Security integration in inter-enterprise business process engineering

New organisational trends as alliances, virtual enterprises or extended enterprises make an heavy use of the information and communication technologies. This involves both the integration of the enterprises "personal" information systems, which exhibits important security requirements, and the definition of dedicated inter-enterprises business processes, respecting each enterprise autonomy and bringing an efficient collaborative framework. Based on actors models, our approach to couple closely a multi-levels workflow description of the distributed business processes and access controls descriptions on the information system so that a global and consistent security policy can be set.