Function cryptoballot::encrypted_vote_from_upstream_tx

pub fn encrypted_vote_from_upstream_tx<S: Store>(
    store: &S, 
    upstream_id: Identifier, 
    upstream_index: u16, 
    contest_index: u32, 
    mix_config: &Option<MixConfig>
) -> Result<Ciphertext, ValidationError>

A convenience function for getting an encrypted-vote from some upstream transaction ID. The upstream transaction should either be a mixnet or a vote transaction.