@misc{cryptoeprint:2013:665,
    author = {Henry Cohn and Shafi Goldwasser and Yael Tauman Kalai},
    title = {The Impossibility of Obfuscation with a Universal Simulator},
    howpublished = {Cryptology ePrint Archive, Report 2013/665},
    year = {2013},
    url = {https://eprint.iacr.org/2013/665},
}