open-standards/wai/live-conformance/c2pa-identity/vectors.json
Transaction Science 1a63a8d66e
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Identity assertions validate in the C2PA SDK's validator: the holder signs the schema's order by default, a verifier accepts either serialization
Every identity assertion WAI wrote was reported cawg.x509.signature.mismatch by the C2PA SDK's
validator. Read at their sources: Identity Assertion 1.0 to 1.3 §8.2.1 (the payload is serialized
in RFC 8949 §4.2.1's core deterministic encoding and those bytes are signed; no later version or
erratum), and the c2pa crate at 0.91.7 and 0.91.11, its newest release, which signs and verifies
its own serialization of the payload's members in the schema's order (referenced_assertions,
sig_type, role; url, alg, hash) with the writer that keeps declaration order. The bytes signed
were the whole difference: the COSE structure, protected header, sig_type, hashed URIs and chain
of a WAI assertion and of one the SDK's builder writes are the same.

c2pa-binding §4.10, §4.11, §6.2 step 12, §6.3, §9.2, §9.3 and decisions D6 (revised): a writer
signs the schema's order by default and may be asked for the core deterministic encoding
(identity::Signed); the stored assertion stays deterministic either way. The verifier accepts a
signature over either serialization of the payload's members, states which, and refuses one over
a third order, over other members, or by another key. On the SDK's path an identity assertion is
read in any well-formed encoding (one the SDK's builder wrote is accepted) and a map with a key
twice is refused.

Tests run the SDK's validator, configured with the corpora's anchors, on manifests signed
through the SDK and on the store writer's stores beside their envelopes: trusted, no failure
code, cawg.x509.credential.trusted, cawg.x509.signature.validated and cawg.identity.well-formed
for each identity assertion. The strict form gets exactly cawg.x509.signature.mismatch, pinned.
c2pa-sdk-identity/vectors.json pins the validator's report of every file at the SDK's version.

Both corpora regenerated with their tools (c2pa-identity byte for byte on x86_64 and aarch64);
new vectors for the strict form, the SDK builder's assertion, a signature over a third order and
over other members. Both Python verifiers compute the two serializations themselves and are
caught without either and when they take the members in any order. The wire break and the
three API changes are acknowledged in the change note.

Co-Authored-By: Claude Fable 5.2 <[email protected]>
2026-11-11 09:58:01 -05:00

1681 lines
64 KiB
JSON

{
"extension": "c2pa-binding",
"corpus": "c2pa-identity",
"time": "2026-11-09T12:00:00Z",
"anchors": [],
"vectors": [
{
"name": "bound-full",
"envelope": "objects/4fca84b4ec4f6afa6896c9d79aaa4b2b8c049bafe81f66216f3c66dc8ec81ce7.wai",
"store": "objects/4fca84b4ec4f6afa6896c9d79aaa4b2b8c049bafe81f66216f3c66dc8ec81ce7.c2pa",
"receipts": "objects/4fca84b4ec4f6afa6896c9d79aaa4b2b8c049bafe81f66216f3c66dc8ec81ce7.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
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"form": "WAI1",
"contentHash": "4fca84b4ec4f6afa6896c9d79aaa4b2b8c049bafe81f66216f3c66dc8ec81ce7",
"capabilities": [
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],
"manifestId": "urn:c2pa:e6939f20-6207-433e-9f53-d1b09f2b8e5f",
"sourceType": "http://cv.iptc.org/newscodes/digitalsourcetype/algorithmicMedia",
"signer": "336ff1ec6a9b8dfb9cf483f48670146492cff200fa872592721a77922b6c5a14",
"receipt": "25110abab2affacbd049ebd714e97764ba355c1bf318e5adb9c178a6817cc3cc",
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],
"softBindings": [
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"scheme": "wai-mark:tent64",
"value": "034b1359d4cfe19a",
"robustnessClaim": "c53014a9be51fe1e0df70078845d52db59d9c0862b44be23a27603a444844550"
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"identities": [
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"roles": [
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],
"actor": "ae677f1ad47dfbd509cf3b66fe931819a700ff8c61d1fd1a774b757eb41e2875",
"referenced": [
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],
"signed": "schema",
"trustList": {
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},
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],
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"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
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],
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],
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"expect": {
"outcome": "refuse",
"reason": "identity_signature_mismatch",
"c2pa": "cawg.x509.signature.mismatch"
}
},
{
"name": "identity-untrusted",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-untrusted/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_credential_untrusted",
"c2pa": "cawg.x509.credential.untrusted"
}
},
{
"name": "identity-expired",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-expired/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
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"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_credential_expired",
"c2pa": "cawg.x509.signature.outside_validity"
}
},
{
"name": "identity-wrong-purpose",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-wrong-purpose/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_credential_invalid",
"c2pa": "cawg.x509.credential.untrusted"
}
},
{
"name": "identity-pad-nonzero",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-pad-nonzero/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_pad_invalid",
"c2pa": "cawg.identity.pad.invalid"
}
},
{
"name": "identity-sig-type-unknown",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-sig-type-unknown/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_sig_type_unknown",
"c2pa": "cawg.identity.sig_type.unknown"
}
},
{
"name": "identity-duplicate-reference",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-duplicate-reference/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_assertion_duplicate",
"c2pa": "cawg.identity.assertion.duplicate"
}
},
{
"name": "identity-hard-binding-missing",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-hard-binding-missing/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_hard_binding_missing",
"c2pa": "cawg.identity.hard_binding_missing"
}
},
{
"name": "identity-pad1-missing",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-pad1-missing/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_malformed",
"c2pa": "cawg.identity.cbor.invalid"
}
},
{
"name": "identity-algorithm",
"envelope": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.wai",
"store": "identity-algorithm/store.c2pa",
"receipts": "objects/4792e5f36f22cbc158583def88cdfc7987772328fc56044cf8cadee76691b3cd.receipts.json",
"claimLists": [
{
"file": "trust/claim-signers.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/claim-signers",
"type": "c2pa.trustList",
"digest": "fcf6cdf23bb26b09b7f352f9887141690b22e511d7c770104d051ae0a735c51a"
}
],
"identityLists": [
{
"file": "trust/identities.json",
"uri": "tag:transaction.science,2026:wai/c2pa-identity/identities",
"type": "science.transaction.wai.identityTrustList",
"digest": "4b9bf83fefa1a4a9834dda36b8524a2f3324875c573c819f470c9fa194ffb5e5"
}
],
"robustness": [
"robustness/record.json",
"robustness/claim.json"
],
"expect": {
"outcome": "refuse",
"reason": "identity_algorithm_unsupported",
"c2pa": "cawg.x509.algorithm.unsupported"
}
}
]
}