Hi,
Per https://datatracker.ietf.org/doc/html/draft-tschofenig-rats-psa-token-07 (which is latest spec I can find for profile 1 token):
The Certification Reference claim is used to link the class of chip and PSA RoT of the attesting device to an associated entry in the PSA Certification database. It MUST be represented as a thirteen-digit [EAN-13https://www.gs1.org/standards/barcodes/ean-upc].¶https://datatracker.ietf.org/doc/html/draft-tschofenig-rats-psa-token-07#section-3.2.3-1
Linking to the PSA Certification entry can still be achieved if this claim is not present in the token by making an association at a Verifier between the reference value and other token claim values - for example, the Implementation ID.¶https://datatracker.ietf.org/doc/html/draft-tschofenig-rats-psa-token-07#section-3.2.3-2
psa-certification-reference-type = text .regexp "[0-9]{13}"
psa-certification-reference = (
? psa-certification-reference-key =>
psa-certification-reference-type
)
But in the tf-m-tools repo:
iat-verifier\iatverifier\psa_iot_profile1_token_claims.py it checks for PSA 2.0 profile HW version which is EAN-13 + 5.
class HardwareVersionClaim(AttestationClaim): """Class representing a PSA Attestation Token Hardware version claim""" def verify(self, token_item): self._check_type('HARDWARE_VERSION', token_item.value, str)
value_len = len(token_item.value) expected_len = 19 # 'EAN13-Version' 13 + 1 + 5. e.g.:0604565272829-10010 if len(token_item.value) != expected_len: msg = 'Invalid HARDWARE_VERSION length; must be {} characters, found {} characters' self.verifier.error(msg.format(expected_len, value_len)) for idx, character in enumerate(token_item.value): if character not in string.digits: if idx != 13 or character not in '-': msg = 'Invalid character {} at position {}' self.verifier.error(msg.format(character, idx+1))
It seems like this was changed 3yrs ago: SHA-1: 8ac8d17d15353c7f7933ae8065646946ae47f993 * Fix HW Version claim expected length www.psacertified.org issuing HW versions of format '[0-9]{13}-[0-9]{5}'. It is called 'certification reference': https://www.psacertified.org/certified-products/ Signed-off-by: Tamas Ban tamas.ban@arm.com Change-Id: I0417e1ce76896f1128864676f29a4314b3fd1fb8
When I run "check_iat" script, I get these errors:
./scripts/check_iat -k public_key.pem -K -p -t PSA-IoT-Profile1-token cc27xx.cbor ERROR:iat-verifiers:Invalid HARDWARE_VERSION length; must be 19 characters, found 13 characters ERROR:iat-verifiers:Invalid character i at position 1 ERROR:iat-verifiers:Invalid character r at position 2 ERROR:iat-verifiers:Invalid character m at position 3 ERROR:iat-verifiers:Invalid character w at position 4 ERROR:iat-verifiers:Invalid character a at position 5 ERROR:iat-verifiers:Invalid character r at position 6 ERROR:iat-verifiers:Invalid character e at position 7 ERROR:iat-verifiers:Invalid character . at position 8 ERROR:iat-verifiers:Invalid character o at position 9 ERROR:iat-verifiers:Invalid character r at position 10 ERROR:iat-verifiers:Invalid character g at position 11 ERROR:iat-verifiers:Invalid character at position 12 ERROR:iat-verifiers:Invalid character at position 13
Is the verifier tool incorrect or should I be following "EAN13-Version' 13 + 1 + 5" even for profile 1 token?
Regards,
Brian Quach SimpleLink MCU Texas Instruments Inc. 12500 TI Blvd, MS F-4000 Dallas, TX 75243 214-479-4076