Nippon Telegraph and Telephone Corporation

Shigeru Kayaguchi

Dai Ikarashi

Koji Chida

Hitoshi Fuji

Naoto Kiribuchi

Hiroyoshi Takiguchi

Gembu Morohashi

Teruko Miyata

Data processing is performed while personal information is kept concealed. A registrant terminal splits a registration input password and allocates the split pieces to secure computation servers. The secure computation servers verify whether the password matches. The registrant terminal splits target data and allocates the data shared values to the secure computation servers. The secure computation servers store the data shared values. A user terminal splits a utilization input password and allocates the split pieces to the secure computation servers. The secure computation servers verify whether the password matches. The user terminal sends a data processing request to the secure computation servers. The secure computation servers execute secure computation of the data shared values to generate processing result shared values. The user terminal recovers the processing result from the processing result shared values.

Secure computation method, secure computation system, secure computation server, registrant terminal, user terminal and program

Growing community of inventors

Musashino, Japan

Shigeru Kayaguchi