Micro-controller protected against current attacks

Details Micro-controller protected against current attacks Micro-controller protected against current attacks

2005-02-01

2005-02-01

Lee, Michael G. (Department: 2876)

Registers

Records

Conductive

C235S380000, C235S382000, C235S382500, C361S737000, C713S152000, C713S500000

Reexamination Certificate

active

06848619

ABSTRACT:
The invention concerns a microcontroller (30) intended to be incorporated in a portable object (1) of type smartcard, including at least:a contact stud (VCC) to supply the said microcontroller (30) with current; a data input and/or output contact stud (I/O); an efficient data processing part (μCE); and confidential information. According to the invention, the microcontroller also includes: means (GEN, CAP, COM) to vary the supply voltage of the efficient data processing part (μCE), the said means being able to secure the said confidential data against current attacks.

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