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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Secure Multiparty AES
(Short Paper)
verfasst von : Ivan Damgård, Marcel Keller
Erschienen in: Financial Cryptography and Data Security
Verlag: Springer Berlin Heidelberg
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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.