Secure multiparty AES. (Short paper). (English) Zbl 1309.94140
Sion, Radu (ed.), Financial cryptography and data security. 14th international conference, FC 2010, Tenerife, Canary Islands, January 25–28, 2010. Revised selected papers. Berlin: Springer (ISBN 978-3-642-14576-6/pbk). Lecture Notes in Computer Science 6052, 367-374 (2010).
Summary: We propose several variants of a secure multiparty computation protocol for AES encryption. The best variant requires \(2200 + {{400}\over{255}}\) expected elementary operations in expected \(70 + {{20}\over{255}}\) rounds to encrypt one 128-bit block with a 128-bit key. We implemented the variants using VIFF, a software framework for implementing secure multiparty computation (MPC). Tests with three players (passive security against at most one corrupted player) in a local network showed that one block can be encrypted in 2 seconds. We also argue that this result could be improved by an optimized implementation.
For the entire collection see [Zbl 1193.94006].
For the entire collection see [Zbl 1193.94006].
