Method for secure storage of sensitive data in a memory of an embedded microchip system, particularly a smart card, and embedded system implementing the method
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 21, 2007
Grant Date -
Aug 8, 2002
app pub date -
Jun 8, 2001
filing date -
Jun 8, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a method for secure storage of a piece of so-called sensitive data, for example an encryption key, in a memory (M) of an embedded microchip system, particularly a smart card (CP). The memory (M) comprises two physically distinct storage devices (1, 2), for example a permanent memory of the 'ROM' type (1), and a second, re-programmable memory of the 'EEPROM' type (2). The piece of sensitive data is divided into at least two parts (d, d'), in a given logical configuration, each of these parts being stored in one of the distinct storage devices (1, 2). An additional piece of verification data, a checksum or hash data, can also be stored in the first storage device (1), at the same time as the first sensitive data part (d).The invention also concerns an embedded microchip system, particularly a smart card (CP).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully