@misc{cryptoeprint:2015:140,
    author = {Neal Koblitz and Alfred Menezes},
    title = {The Random Oracle Model: A Twenty-Year Retrospective},
    howpublished = {Cryptology ePrint Archive, Report 2015/140},
    year = {2015},
    url = {https://eprint.iacr.org/2015/140},
}