Research and design of security in Multi-agent System

In this paper, security threats existing in Multi-agent System (MAS) are analyzed in detail, and security architecture of single agent is proposed aiming at these security problems. Meanwhile the secure framework of MAS based on simplified PKI is designed. In addition, the security mechanisms of MAS are discussed, such as logon and logoff, access control, secure communication between agents and security recovery. The architecture and relevant security management mechanisms can guarantee the verification and non-repudiation of activities of agents.