Conference Proceedings

Universally Verifiable MPC and IRV Ballot Counting

K Ramchen, C Culnane, O Pereira, V Teague

Proceedings of the Financial Cryptography and Data Security: 23rd International Conference, FC 2019 | Springer | Published : 2019


We present a very simple universally verifiable MPC protocol. The first component is a threshold somewhat homomorphic cryptosystem that permits an arbitrary number of additions (in the source group), followed by a single multiplication, followed by an arbitrary number of additions in the target group. The second component is a black-box construction of universally verifiable distributed encryption switching between any public key encryption schemes supporting shared setup and key generation phases, as long as the schemes satisfy some natural additive-homomorphic properties. This allows us to switch back from the target group to the source group, and hence perform an arbitrary number of multi..

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Awarded by Walloon Region through the FEDER project USERMedia

Funding Acknowledgements

Olivier Pereira is grateful to the Belgian Fund for Scientific Research (F.R.S.-FNRS) for its financial support provided through the SeVoTe project, to the European Union (EU) and the Walloon Region through the FEDER project USERMedia (convention number 501907-379156), and to the Melbourne School of Engineering for its fellowship.