Protecting log files involves data processing system security module providing information for each entry in log file, whereby each entry has associated function value, especially digital signature

摘要

The method involves protecting log files with a data processing system against prohibited changes by generating a second entry for an entry in the log file. The data processing system has a security module that provides, especially continuous, information for each entry in the log file and whereby each entry has an associated function value, especially a digital signature, determined at least from the information and the entry.