Research On Key Management Algorithm Based On Secure Collaborative Computing

Collaborative computing is the majority of users group computing model,with a large number of users,sharing resources and dynamic characteristics.However,the security problems hinder the development of collaborativecomputing.Because of the special operation environment of cooperative computing,the authentication between users and the authentication between user and resource are very complicated.In addition,the confidentiality and integrity of the data are required for the communication between users,so the traditional security mechanism is no longer applicable.Therefore,in order to improve the satisfaction of users,it is needed to study the security key management algorithm in cooperative computing environment.This paper mainly researches the collaborative calculation in the process of security key management algorithm,and it exploresthe two aspectsof the user communication security encryption algorithm and the different levels in sharing resources and the key management algorithm.Security group communication(SGC)is a group member can communicate with each other,while the group members can't know the true content of the information.In order to adapt to the dynamics of the large scale user's group communication,a more suitable group key management algorithm is needed.At the same time,this paper mainly analyzes the key management protocol security from confidentiality,before safety,safetyandanti-collusion attack on group,and on the level of access security architecture is discussed in this paper,developing a set of complete collaborative computing key management system.A novel design approach of level key tree based on dynamic programming is proposed in this paper.In this paper,to secure group communication and access control as the goal,in the collaborative computing and multi-level secret key management architecture,key management algorithm(SPECC)based on elliptic curve cryptography symmetric polynomial is proposed.This algorithm takes the flexibility of the symmetry polynomial,and uses different key algorithms for different levels.The ancestral hierarchy uses the elliptic curve to generate the key,and then uses the symmetric polynomial to carry out the key derivation.Experimental results show that the SPECC algorithm has good security,and it takes less memory,less computation complexity and less complexity,and it is more suitable for dynamic environment of cooperative computing.