| Title |
A Fast and Verified Software Stack for Secure Function Evaluation |
| ID_Doc |
79251 |
| Authors |
Almeida, JB; Barbosa, M; Barthe, G; Dupressoir, F; Grégoire, B; Laporte, V; Pereira, V |
| Title |
A Fast and Verified Software Stack for Secure Function Evaluation |
| Year |
2017 |
| Published |
|
| Abstract |
We present a high-assurance software stack for secure function evaluation (SFE). Our stack consists of three components: i.a verified compiler (CircGen) that translates C programs into Boolean circuits; ii. a verified implementation of Yao's SFE protocol based on garbled circuits and oblivious transfer; and iii. transparent application integration and communications via FRESCO, an open-source framework for secure multiparty computation (MPC). CircGen is a general purpose tool that builds on CompCert, a verified optimizing compiler for C. It can be used in arbitrary Boolean circuit-based cryptography deployments. The security of our SFE protocol implementation is formally verified using EasyCrypt, a tool-assisted framework for building high-confidence cryptographic proofs, and it leverages a new formalization of garbled circuits based on the framework of Bellare, Hoang, and Rogaway (CCS 2012). We conduct a practical evaluation of our approach, and conclude that it is competitive with state-of-the-art (unverified) approaches. Our work provides concrete evidence of the feasibility of building efficient, verified, implementations of higher-level cryptographic systems. All our development is publicly available. |
| PDF |
https://repositorium.sdum.uminho.pt/bitstream/1822/50515/1/17CCSa.pdf
|
