Time+Place: | Sunday 20/07/2014 11:30 Room 337-8 Taub Bld. |

Title: | Succinct Non-Interactive Zero Knowledge for a von Neumann Architecture |

Speaker: | Madars Virza - CSpecial Lecture - Note unusual time http://www.csail.mit.edu/user/2615 |

Affiliation: | MIT |

Host: | Eli Ben-Sasson |

We build a system that provides succinct non-interactive zero-knowledge proofs (zk-SNARKs) for program executions on a von Neumann RISC architecture. The system has two components: a cryptographic proof system for verifying satisfiability of arithmetic circuits, and a circuit generator to translate program executions to such circuits. Our design of both components improves in functionality and efficiency over prior work: (1) Our circuit generator is the first to be universal: it does not need to know the program, but only a bound on its running time; moreover, the size of the output circuit depends additively (rather than multiplicatively) on program size, allowing verification of larger programs. (2) The cryptographic proof system improves proving and verification times, by leveraging new algorithms and a pairing library tailored to the protocol. Joint work with Eli Ben-Sasson, Alessandro Chiesa, and Eran Tromer.