通訊安全在國防上特別重要，倘若儲存在電腦或在網路傳播之機密因安全措施之不 足或不當，而導致曝光或者系統遭人入侵，造成的危害可能不只是一個軍事單位，而是 整體的國家安全。因此，如何確保各軍事單位電腦網路的安全，避免遭受攻擊與破壞， 乃是當前最優先且須立即努力完成的重要工作。 本研究在我國公開公開金鑰基礎建設下，配合國軍之網路環境，設計一適合之認證 中心，以利將來提供必要的資訊安全服務，保護其通訊的安全。所設計之系統包括認證 中心建置、金鑰和憑證產生、秘密金鑰加解密模組、數位簽章模組、目錄伺服器查詢、 新增、更改與刪除等應用軟體。本研究期望能使能透過應用程式介面，支援各系統所需 的安全模組與安全協定，能為我國國防之網路安全做出貢獻。

Communication security is particularly important for national defense. If the secret which is stored in the computer or in a network is spread due to the improper or lack of security measures, and cause the system to be exposure or invaded, the harm may not be only inside the military unit, but also the overall national security. Therefore, how to ensure the security of the computer network of the various military units and to avoid the attack and destruction is currently the most important work that should be done with the highest priority and immediate efforts. This study is designed an appropriate certification authority under the public key infrastructure and with the army network environment, and to provide the necessary information security services, and also to protect the security of their communications. The design of the system includes the construction of certification authority, generations of keys and certificates, encryption and decryption modules of secret keys, digital signature module, directory server query, also add, change and delete the applications software. This study attempts to contribute to the national defense through network security, and the application interface to support the security module and security agreements that the system required.