Novel Searchable Attribute-Based Encryption for the Internet of Things

As the product of third information technology revolution, Internet Things (IoT) has greatly altered our way lifetime. Cloud storage gradually become best choice for data processing due to its scalability and flexibility. However, cloud is not a completely trusted entity, such as tampering with user or leaking personal privacy. Therefore, usually adopts attribute-based encryption schemes accomplish confidentiality fine-grained access control. applying ABE scheme still faces many challenges, dynamic revocation, sharing, excessive computational burden. In this paper, we propose novel searchable attribute system that replaces traditional key generation center consortium blockchain generate manage partial keys. addition, can perform predecryption operations in cloud, users only need spend small amount cost achieve decryption operations. Security analysis proves achieves security under both chosen keyword attack plaintext attack. Compared other schemes, more economical terms computing storage.