Calculator, communication set comprising such a calculator, railway management system comprising such a set, and data reliability method on a calculator

摘要

Calculator, communication set comprising such a calculator, railway management system comprising such a set, and data reliability method in a calculator. It is a data reliability method in a calculator (6), and the calculator (6) is suitable for providing an output data (ds) from an input data (de), and which contains at least two data processing modules (12a, 12b), and a calculation member (14) connected to each processing module (12a, 12b) comprising a calculation step by each processing module (12a, 12b) of an intermediate data (day, dib) from the input data (de). The method comprises the following steps: - calculating, through each treatment module (12a, 12b), an intermediate security code (csia, csib) from the corresponding intermediate data (dia, dib), - transmitting to the member of calculation (14), through each treatment module (12a, 12b), the intermediate security code (csia, csib) and the intermediate data (day, dib), - calculate, by means of the calculation member (14), a security code (cs) from the intermediate security codes (csia, csib), - select, through calculation member (14), an intermediate data from the intermediate data (day, dib) received, where the data of The output (ds) of the calculator (6) comprises the selected intermediate data, and - transmitting to the destination of a receiving device (8), through the calculation member (14), the security code (cs) and the input data. output (ds).