Generation of random security circuit patterns for in-situ fabrication of tamper-respondent sensors

A computer system comprising:

• a memory;
• and
• at least one processor in communication with the memory, wherein the computer system is configured to perform a method, the method comprising:
• establishing a random security circuit pattern for fabricating a security circuit of a tamper-respondent sensor to enclose, at least in part, one or more components within a secure volume, the establishing comprising:
• generating a trace pattern extending once through nodes of a plurality of nodes dispersed within an area of the tamper-respondent sensor;
• and
• randomly modifying the trace pattern to produce a randomly modified trace pattern with a desired randomization index relative to a specified randomization threshold, and providing the randomly modified trace pattern as the random security circuit pattern;
• and
• initiating fabricating of the tamper-respondent sensor in-situ on a surface of an enclosure to facilitate defining the secure volume, the fabricating using the random security circuit pattern.

A computer program product comprising:

• one or more computer readable storage media and program instructions collectively stored on the one or more computer readable storage media readable by at least one processer to:
• establish a random security circuit pattern for fabricating a security circuit of a tamper-respondent sensor to enclose, at least in part, one or more components within a secure volume, the establishing comprising:
• generating a trace pattern extending once through nodes of a plurality of nodes dispersed within an area of the tamper-respondent sensor;
• and
• randomly modifying the trace pattern to produce a randomly modified trace pattern with a desired randomization index relative to a specified randomization threshold, and providing the randomly modified trace pattern as the random security circuit pattern;
• and
• initiate fabricating of the tamper-respondent sensor in-situ on a surface of an enclosure to facilitate defining the secure volume, the fabricating using the random security circuit pattern.