Method for protecting data confidentiality in memory e.g. static RAM for processor of computer system, involves encrypting data written in memory using selected address-dependent random number

摘要

The method involves selecting a memory cell which is used as unique and related to memory cell address data. A random particular address transformation is executed prior to or at an address of a memory (401) using the unique address data determined at random in new mapping unique addresses. The data that are written in the memory are encrypted using selected address-dependent random number. An independent claim is included for an arrangement for protecting data confidentiality in memory.