Integrated circuit containing a protected memory and secured sys

Details Integrated circuit containing a protected memory and secured sys Integrated circuit containing a protected memory and secured sys

1994-10-27

1997-01-14

Barr on, Jr., Gilberto

Cryptography

Cryptanalysis

364DIG1, 364DIG2, 3642468, 364969, G06F 1214

Patent

active

055947930

ABSTRACT:
To provide efficient protection, in reading mode, of the stored data elements, the integrated circuit has an EEPROM type memory and a lock (L) protecting the zone of the memory. The memory contains a read-protected password (PW) and the circuit has means to release the lock (L) if the circuit receives a write command at the address of the password of the same encrypted password (PW). Application notably to electronic systems and instruments using confidential codes, such as car radios.

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