Issued Patents All Time
Showing 51–75 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8666069 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani | 2014-03-04 |
| 8577023 | Encryption processing method, apparatus, and computer program utilizing different types of S-boxes | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2013-11-05 |
| 8538887 | Content delivery system and content delivery method | Kenji Yoshino, Yoshihito Ishibashi, Toru Akishita, Makoto Oka, Masaharu Yoshimori | 2013-09-17 |
| 8522033 | Authentication device, authentication method, program, and signature generation device | Koichi Sakumoto, Harunaga Hiwatari | 2013-08-27 |
| 8433912 | Authentication device, authentication method, program, and signature generation device | Koichi Sakumoto, Harunaga Hiwatari | 2013-04-30 |
| 8396210 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2013-03-12 |
| 8380683 | Data conversion device, data conversion method, and program | Kyoji Shibutani, Shiho Moriai, Toru Akishita, Tetsu Iwata | 2013-02-19 |
| 8375206 | Authentication and encryption utilizing command identifiers | Tomoyuki Asano, Yoshihito Ishibashi, Toru Akishita, Masaharu Yoshimori, Makoto Tanaka | 2013-02-12 |
| 8369522 | Encryption processing apparatus, encryption method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2013-02-05 |
| 8340282 | Information processing apparatus | — | 2012-12-25 |
| 8306217 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani | 2012-11-06 |
| 8295478 | Cryptographic processing apparatus, algorithm constructing method, processing method, and computer program applying an extended feistel structure | Kyoji Shibutani | 2012-10-23 |
| 8290148 | Encryption processing apparatus, encryption processing method, and computer program | Toru Akishita, Kyoji Shibutani, Shiho Moriai | 2012-10-16 |
| 8275127 | Cryptographic processing apparatus, cryptographic processing method, and computer program therefor | Bart Preneel | 2012-09-25 |
| 8165288 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani, Toru Akishita, Shiho Moriai | 2012-04-24 |
| 8073140 | Encryption/decryption device, encryption/decryption method, and computer program | Kyoji Shibutani | 2011-12-06 |
| 8031866 | Cryptographic processing apparatus and cryptographic processing method, and computer program | Kyoji Shibutani | 2011-10-04 |
| 7996335 | Information processing device, contents distribution server, license server, and method and computer program | Masafumi Kusakawa | 2011-08-09 |
| 7925017 | Information recording device, information playback device, information recording medium, information recording method, information playback method, and program providing medium | Yoshihito Ishibashi, Kenji Yoshino, Toru Akishita, Takeshi Ito, Shigekazu Hayashi | 2011-04-12 |
| 7797532 | Device authentication system | Takayuki Miura, Jouji Abe, Masafumi Kusakawa | 2010-09-14 |
| 7747011 | Encryption device, encryption method, and computer program | Preneel Bart | 2010-06-29 |
| 7669052 | Authentication and encryption utilizing command identifiers | Tomoyuki Asano, Yoshihito Ishibashi, Toru Akishita, Masaharu Yoshimori, Makoto Tanaka | 2010-02-23 |
| 7433470 | Cryptographic processing apparatus, cryptographic processing method, and computer program | Kyoji Shibutani | 2008-10-07 |
| 7373506 | Data authentication system | Tomoyuki Asano, Yoshihito Ishibashi, Toru Akishita | 2008-05-13 |
| 7243228 | Data storage with CBC-mode encryption processing | Yoshihito Ishibashi, Kenji Yoshino, Toru Akishita | 2007-07-10 |