@misc{cryptoeprint:2016:262,
    author = {Riccardo Longo and Chiara Marcolla and Massimiliano Sala},
    title = {Collaborative Multi-Authority KP-ABE for Shorter Keys and Parameters},
    howpublished = {Cryptology ePrint Archive, Report 2016/262},
    year = {2016},
    url = {https://eprint.iacr.org/2016/262},
}