Microcircuit card, has control unit generating control signal at high level during normal operation and at low level when attack is detected, and combining unit combining control signal and vital signal to generate secure vital signal

摘要

The microcircuit card (200) has a detecting unit for detecting an attack on the card, and a control unit (130) for generating a control signal (SC) at a high level during normal operation and at a low level when an attack is detected. A combining unit combines the control signal and a vital signal (SIV) of the card to generate a secure vital signal (SIVS). A capacitor (140) is provided for blowing a fuse (250) when the attack is detected, where an inverting gate (260) is connected in series to the fuse.