A conspiracy attack resistant trust model for agile manufacturing enterprises

As the main enterprise cooperation form in the 21st century, agile manufacturing (AM) has many different characteristics from the traditional ones. How to realize partners' authenticated interaction is the basis for AM's safely operation. In this paper, a conspiracy attack resistant trust model for AM was proposed based on the virtual certificate authority (VCA), which was realized using the threshold DSA signature scheme. By introducing signers' original secret keys into the partial signatures, conspiracy attacks can be effectively resisted in this model. Analysis shows that the proposed model can provide a flexible distributed trust policy for AM under various and dynamic organization structures, and has the advantages of agility, dynamics, low-cost and high security.