发明名称 |
BLOCK ENCRYPTION DEVICE USING AUXILIARY CONVERSION |
摘要 |
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. <IMAGE> |
申请公布号 |
EP1193665(A4) |
申请公布日期 |
2006.06.14 |
申请号 |
EP20010912172 |
申请日期 |
2001.03.08 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA;NIPPON TELEGRAPH & TELEPHONE CO. LTD. |
发明人 |
MATSUI, MITSURU;TOKITA, TOSHIO;NAKAJIMA, JUNKO;KANDA, M.;MORIAI, S.;AOKI, K. |
分类号 |
G09C1/00;H04L9/06;H04L9/28;(IPC1-7):H04L9/06 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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