Device having a control unit and a nonvolatile memory

摘要

The device has a control unit with memory devices and a nonvolatile memory connected to the control unit for data exchange purposes. Data are stored in encrypted form in the nonvolatile memory. The key or keys for encrypting the data are stored in the memory devices or are generated by an algorithm executed in the control unit. An address pointer that indicates the address of a valid key in the control unit is stored in the nonvolatile memory and/or in a volatile memory of the control unit.