Invention Grant
- Patent Title: Block encryption device using auxiliary conversion
- Patent Title (中): 使用辅助转换的块加密设备
-
Application No.: US09959853Application Date: 2001-03-08
-
Publication No.: US07864950B2Publication Date: 2011-01-04
- Inventor: Mitsuru Matsui , Toshio Tokita , Junko Nakajima , Masayuki Kanda , Shiho Moriai , Kazumaro Aoki
- Applicant: Mitsuru Matsui , Toshio Tokita , Junko Nakajima , Masayuki Kanda , Shiho Moriai , Kazumaro Aoki
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: Mitsubishi Denki Kabushiki Kaisha,Nippon Telegraph and Telephone Corporation
- Current Assignee: Mitsubishi Denki Kabushiki Kaisha,Nippon Telegraph and Telephone Corporation
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2000-064614 20000309
- International Application: PCT/JP01/01796 WO 20010308
- International Announcement: WO01/67425 WO 20010913
- Main IPC: H04L9/06
- IPC: H04L9/06 ; H04L9/18
Abstract:
It is desired to share one circuit by an encryption unit 200 and a decryption unit 500. A normal data transformation unit (FL) 251 and an inverse data transformation unit (FL−1) 273 are located at point symmetry on a non-linear data transformation unit 220, and a normal data transformation unit (FL) 253 and an inverse data transformation unit (FL−1) 271 are located at point symmetry on the non-linear data transformation unit 220. Therefore, the encryption unit 200 and the decryption unit 500 can be configured using the same circuits.
Public/Granted literature
- US20020159599A1 Block encryption device using auxiliary conversion Public/Granted day:2002-10-31
Information query
