发明名称 |
Block cipher apparatus using auxiliary transformation |
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.
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申请公布号 |
US7697684(B2) |
申请公布日期 |
2010.04.13 |
申请号 |
US20050260111 |
申请日期 |
2005.10.28 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA;NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
MATSUI MITSURU;TOKITA TOSHIO;NAKAJIMA JUNKO;KANDA MASAYUKI;MORIAI SHIHO;AOKI KAZUMARO |
分类号 |
H04K1/04;G06F11/30;G09C1/00;H04L9/00;H04L9/06;H04L9/28 |
主分类号 |
H04K1/04 |
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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