Method and hardware for accelerated test-data authentication

A method comprising:

• storing final hashes of each block chain authentication (BCA) section of an in-system test (IST) image for an integrated circuit (IC) in a write-protected portion of a memory of the IC;
• receiving at least one Public Key Authentication (PKA) signature;
• authenticating the at least one PKA signature using a public key cryptography (PKC) algorithm;
• once the PKA signature is authenticated, using the final hash for each BCA section to authenticate a portion of the IST image associated with each BCA section while skipping PKA signature checks for any of the final hashes;
• and
• testing portions of the IC with the authenticated IST image portion.

A non-transitory computer-readable storage medium comprising instructions that, when executed by a processing device, cause the processing device to perform operations comprising:

• storing final hashes of each block chain authentication (BCA) section of an in-system test (IST) image for an integrated circuit (IC) in a write-protected portion of a memory of the IC;
• receiving at least one Public Key Authentication (PKA) signature;
• authenticating the at least one PKA signature using a public key cryptography (PKC) algorithm;
• once the PKA signature is authenticated, using the final hash for each BCA section to authenticate a portion of the IST image associated with each BCA section while skipping PKA signature checks for any of the final hashes;
• and
• testing portions of the IC with the authenticated IST image portion.

An autonomous driving system comprising a plurality of integrated circuits (ICs), wherein at least one of the plurality of ICs comprises:

• a memory;
• and
• at least one processing core, operatively coupled to the memory to perform operations comprising:
• storing final hashes of each block chain authentication (BCA) section of an automotive run-time in-system test (RIST) image in a write-protected portion of the memory;
• receiving at least one Public Key Authentication (PKA) signature;
• authenticating the at least one PKA signature using a public key cryptography (PKC) algorithm;
• once the PKA signature is authenticated, using the final hash for each BCA section to authenticate a portion of the automotive RIST image associated with each BCA section while skipping PKA signature checks for any of the final hashes;
• and
• testing portions of the at least one of the plurality of ICs with the authenticated automotive RIST image portion.

A server of a data center, the server comprising a plurality of integrated circuits (ICs), wherein at least one of the plurality of ICs comprises:

• a memory;
• and
• at least one processing core, operatively coupled to the memory to perform operations comprising:
• storing final hashes of each block chain authentication (BCA) section of a run-time in-system test (RIST) image for the at least one processing core of the server of the data center in a write-protected portion of the memory;
• receiving at least one Public Key Authentication (PKA) signature;
• authenticating the at least one PKA signature using a public key cryptography (PKC) algorithm;
• once the PKA signature is authenticated, using the final hash for each BCA section to authenticate a portion of the RIST image for the at least one processing core of the server of the data center associated with each BCA section while skipping PKA signature checks for any of the final hashes;
• and
• testing portions of the at least one of the plurality of ICs with the authenticated RIST image portion for the at least one processing core of the server of the data center.