Abstract: In order to avoid the leakage of scientific and technological achievements data, a cross platform access control method based on Portal authentication technology is designed. Portal authentication technology is used to construct the access control model of request access platform and scientific and technological achievements data service platform. When these two platforms pass the visitor identity authentication, the trust degree evaluation and access request authorization are carried out. The service provider platform uses the policy enforcement point (PEP) to complete the collection of user attribute information of the access request and transmit it to the PEP, and uses the recommendation operator to calculate the existing access ask the user’s trust degree, and obtain the user’s trust in the scientific and technological achievements data service platform through the integration operation. The obtained trust degree is transmitted to the policy decision point (PDP). The trust degree is analyzed by the PDP to determine whether the access request is authorized or not, so as to realize the cross platform access control of scientific and technological achievements data. The experimental results show that the method has high efficiency and accuracy, short platform response time and good practicability.

Key words: Portal authentication technology, scientific and technological achievements, cross platform, access control model, identity authentication, trust