Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7359515 | Method and apparatus for symmetric-key decryption | Soichi Furuya, Kazuo Takaragi, Masashi Takahashi, Kunihiko Miyazaki, Hisayoshi Sato +1 more | 2008-04-15 |
| 7200232 | Method and apparatus for symmetric-key decryption | Soichi Furuya, Kazuo Takaragi, Masashi Takahashi, Kunihiko Miyazaki, Hisayoshi Sato +1 more | 2007-04-03 |
| 7110545 | Method and apparatus for symmetric-key encryption | Soichi Furuya, Kazuo Takaragi, Masashi Takahashi, Kunihiko Miyazaki, Hisayoshi Sato +1 more | 2006-09-19 |
| 6876745 | Method and apparatus for elliptic curve cryptography and recording medium therefore | — | 2005-04-05 |
| 6480606 | Elliptic curve encryption method and system | — | 2002-11-12 |
| 6370247 | Hash value generating method and device, data encryption method and device, data decryption method and device | Kazuo Takaragi | 2002-04-09 |
| 6341349 | Digital signature generating/verifying method and system using public key encryption | Kazuo Takaragi | 2002-01-22 |
| 6236729 | Key recovery method and system | Kazuo Takaragi | 2001-05-22 |
| 6141421 | Method and apparatus for generating hash value | Kazuo Takaragi | 2000-10-31 |
| 6122375 | Hash value generating method and device, data encryption method and device, data decryption method and device | Kazuo Takaragi | 2000-09-19 |