The safety refers to four layers: the physical layer, the network layer, the system layer and the application layer, which includes many contents such as network insulation, encryption, safety detection and monitoring, safety audit, virus protection, access control, identity certification, data copy and recovery, security management, etc.
1. From the E-government‘s growth environment, and the characteristic .the value orientation, research the E-government‘s security essence and the request, pointed out its security should include the government function and the system‘s own security.
In this paper, we use a direct method to solve the optimal portfolio and consumption choice problem in the security market for a specific case, in which the utility function is of a given homogenous form, i.e.
This paper analyzes the aritrage-free security markets and the general equilibrium existence problem for a stochastic economy with incomplete financial markets.
Linear provable security for a class of unbalanced feistel network
Application of this structure to block cipher designs brings out the provable security against linear attack with the upper bounds of probabilities.
Trust management was discussed according to the security requirements in distributed environment.