@misc{cryptoeprint:2017:123,
    author = {Rishab Goyal and Venkata Koppula and Brent Waters},
    title = {Separating IND-CPA and Circular Security for Unbounded Length Key Cycles},
    howpublished = {Cryptology ePrint Archive, Report 2017/123},
    year = {2017},
    url = {https://eprint.iacr.org/2017/123},
}