FIELD: measurement equipment.
SUBSTANCE: method is disclosed to detect an attempt of security processor attack with the help of the security processor itself, containing stages, when: several different events are measured, which happen independently from each other in absence of attack attempts; the value of attack index is created depending on one index of the ratio between two different measured events. The ratio index is time proximity between two different measured events, and the attack attempt is found, if the attack index value exceeds the specified threshold.
EFFECT: detection of an attack attempt at a security processor with the help of directly a security processor.
8 cl, 4 dwg
