Memory card

Details Memory card Memory card

2004-06-17

2008-08-26

Zand, Kambiz (Department: 2134)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

Reexamination Certificate

active

07418602

ABSTRACT:
In order to protect the user security data, provided is a memory card capable of preventing the data leakage to a third party not having the access authority by imposing the limitation on the number of password authentications and automatically erasing the data. In a system comprised of a multimedia card and a host machine electrically connected to the multimedia card and controlling the operations of the multimedia card, a retry counter for storing the number of password authentication failures is provided and the upper limit of the number of failures is registered in a register. When passwords are repeatedly entered once, twice, . . . and n times and the retry counter which counts the entries reaches the upper limit of the number of failures, the data is automatically erased so as not to leave the data in the flash memory.

REFERENCES:
patent: 5210795 (1993-05-01), Lipner et al.
patent: 5636096 (1997-06-01), Mardirossian
patent: 6498748 (2002-12-01), Ikeda
patent: 7159120 (2007-01-01), Muratov et al.
patent: 10-79197 (1998-03-01), None
patent: 11-345494 (1999-12-01), None
MultiMediaCard System Specification, Version 3.1, MMCA, Jun. 2001, pp. 32-34.

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