AB-IPFE gets a two-level hierarchy, plus pairing-based adaptive-secure constructions for expressive access control.
trending2
01 02 DASTE: Decentralized Ad-Hoc Access-Structured Threshold Encryption with Dynamic Policy Evolution eprint.iacr.orgThreshold encryption for ledgers, with policy evolution, subtree revocation, and an RLWE variant for the post-quantum crowd.