发明公开
EP0896452A2 Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
审中-公开
用于执行该方法用于数据加密/Entschlüsselungsumwaldlung和设备和数据通信系统中的方法
- 专利标题： Data encrypting/decrypting conversion methods and apparatuses and data communication system adopting the same
- 专利标题（中）： 用于执行该方法用于数据加密/Entschlüsselungsumwaldlung和设备和数据通信系统中的方法
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申请号： EP98114719.2申请日： 1998-08-05
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公开(公告)号： EP0896452A2公开(公告)日： 1999-02-10
- 发明人: Aikawa, Makoto , Takaragi, Kazuo , Koreeda, Hiroyuki , Sasamoto, Manabu , Okamoto, Hiroo , Noguchi, Takaharu , Furuya, Soichi , Hirahata, Shigeru
- 申请人： Hitachi, Ltd.
- 申请人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 代理机构： Altenburg, Udo, Dipl.-Phys.
- 优先权： JP213327/97 19970807
- 主分类号： H04L9/06
- IPC分类号： H04L9/06
摘要：
Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means (201, 202, 203) for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means (606) for selecting fixed cyclic shift processing means (201, 202, 203). The selecting sequence determined by the cyclic shift processing means is determined on the basis of data (G1, G2, G3) for determining the shift number selecting sequence.
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