Transfer of security data between two memories

The invention devotes to providing (24) transmits of the electronic processing device (10) nonvolatile memory data storage requirement (22) method and electronic processing device, and preventing to handwriting to test device (16). Therefore, the monitoring unit (28) is security data from the nonvolatile memory (24) duplicates the working storage (22), determining to safety data (30) blocking on the working storage, the openings device for monitoring and working storage, and security data for working storage for preventing to duplicates and writing attempt, type of the step (14) pair of with the data - processing environment's central processing unit, to enable the central processing unit the safety processing data.