Process for making secure the writing of sensitive data into the

Details Process for making secure the writing of sensitive data into the Process for making secure the writing of sensitive data into the

1994-05-25

1996-07-02

Hajec, Donald T.

Registers

Systems controlled by data bearing records

Credit or identification card systems

395200, G06K 0500

Patent

active

055324630

ABSTRACT:
Process and memory card (1) for making secure the writing of sensitive data into the EEPROM data storage memory (2) of the card, consisting, during each write, in performing the following operations in succession:

REFERENCES:
patent: 4827115 (1989-05-01), Uchida et al.
patent: 5214774 (1993-05-01), Welsch et al.

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