发明名称 |
METHOD FOR MANAGING CIPHERING KEYS FOR A SYMMETRIC CRYPTOGRAPHY SYSTEM AND DEVICE GENERATING THE CIPHERING KEYS POUR IMPLEMENTING THE METHOD |
摘要 |
<p>The present invention relates to a method for the management of ciphering keys for a symmetric crypography system comprising the following steps: the initial communication, through an authority common to entities susceptible of exchanging ciphered information, of a private key Fi(arg) = F(cs;UTILi; arg) comprised of a bijective function, parametered specifically for each of the addressees UTILi, and, at the time when each of the ciphered transactions is performed, by the data user sender: a) constructing a key CLEi = Fi(UTILj; VAR); b) by the data user addressee: b) calculating the key CLEj = Fj(UTILi; VAR). It also relates to a device for implementing said method.</p> |
申请公布号 |
EP0845179(A1) |
申请公布日期 |
1998.06.03 |
申请号 |
EP19960929340 |
申请日期 |
1996.08.14 |
申请人 |
ROUTIER, CHRISTINE FRANCE ISABELLE;LEFEVRE, FRANCK JEAN PIERRE ANDRE ROLAND;LEFEVRE, JEAN-PIERRE |
发明人 |
ROUTIER, CHRISTINE FRANCE ISABELLE;LEFEVRE, FRANCK JEAN PIERRE ANDRE ROLAND;LEFEVRE, JEAN-PIERRE |
分类号 |
H04L9/08;(IPC1-7):H04L9/08;H04L9/32 |
主分类号 |
H04L9/08 |
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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