Anonymity & Cryptology

Classical and Quantum Voting

Blind signature schemes, also introduced by David Chaum, have been developed with applications in anonymity, election and payment schemes. The basic concept involves obtaining a signature to authenticate a ciphertext, for example an encrypted vote, without the signer being able to observe the plaintext vote itself. Verification regarding the signature is supported by such schemes whilst maintaining privacy regarding the actual plaintext. The signer is thus denied the ability to link a particular plaintext with its corresponding blind signature. Variations upon such schemes are to be found with for example Fair Blind Signatures in which the possibility of, for example, blackmail is discussed.

Quantum Voting

Various anonymity schemes within a quantum setting are considered.

Recent Publications

J. A.VACCARO, J. SPRING AND A. CHEFLES, Quantum Protocols for Anonymous Voting and Surveying, Phys Rev A, 75, 1 (2007).

J. A.VACCARO, J. SPRING AND A. CHEFLES, Quantum Protocols for Anonymous Voting and Surveying, quant-ph/0504161.

Note: The first publication on quantum voting.