SACS-ABE&B: Supervised Access Control Scheme Based on Attribute-Based Encryption and Blockchain

Aiming at the problem of illegal data sharing malicious users in access control scheme based on attribute-based encryption, an that can restrict sending ability owners is proposed. By adding a sanitizer to sanitize ciphertext, it ensure parties who do not adhere system policy cannot share information effectively. The constructed blockchain, and traceability process be realized. Off-chain storage also lower blockchain load. meets No-Read No-Write rules, achieves chosen-plaintext attack security under random oracle model, against quantum attacks. As result theoretical analysis experimental simulation, has certain feasibility practical significance.