US 2007/0185761 A1 · Anonymous electronic voting system and anonymous electronic voting method

Abstract

A voting server transmits a list of plaintext and encrypted voting data obtained by encrypting the plaintext to a voter terminal, and the voter terminal a selected encrypted candidate name corresponding to the plaintext elected by the voter to an encryption server. The encryption server returns encrypted voting data obtained by re-encrypting the encrypted candidate name to the voter terminal, and the voter terminal transmits the encrypted voting data received from the encryption server for voting. Decryption of the encrypted voting data is performed by an anonymous decryption system. The voter terminal certifies the voter to an authentication server, and affixes a digital signature to the encrypted voting data based on a common-key authentication base, transmitting the same to the voting server.

Claims24

Dependent claims

An anonymous electronic voting system comprising:

voter terminals for receiving a list of combinations of candidate name and encrypted candidate name, to transmit said encrypted candidate name of a selected candidate via a network;
at least one encryption server for receiving and re-encrypting said encrypted candidate name to create encrypted voting data, and returning said encrypted voting data to said voter terminal having transmitted said encrypted candidate name;
a voting server for receiving said encrypted voting data from said voter terminal to create a list of effective encrypted voting data from among said received encrypted voting data, and transmitting said created list of said effective encrypted voting data via said network;
and
a decryption server for decrypting said list of said effective encrypted voting data received from said voting server, to create and transmit via said network a list of plaintext candidate names rearranged from said list of said effective encrypted voting data,
wherein said voting server receives said list of said plaintext candidate names from said decryption server, to tally vote results based on said list of said received candidate names.

3 more elements

An anonymous electronic voting system comprising:

voter terminals connected to a network;
a first encryption server including a first data conversion means for creating a first encryption parameter for each of said voter terminals from public information, and transmitting said first parameter to said voter terminals;
a second encryption server including a second data conversion means for creating a second encryption parameter, and transmitting said second parameter to said voter terminals;
a voting server for receiving encrypted voting data from said voter terminals to create a list of effective encrypted voting data from among said received encrypted voting data, and transmitting said created list of said effective encrypted voting data via said network;
and
a decryption server for decrypting said list of said effective encrypted voting data received from said voting server, to create and transmit via said network a list of plaintext candidate names rearranged from said list of said effective encrypted voting data, wherein:
names from said decryption server, to tally voted results based on said list of said received candidate names;
and
said voter terminals each include an encryption means for encrypting voting contents based on said first and second encryption parameters to create encrypted voting data, and transmits said encrypted voting data to said voting server.

6 more elements

An anonymous electronic voting method using a voting server, a voter terminal for voting therethrough by a voter, an encryption server, and a decryption server, said comprising the steps of:

transmitting from said voting server a list of combinations of candidate name and encrypted candidate name obtained by encrypting said candidate name to said voter terminal via a network;
transmitting from said voter terminal an encrypted candidate name, which is paired with a candidate name selected by a voter, to said encryption server;
re-encrypting said encrypted candidate name in said encryption server to create encrypted voting data, and transmitting said encrypted voting data to said voter terminal having transmitted said encrypted candidate name;
transmitting from said voter terminal said encrypted voting data, which is received from said encryption server, to said voting server;
receiving said encrypted voting data in said voting server to create and transmit a list of effective encrypted voting data;
decrypting said list of said encrypted voting data in said decryption server to create a list of plaintext candidate names rearranged;
and
receiving said list of said plaintext candidate names in said voting server to tally vote results based on said list of said received candidate names.

5 more elements

An anonymous electronic voting method comprising the steps of:

creating in a first encryption server a first encryption parameter for each of voter terminals from public information, and transmitting said first parameter to said voter terminals;
creating in a second encryption server a second encryption parameter for each of said voter terminals from said public information, and transmitting said second parameter to said voter terminals;
encrypting voting contents of a voter in said voter terminal based on said first and second encryption parameters to create encrypted voting data, and transmitting said encrypted voting data to said voting server;
creating a list of effective encrypted voting data from among said received encrypted voting data in said voting server and transmitting said created list of said effective encrypted voting data via said network;
decrypting in a decryption server said list of said effective encrypted voting data received from said voting server, to create and transmit via said network a list of plaintext candidate names rearranged from said list of said effective encrypted voting data;
and
receiving in said voting server said plaintext candidate names, to tally voted results based on said list of said received candidate names.

4 more elements

Dependencies are inferred from the claim text.

Anonymous electronic voting system and anonymous electronic voting method

Life of this patent

Anonymous electronic voting system and anonymous electronic voting method

Life of this patent

Abstract

Claims24