首页>
外国专利>
CHARGE PUMP BASED SUBSYSTEM FOR SECURE SMART-CARD DESIGN
CHARGE PUMP BASED SUBSYSTEM FOR SECURE SMART-CARD DESIGN
展开▼
机译:用于安全智能卡设计的基于电荷泵的子系统
展开▼
页面导航
摘要
著录项
相似文献
摘要
A smart card includes a power source, a processing chip, and a charge-pump subsystem for powering the processing chip. The charge-pump subsystem includes a capacitor which is connected cyclically to the power source to charge the capacitor, to the processing chip to power the processing chip, and to ground to discharge the capacitor. The charge-pump subsystem can include three such capacitors so that while one of them is charging, another is powering the processing chip, and a third is discharging. The charge- pump subsystem blocks attempts to discover a secret key in the processing chip by decorrelating power consumption from the internal operations of the processing device.
展开▼