发明名称 |
Device for verifying use qualifications |
摘要 |
Authentication is performed at a high speed even in a device with small CPU power and memory. A challenge information computation unit of a verification instrument generates a random number and transfers the random number and identification information together as challenge information to a proving instrument. A unidirectional function computation unit of a proving instrument applies a unidirectional function to private information stored in a private information memory unit and right identification information of challenge information. A response information computation unit performs operations on a computation result of the unidirectional function and the proof support information to obtain proof information. A unidirectional function computation part applies a unidirectional function to the proof information and a random number contained in the challenge information to obtain response information and returns it to the verification unit. A unidirectional function computation unit of the verification instrument applies a unidirectional function to the proof information and a random number of the challenge information. A response information verification instrument compares the application result of the unidirectional function with the response information and acknowledges use qualifications if and only if they coincide.
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申请公布号 |
US6389536(B1) |
申请公布日期 |
2002.05.14 |
申请号 |
US19990236393 |
申请日期 |
1999.01.25 |
申请人 |
FUJI XEROX CO., LTD. |
发明人 |
NAKATSUYAMA HISASHI |
分类号 |
G06K19/10;G06F21/00;G06F21/22;G07F7/10;G09C1/00;H04L9/32;(IPC1-7):H04L9/00;H04L9/28;H04L9/30;H04K1/00 |
主分类号 |
G06K19/10 |
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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