发明名称 |
Process for the dissimulaton of a secret code in a data authentication device |
摘要 |
A process for the dissimulation of concealment of a secret code in a data authentication device by encrypting the secret code by an encrypting function for forming an image of the secret code and storing the secret code image in the authentication device. Beforehand, an encrypting function is chosen such that with each stored secret code image corresponds a plurality of antecedent codes all differing from the secret code, but which, once encrypted by the encrypting function have an image identical to that of the secret code. The secret code of a user has an authentication device in which is stored the secret code image.
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申请公布号 |
US5894519(A) |
申请公布日期 |
1999.04.13 |
申请号 |
US19970838646 |
申请日期 |
1997.04.09 |
申请人 |
FRANCE TELECOM |
发明人 |
CLEMOT, OLIVIER;CAMPANA, MIREILLE;ARDITTI, DAVID |
分类号 |
G06F1/00;G06F21/00;G06F21/31;G06F21/34;H04L9/32;(IPC1-7):H04K1/00 |
主分类号 |
G06F1/00 |
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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