In order to increase the creability of the damage degree evaluation of cascading failure caused by emergency to carbon emission correlation system, considering the redundancy ability of individual members to load, an overload failure probability was proposed based on "load-capacity" cascade failure model of traditional complex network, and a cascading failure model was constructed considering load overload. Then, based on the characteristics of nodes, six load allocation strategies for overloaded nodes were raised. The simulation results show that, in the load allocation strategies of the overloaded nodes, the integrated allocation strategy is superior in general, which can effectively control the scale of cascading failure and increase the robustness of network; increasing the overloaded parameters in a certain range can help to reduce the impact of cascading failure, while the improvement effect is not significant when the parameters are too large; under different load allocation strategies, the residual coefficient has an optimal value and capacity adjustable parameters have optimal ranges which can keep the carbon emission correlation network in good robustness with low construction cost while the tight allocation strategy means high costruction cost.

Satellite network has unique characteristics that differ from traditional networks, such as channel openness, node exposure and limited onboard processing capability. However, existing Ciphertext-Policy Attribute-Based Encryption (CP-ABE) access control is not suitable for the satellite network due to its policy explosion and attribute-based authorization manner. To address this problem, a multi-authority access control scheme with policy hiding of satellite network was proposed. Linear Secret Sharing Scheme (LSSS) matrix access structure was adopted to guarantee data confidentiality and hide the access control policy completely by obfuscating the access structure. In addition, multi-authority was used to achieve fine-grained attribute management, eliminating the performance bottleneck of central authority. Each attribute authority worked independently and generated partial key of the user, which makes it resistant to collusion attacks. The security and performance analysis show that the proposed scheme can satisfy the security requirements of data confidentiality, collusion attack resistance and complete policy hiding, and is more suitable for satellite network than the comparison solutions.