发明名称 |
A METHOD OF GENERATING ARBITRARY NUMBERS GIVEN A SEED |
摘要 |
<p>The invention provides a method of generating arbitrary numbers given a seed, characterized by providing a challenge derived from the seed to a physical token, receiving an initial response from the physical token, combining the initial response with helper data associated with the challenge to produce a stable response, and generating the arbitrary numbers using a pseudo-random number generator using the stable response as a seed for the generator. Preferably one or more of these pseudo-random permutations are used as one or more round function(s) in a Feistel block cipher. The generated arbitrary numbers may also be used to create a cryptographic key.</p> |
申请公布号 |
EP2089794(B1) |
申请公布日期 |
2010.03.03 |
申请号 |
EP20070849250 |
申请日期 |
2007.11.26 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
KERINS, TIMOTHY;KURSAWE, KLAUS;TUYLS, PIM T. |
分类号 |
G06F7/58 |
主分类号 |
G06F7/58 |
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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