A key management scheme for multilevel security in distributed applications is presented.The scheme adopts BELL-LaPadula model as multilevel access control policies.We use Chinese Remainder Theorem
introduce the notions of first-secret-key-element
second-secret-key-element and writing-element
and construct sharing information of session key.The scheme is efficient
secure and dynamic.At the same time
there are many practical applications involving the scheme for key management such as meeting in the network and talking in the network etc.