Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10355856 | Key exchange method, key exchange system, key distribution device, communication device, and program | Reo Yoshida, Hitoshi Fuji, Tomohide Yamamoto, Yuto KAWAHARA, Kazuki Yoneyama | 2019-07-16 |
| 10275960 | Security system, management apparatus, permission apparatus, terminal apparatus, security method and program | Hitoshi Fuji, Tomohide Yamamoto, Reo Yoshida | 2019-04-30 |
| 10163370 | Decoding apparatus, decoding capability providing apparatus, method thereof and program | Reo Yoshida, Go Yamamoto | 2018-12-25 |
| 10033711 | Directory service device, client device, key cloud system, method thereof, and program | Tomohide Yamamoto, Go Yamamoto | 2018-07-24 |
| 9960906 | Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium | Go Yamamoto | 2018-05-01 |
| 9894056 | Segmented secret-key storage system, segment storage apparatus, segmented secret-key storage method | Go Yamamoto, Reo Yoshida | 2018-02-13 |
| 9842086 | Calculation device, calculation method, and program | Go Yamamoto | 2017-12-12 |
| 9794060 | Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium | Go Yamamoto | 2017-10-17 |
| 9735963 | Decryption service providing device, processing device, safety evaluation device, program, and recording medium | Go Yamamoto, Hitoshi Fuji, Tomohide Yamamoto, Reo Yoshida | 2017-08-15 |
| 9607158 | Proxy computing system, computing apparatus, capability providing apparatus, proxy computing method, capability providing method, program, and recording medium | Go Yamamoto | 2017-03-28 |
| 9542155 | Proxy calculation system, method, request device and program thereof | Go Yamamoto | 2017-01-10 |
| 9037623 | Proxy calculation system, proxy calculation method, proxy calculation requesting apparatus, and proxy calculation program and recording medium therefor | Go Yamamoto | 2015-05-19 |
| 8995660 | Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium | Kaku Takeuchi, Sakae Chikara | 2015-03-31 |
| 8964982 | Cryptographic system, cryptographic communication method, encryption apparatus, key generation apparatus, decryption apparatus, content server, program, and storage medium | Kaku Takeuchi, Sakae Chikara | 2015-02-24 |
| 8938068 | Functional encryption applied system, information output apparatus, information processing apparatus, encryption protocol execution method, information output method, information processing method, program and recording medium | Koutarou Suzuki | 2015-01-20 |
| 8488780 | Finite field calculation apparatus, finite field calculation method and recording medium | Gen Takahashi, Kaku Takeuchi | 2013-07-16 |
| 7831651 | Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method | Hikaru Morita | 2010-11-09 |
| 6795553 | Method and apparatus for modular inversion for information security and recording medium with a program for implementing the method | Hikaru Morita | 2004-09-21 |
| 6430588 | Apparatus and method for elliptic-curve multiplication and recording medium having recorded thereon a program for implementing the method | Hikaru Morita, Kunio Kobayashi, Fumitaka Hoshino | 2002-08-06 |