发明名称 |
Information security device, prime number generation device, and prime number generation method |
摘要 |
An information security device receives an input of prime q, and generates prime N that is larger than prime q. In the information security device, a partial information setting unit generates number u such that 2xuxq+1 NOTEQUAL 0 mod Li (i=1, 2, ... , n). A random number generating unit generates random number R'. A judgement target generating unit generates R=u+L1xL2x...xLnxR' and N=2xRxq+1, using number u and random number R'. A primality judging unit judges the primality of number N, using numbers N and R generated by the judgement target generating unit. <IMAGE> |
申请公布号 |
EP1465366(B1) |
申请公布日期 |
2007.06.13 |
申请号 |
EP20040013183 |
申请日期 |
2002.04.16 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUTA, YUICHI;ONO, TAKATOSHI;OHMORI, MOTOJI |
分类号 |
H04L9/30;G06F7/72 |
主分类号 |
H04L9/30 |
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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