@misc{cryptoeprint:2015:213,
    author = {Javier Herranz},
    title = {Attribute-Based Versions of Schnorr and ElGamal},
    howpublished = {Cryptology ePrint Archive, Report 2015/213},
    year = {2015},
    url = {https://eprint.iacr.org/2015/213},
}