METHOD FOR SECURELY STORING DATA IN A MEMMORY OF A PORTABLE DATA CARRIER

摘要

The invention relates to a method for securely storing data in a multilevel memory of a portable data carrier. The multilevel memory comprises one or several multilevel memory cells (SZ) which can assume respectively at least three levels (E, NE). The at least three levels represent a different data content, regarding which respective levels (E, NE) of a memory cell (SZ) are defined as valid or invalid. The levels (E, NE) of a respective memory cell (SZ) are selectively defined as valid or invalid in dependence on a required security level.