Public Key Based Searchable Encryption with Fine-Grained Sender Permission Control

Public key encryption with keyword searched (PEKS) is a promising cryptographic primitive that realizes keyword search in the ciphertext. Since it can provide flexible access to encrypted data, PEKS has been widely used in various fields, such as Cloud Computing and Internet of Things. Until now, many PEKS schemes with fine-grained access control have been proposed to satisfy the requirements of data sharing. However, most previous work only considered the control of data receiver and ignored the control of data sender. In practice, the malicious data sender might correctly generate ciphertexts containing useless information, which in turn increases the computational burden and communication load for the data receiver.