Issued Patents All Time
Showing 26–50 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9705858 | Information processing device and information processing method to maintain secret key for authentication | Yohei Kawamoto, Koichi Sakumoto, Yu Tanaka | 2017-07-11 |
| 9607173 | Information processing apparatus, information processing method, and recording medium | Yohei Kawamoto, Yu Tanaka, Koichi Sakumoto | 2017-03-28 |
| 9602285 | Authentication device, authentication method, and program | Koichi Sakumoto, Harunaga Hiwatari | 2017-03-21 |
| 9516007 | Verifier and prover have an authentication protocol with challenge-response with the challenge from prover having identification of the verifier | Harunaga Hiwatari, Koichi Sakumoto | 2016-12-06 |
| 9418245 | Encryption processing device, encryption processing method, and program | Kyoji Shibutani, Toru Akishita, Takanori Isobe, Harunaga Hiwatari, Atsushi Mitsuda | 2016-08-16 |
| 9363074 | Encryption processing apparatus, encryption processing method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2016-06-07 |
| 9276735 | Information processing apparatus, signature generation apparatus, information processing method, signature generation method, and program | Harunaga Hiwatari, Koichi Sakumoto | 2016-03-01 |
| 9270458 | Encryption processing device, encryption processing method, and program | Kyoji Shibutani, Atsushi Mitsuda, Toru Akishita, Takanori Isobe, Harunaga Hiwatari | 2016-02-23 |
| 9240885 | Cryptographic processing apparatus, cryptographic processing method, and computer program therefor | Bart Preneel | 2016-01-19 |
| 9129122 | Signature verification apparatus, signature verification method, program, and recording medium | Koichi Sakumoto, Harunaga Hiwatari | 2015-09-08 |
| 9123194 | Print medium, card creation method, and program | Koichi Sakumoto, Harunaga Hiwatari | 2015-09-01 |
| 9083507 | Data processing device, data processing method, and program | Kyoji Shibutani, Toru Akishita, Takanori Isobe, Harunaga Hiwatari, Atsushi Mitsuda | 2015-07-14 |
| 9083506 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani | 2015-07-14 |
| 9076000 | Authentication device, authentication method, and program | Koichi Sakumoto, Harunaga Hiwatari | 2015-07-07 |
| 8983062 | Encryption processing device, encryption processing method, and programme | Kyoji Shibutani, Toru Akishita, Takanori Isobe, Harunaga Hiwatari, Atsushi Mitsuda | 2015-03-17 |
| 8959355 | Authentication device, authentication method, program, and signature generation device | Koichi Sakumoto, Harunaga Hiwatari | 2015-02-17 |
| 8843457 | Data conversion device, data conversion method, and program | Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata | 2014-09-23 |
| 8824671 | Data converter, data conversion method, and computer program | Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata | 2014-09-02 |
| 8826025 | Authentication device, authentication method, program, and signature generation device | Koichi Sakumoto, Harunaga Hiwatari | 2014-09-02 |
| 8787563 | Data converter, data conversion method and program | Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata | 2014-07-22 |
| 8787568 | Data transformation apparatus, data transformation method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2014-07-22 |
| 8767956 | Cryptographic processing apparatus, cryptographic processing method, and computer program therefor | Bart Preneel | 2014-07-01 |
| 8737603 | Cryptographic processing apparatus, cryptographic processing method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2014-05-27 |
| 8731188 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2014-05-20 |
| 8675867 | Key generation algorithm using secret polynomial over finite ring and transformation | Koichi Sakumoto, Harunaga Hiwatari | 2014-03-18 |