发明名称 |
CURRENT SOURCE FOR CRYPTOGRAPHIC PROCESSOR |
摘要 |
To provide increased security against differential power analysis attacks, a data processing device is provided with a current converter (10) that draws current from an external supply (Vcc) and cyclically apportions drawn current between a charge storage device (c) and a processor (11) such that the drawn current varies independently of the instantaneous power demand of the processor (11). The data processing device includes: a processor (11); a charge storage device (c) coupled to the processor (11); and a current source (10) for supplying the processor (11) with operating current, and adapted to vary its output current independently of the instantaneous power demand of the processor (11). |
申请公布号 |
WO2004025444(A3) |
申请公布日期 |
2004.09.10 |
申请号 |
WO2003IB03963 |
申请日期 |
2003.08.29 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V.;HUBERT, GERARDUS, T., M. |
发明人 |
HUBERT, GERARDUS, T., M. |
分类号 |
G06F21/55;G06K19/07;H04L9/10 |
主分类号 |
G06F21/55 |
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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