Privacy-Preserving Traceable Functional Encryption for Inner Product

arXiv:2404.04861v1 Announce Type: new
Abstract: Functional encryption introduces a new paradigm of public key encryption that decryption only reveals the function value of encrypted data. To curb key leakage issues and trace users in FE-IP, a new primitive called traceable functional encryption for inner product (TFE-IP) has been proposed. However, the privacy protection of user's identities has not been considered in the existing TFE-IP schemes. In order to balance privacy and accountability, we propose the concept of privacy-preserving traceable functional …

arxiv called cs.cr data decryption encrypted encrypted data encryption function key paradigm privacy product protection public public key public key encryption trace traceable value