Fully Adaptive Decentralized Multi-Authority ABE

ePrint Report: Fully Adaptive Decentralized Multi-Authority ABE

Pratish Datta, Ilan Komargodski, Brent Waters

Decentralized multi-authority attribute-based encryption (MA-ABE) is a distributed generalization of standard (ciphertext-policy) attribute-based encryption where there is no trusted central authority: any party can become an authority and issue private keys, and there is no requirement for any global coordination other than the creation of an initial set of common reference parameters.


We present the first multi-authority attribute-based encryption schemes that are provably fully-adaptively secure. Namely, our …

authority decentralized eprint report