Bug in MAC check for SPDZ-based protocols

Aberta

#324 aberta em 10/12/2018 1 comentário 0 reações 0 responsáveis Ver no GitHub

Security Type: Bug

Descrição

SPDZ, Mascot, and SPDZ2k require coin tossing to run every time a MAC check is executed.

Currently, we only run coin tossing once and re-use the resulting DRBG for all MAC checks. This is not secure and should be fixed for:

- [x] SPDZ
- [ ] Mascot
- [ ] SPDZ2k

Esta issue ainda não foi avaliada.