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Method for secure storage of sensitive data in a silicon chip integrated system storage in particular a smart card and integrated system therefor
Method for secure storage of sensitive data in a silicon chip integrated system storage in particular a smart card and integrated system therefor
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机译:用于将敏感数据安全地存储在硅芯片集成系统存储器,特别是智能卡中的方法及其集成系统
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摘要
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).
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