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 that draws current from an external supply and cyclically apportions drawn current between a charge storage device and a processor such that the drawn current varies independently of the instantaneous power demand of the processor. The data processing device includes: a processor; a charge storage device coupled to the processor; and a current source for supplying the processor with operating current, and adapted to vary its output current independently of the instantaneous power demand of the processor. |
申请公布号 |
EP1552368(A2) |
申请公布日期 |
2005.07.13 |
申请号 |
EP20030795164 |
申请日期 |
2003.08.29 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
HUBERT, GERARDUS T., M. |
分类号 |
G06F21/55;G06K19/07;H04L9/10;(IPC1-7):G06F1/26 |
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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