Equipped with a system for implementing electronic chip-based systems, and the safety of how to save sensitive data in memory of the chip card in particular, its way

摘要

(57) electronic chip-based systems, to the memory M of the chip card CP, [summary] The present invention data is said to be sensitive, for example, on how to safely recorded the encryption key in particular. Save mechanism 1 and 2 are two physically distinct, for example, the memory M includes a fixed memory of one "ROM" type, and reprogrammable memory 2 of "EEPROM" type. The logical configuration that is determined, is divided portions two d and d '', at least, each of the portions thereof, sensitive data is recorded within one of the memory mechanism 1 and 2 are distinguished. Additional data for verification, that is, simultaneously with the first part of the sensitive data d, hash or checksum data can be recorded as an additional mechanism in the first one of the memory. The present invention also relates to electronic chip-based systems, is related to the chip card CP in particular.