@misc{cryptoeprint:2013:754,
    author = {Omkant Pandey and Manoj Prabhakaran and Amit Sahai},
    title = {Obfuscation-based Non-black-box Simulation and Four Message Concurrent Zero Knowledge for NP},
    howpublished = {Cryptology ePrint Archive, Report 2013/754},
    year = {2013},
    url = {https://eprint.iacr.org/2013/754},
}