Systems, methods, and apparatus to enhance the integrity assessment when using power fingerprinting systems for computer-based systems

An apparatus, comprising:

• a first preprocessor configured to be collocated with a first target component of a system, the first preprocessor receiving side-channel information of a first target component of a system when the first preprocessor and the first target component are operational, the side-channel information of the first target component being associated with a plurality of authorized execution statuses of the first target component and an execution status of the first target component;
• a second preprocessor configured to collocated with a second target component of the system, the second preprocessor receiving side-channel information of the second target component when the second preprocessor and the second target component are operational, the side-channel information of the second target component being associated with a plurality of authorized execution statuses of the second target component and an execution status of the second target component;
• and
• a processor physically separate from the first target component and the second target component, the processor operatively coupled the first preprocessor and the second preprocessor, the processor sending, when operational, a reporting signal based on at least one of (1) a power fingerprint for the first target component and an execution status of the first target component, or (2) a power fingerprint for the second target component and an execution status of the second target component,
• the power fingerprint for the first target component being based on the side-channel information for the first target component and representing the plurality of authorized execution statuses of the first target component, the power fingerprint for the second target component being based on the side-channel information for the second target component and representing the plurality of execution statuses of the second target component.

A method, comprising:

• obtaining a power fingerprint for a first target component of a system based on a side-channel information for the first target component, the power fingerprint for the first target component representing a plurality of authorized execution statuses of the first target component, the side-channel information of the first target component being received from a first preprocessor collated with the first target component and being associated with a plurality of authorized execution statuses of the first target component and an execution status of the first target component;
• obtaining a power fingerprint for a second target component of the system based on the side-channel information for the second target component, the power fingerprint for the second target component representing a plurality of execution statuses of the second target component, the side-channel information of the second target component being received from a second preprocessor collated with the second target component and being associated with a plurality of authorized execution statuses of the second target component and an execution status of the second target component;
• and
• sending, by a processor physically separate from the first target component and the second target component, a reporting signal based on at least one of (1) the power fingerprint for the first target component and an execution status of the first target component, or (2) the power fingerprint for the second target component and an execution status of the second target component.