Voltage Glitch Detection In Integrated Circuit
AssigneeNXP B.V.
InventorsAndreas Lentz, Andreas Bernardus Maria Jansman
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Abstract
An integrated circuit for hardware security comprises a voltage glitch detection processing system comprising an oscillator circuit that generates and outputs a local oscillator clock which is a function of a supply voltage; a counter clocked by the oscillator circuit to generate at least one count value; and a capture section that synchronizes the at least one count value into a system clock domain for detecting a voltage glitch in the supply voltage.
Claims20
An integrated circuit for hardware security, comprising:
- a voltage glitch detection processing system, comprising:
- an oscillator circuit that generates and outputs a local oscillator clock, which is a function of a supply voltage;
- a counter clocked by the oscillator circuit to generate at least one count value;
- and
- a capture section that synchronizes the at least one count value into a system clock domain for detecting a voltage glitch in the supply voltage.
A voltage glitch detection processing system for a System-on-Chip device, comprising:
- an oscillator circuit that generates and outputs a local oscillator clock which is a function of a supply voltage;
- and
- a counter clocked by the oscillator circuit to generate at least one count value that are synchronized with a system clock to detect a voltage glitch in the supply voltage.
A method for detecting a supply voltage glitch attack at a hardware security integrated circuit, comprising:
- generating a first clock as a function of a supply voltage;
- generating a count value in response to the first clock;
- and
- synchronizing the count value into a second clock domain to detect a voltage glitch in the supply voltage.
Dependencies are inferred from the claim text.