability architecture such as Educational Sector Architectural Framework (ESAF) for New Zealand government and different interoperability framework solution for digital government. In this paper, we try to develop a secure information sharing approach for digital government to improve home land security. This approach is a role and cooperation based approach for security personnel of different government departments. In order to run any successful digital government of any country in the world, it is necessary to interact with their citizen and to share secure information via different network among the citizen or other government. Consequently, in order to smooth the progress of users to cooperate with and share information without darkness and flawlessly transversely different networks and databases universally, a safe and trusted information-sharing environment has been renowned as a very important requirement and to press forward homeland security endeavor. The key incentive following this research is to put up a secure and trusted information-sharing approach for government departments. This paper presents a proficient function and teamwork based information sharing approach for safe exchange of hush-hush and privileged information amid security personnels and government departments inside the national boundaries by means of public key cryptography. The expanded approach makes use of cryptographic hash function; public key cryptosystem and a unique and complex mapping function for securely swapping over secret information. Moreover, the projected approach facilitates privacy preserving information sharing with probable restrictions based on the rank of the security personnels. The projected function and collaboration based information sharing approach ensures protected and updated information sharing between security personnels and government intelligence departments to keep away from frightening activities. The investigational results exhibit the usefulness of the proposed information sharing approach. In a nutshell, this proposed security approach will work in together intraorganizational and inter-organizational department such as among security personnel and government intelligence department and this will make possible vertical information integration over and above it will progress interoperability approach for several recent digital government.

Keywords

Digital Government, Vertical Integration, Digital Government Interoperability, Government Intelligence Departments, Security Personnels, Information Sharing, Security, Mapping Function, Message Digest 5 (MD5), Public-Key Cryptosystem, Role, Cooperation, Rank.

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