DEVICE FOR PROTECTING ERROR INJECTION IN AN ASYNCHRONOUS LOGIC BLOCK OF AN ELEMENTARY LOGIC MODULE

摘要

The invention relates to a logic circuit comprising a logic module (10) comprising a functional logic block (11) providing a functional result (R), and a functional latch (12) receiving the functional result (R) and providing a synchronous result ( CT). According to the invention, a control module (50) of the functional logic block comprises a non-functional logic block (51) performing the same logic function as the functional logic block and providing a non-functional result (SR '), synchronous non-functional latches. functionalities (52) for applying to the input of the non-functional logic block data present at the input of the functional logic block, and means (55) for comparing the functional result and the non-functional result and providing a first signal of error (ER3).