Method and device for generating a random number in a USB (universal serial bus) peripheral
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United States of America Patent
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Jun 7, 2011
Grant Date -
Apr 2, 2009
app pub date -
Jan 12, 2007
filing date -
Jan 12, 2006
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Abstract
A method for generating a random number, comprising steps of receiving a data transmission binary signal subjected to phase jitter, generating several oscillator signals substantially of a same average frequency and having distinct respective phases, sampling a status of each of the oscillator signals upon the appearance of edges of the binary signal, and of generating a random number using the statuses of each of the oscillator signals. The method may be applied to an integrated circuit usable in a smart card.
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