Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7864950 | Block encryption device using auxiliary conversion | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai | 2011-01-04 |
| 7822196 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai | 2010-10-26 |
| 7760870 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai | 2010-07-20 |
| 7760871 | Block cipher using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai | 2010-07-20 |
| 7697684 | Block cipher apparatus using auxiliary transformation | Mitsuru Matsui, Toshio Tokita, Junko Nakajima, Masayuki Kanda, Shiho Moriai | 2010-04-13 |
| 7187769 | Method and apparatus for evaluating the strength of an encryption | Shiho Moriai, Masayuki Kanda, Youichi Takashima, Kazuo Ohta | 2007-03-06 |
| 6859818 | Method and apparatus for permuting input data and recording medium having stored thereon a program for executing permutation | Hiroki Ueda, Masayuki Kanda | 2005-02-22 |
| 6850960 | Inverse calculation apparatus and recording medium having stored thereon a program for executing inverse calculation | Hiroki Ueda, Masayuki Kanda | 2005-02-01 |
| 6769063 | Data converter and recording medium on which program for executing data conversion is recorded | Masayuki Kanda, Youichi Takashima, Hiroki Ueda, Kazuo Ohta, Tsutomu Matsumoto | 2004-07-27 |
| 6578061 | Method and apparatus for data permutation/division and recording medium with data permutation/division program recorded thereon | Hiroki Ueda, Masayuki Kanda | 2003-06-10 |
| 6038581 | Scheme for arithmetic operations in finite field and group operations over elliptic curves realizing improved computational speed | Kazuo Ohta | 2000-03-14 |