Apparatus for detecting an attack on an electric circuit
AssigneeInfineon Technologies AG
InventorsMARCUS JANKE, Peter Laackmann
Life of this patent
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Abstract
An apparatus for detecting an attack on an electric circuit, wherein the electric circuit includes a current consumption threshold value discriminator to determine whether current consumption of the electric circuit exceeds a predetermined threshold value or not, and to generate a binary current limitation signal depending therefrom. The apparatus includes a monitor for monitoring the binary current limitation signal over a predetermined time interval, in order to indicate a signal characterizing the current consumption of the electric circuit over the predetermined time interval, and a detector for detecting an attack on the electric circuit based on the monitoring signal.
Claims14
An apparatus for detecting an attack on an electric circuit, wherein the electric circuit comprises a current consumption threshold value discriminator formed to determine whether current consumption of the electric circuit exceeds a predetermined threshold value and to generate a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value, the apparatus comprising:
- a monitor for monitoring the binary current limitation signal over a predetermined time interval and outputting a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- a detector for detecting an attack on the electric circuit based on the monitoring signal.
A method of detecting an attack on an electric circuit, comprising:
- determining whether current consumption of the electric circuit exceeds a predetermined threshold value;
- generating a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value;
- monitoring the binary current limitation signal over a predetermined time interval;
- generating a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- detecting an attack on the electric circuit based on the monitoring signal.
A digital storage medium with electronically readable control signals capable of interacting with a programmable computer system so that a method of detecting an attack on an electric circuit is executed, the method comprising:
- determining whether current consumption of the electric circuit exceeds a predetermined threshold value;
- generating a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value;
- monitoring the binary current limitation signal over a predetermined time interval;
- generating a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- detecting an attack on the electric circuit based on the monitoring signal.
A computer program product with program code stored on a machine-readable carrier for performing, when the computer program product is executed on a computer, a method of detecting an attack on an electric circuit, comprising:
- determining whether current consumption of the electric circuit exceeds a predetermined threshold value;
- generating a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value;
- monitoring the binary current limitation signal over a predetermined time interval;
- generating a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- detecting an attack on the electric circuit based on the monitoring signal.
A computer program with program code for performing, when the program is executed on a computer, a method of detecting an attack on an electric circuit, comprising:
- determining whether current consumption of the electric circuit exceeds a predetermined threshold value;
- generating a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value;
- monitoring the binary current limitation signal over a predetermined time interval;
- generating a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- detecting an attack on the electric circuit based on the monitoring signal.
An apparatus for detecting an attack on an electric circuit, wherein the electric circuit comprises a current consumption threshold value discriminator formed to determine whether current consumption of the electric circuit exceeds a predetermined threshold value and to generate a binary current limitation signal having a first binary value if the current consumption falls below the predetermined threshold value, and a second binary value if the current consumption exceeds the predetermined threshold value, the apparatus comprising:
- a monitoring means for monitoring the binary current limitation signal over a predetermined time interval and for outputting a monitoring signal characterizing the current consumption of the electric circuit over the predetermined time interval;
- and
- a detecting means for detecting an attack on the electric circuit based on the monitoring signal.
Dependencies are inferred from the claim text.