Applied Mathematics & Information Sciences

Author Country (or Countries)



With the rapid development of the Internet, on which many users start to take action in putting personal or corporate information and sharing them with everyone. The Internet is public as it were, if the limit of authority is not controlled to assure the security, it is possible that those attackers could illegally access to important information and destroy them. Not only is personal privacy invaded, but the mass properties are also damaged. Therefore, an effective access control system has been strongly emphasized in modern societies. To fight against these network attacks, it is necessary to establish an effective and secure access control system. Here, a scheme, a key management called Lagrange interpolation mainly takes an access control model as the framework, is proposed and Elliptic Curve Cryptography system is used for enhancing the security. The reason of choosing Lagrange interpolation is that the key used is randomized, no relationship between each key. With Elliptic Curve Cryptography system, it is expected to have attackers waste their time dealing with Elliptic Curve Discrete Logarithm Problem. Once the prime number is big enough, attackers will have trouble deciphering the key. An access control is comprehensive. For example, if the mobile agent technology is applied to an access control and key management, it would waste space and cause some flaws in the security.Moreover, there are still a lot of works to do on medical applications. Hence, these schemes are proposed for mobile agents in order to reach the improvement and then analyze the security and try to simulate what attackers will do. Four common attacks, namely External Collective Attack, Internal Attack, Collusion Attacks and Equation Breaking Attack are concluded. As results, attackers are hard to decipher the key because of no relationship between each key and will have to face Elliptic Curve Discrete Logarithm Problem. It is confirmed that the proposed schemes can be safer and more efficient in protecting mobile agents.