Authors:

Ben Smyth & David Bernhard

Title:

Ballot secrecy and ballot independence coincide

Abstract:

In this five minute talk, I will summarise our study of ballot
independence for election schemes which is due to appear at
ESORICS'13. First, I will motivate the need for ballot independence by
revisiting the work of Cortier & Smyth (CSF'11), which demonstrates a
flaw in the Helios electronic voting scheme. Secondly, I will consider
the desirability of ballot independence with respect to recent debate.
Finally, I will show that ballot independence is necessary for ballot
secrecy and, moreover, ballot independence is sufficient for ballot
secrecy under practical assumptions.