Cryptanalysis of an ad-hoc cryptosystem for mix-based e-voting robust against relation attacks
In this paper, an ad-hoc public-key cryptosystem recently proposed to implement a general countermeasure to relation attacks in mix-based e-voting is shown to be weak in the sense that the secret key is easily obtained from public-key parameters. The required measure to fix the previous flaw is analyzed and proven to lead to an unsecure system, so that we recommend the referred cryptosystem to be discarded.
cryptanalysis e-voting relation attack public key