Study on Crowdsourced Testing Intellectual Property Protection Technology Based on Blockchain and Improved CP-ABE

Crowdsourced testing is the application of crowdsourcing in software testing.It performs testing in a distributed and collaborative way, which has received widespread attention.However, the open crowdsourced testing environment and centralized storage mode put the intellectual property at risk of leakage and being manipulated.In order to realize the privacy protection and trusted storage of crowdsourced testing intellectual property, this paper proposes corresponding protection methods for different intellectual property.For the test tasks and the tested codes, AES and the improved CP-ABE algorithm are used for fine-grained data access control.By outsourcing complex encryption operations to the trusted third party, the proposed algorithm reduces the computing cost of requester.Meanwhile, it also supports the dynamic attribute revocation and meets the forward and backward security.In addition, using blockchain and InterPlanetary File System（IPFS）,a distributed trusted storage and consistency right confirmation