Vipul Goyal Yuval Ishai Mohammad Mahmoody Amit Sahai Interactive Locking, Zero-Knowledge PCPs, and Unconditional Cryptography. 89 2010 2010 IACR Cryptology ePrint Archive http://eprint.iacr.org/2010/089 db/journals/iacr/iacr2010.html#GoyalIMS10