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Add vcdm 2.0 model and context #3436

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Add vcdm 2.0 model and context #3436

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7ba9b99
add vcdm 2.0 model and context
PatStLouis Jan 10, 2025
9879a4a
add backwards compatibility checks: limit proof type and add issuance…
PatStLouis Jan 10, 2025
262ae0a
seperate test fixtures, lint
PatStLouis Jan 10, 2025
5951683
replace issuanceDate tests
PatStLouis Jan 10, 2025
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11 changes: 7 additions & 4 deletions acapy_agent/messaging/valid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -875,8 +875,11 @@ def __call__(self, value):
class CredentialContext(Validator):
"""Credential Context."""

FIRST_CONTEXT = "https://www.w3.org/2018/credentials/v1"
EXAMPLE = [FIRST_CONTEXT, "https://www.w3.org/2018/credentials/examples/v1"]
FIRST_CONTEXT = [
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Perhaps rename to a VALID_CONTEXTS?

"https://www.w3.org/2018/credentials/v1",
"https://www.w3.org/ns/credentials/v2",
]
EXAMPLE = [FIRST_CONTEXT[0], "https://www.w3.org/2018/credentials/examples/v1"]

def __init__(self) -> None:
"""Initialize the instance."""
Expand All @@ -886,9 +889,9 @@ def __call__(self, value):
"""Validate input value."""
length = len(value)

if length < 1 or value[0] != CredentialContext.FIRST_CONTEXT:
if length < 1 or value[0] not in CredentialContext.FIRST_CONTEXT:
raise ValidationError(
f"First context must be {CredentialContext.FIRST_CONTEXT}"
f"First context must be one of {CredentialContext.FIRST_CONTEXT}"
)

return value
Comment on lines 889 to 897
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If value is None, there would be a TypeError.

Probably worth asserting that value is of expected type before calling len or [0].
(because a dev could try call with a string, and get unclear error message).

Something like:

    def __call__(self, value: List[str]) -> List[str]:
        """Validate input value."""
        if not isinstance(value, list):
            raise ValidationError("Value must be a non-empty list.")

        if not value or value[0] not in CredentialContext.FIRST_CONTEXT:
            raise ValidationError(
                f"First context must be one of {CredentialContext.FIRST_CONTEXT}"
            )

        return value

Expand Down
1 change: 1 addition & 0 deletions acapy_agent/vc/ld_proofs/constants.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@
SECURITY_CONTEXT_URL = SECURITY_CONTEXT_V2_URL
DID_V1_CONTEXT_URL = "https://www.w3.org/ns/did/v1"
CREDENTIALS_CONTEXT_V1_URL = "https://www.w3.org/2018/credentials/v1"
CREDENTIALS_CONTEXT_V2_URL = "https://www.w3.org/ns/credentials/v2"
SECURITY_CONTEXT_BBS_URL = "https://w3id.org/security/bbs/v1"
SECURITY_CONTEXT_ED25519_2020_URL = "https://w3id.org/security/suites/ed25519-2020/v1"

Expand Down
1 change: 1 addition & 0 deletions acapy_agent/vc/ld_proofs/document_downloader.py
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Expand Up @@ -40,6 +40,7 @@ class StaticCacheJsonLdDownloader:

CONTEXT_FILE_MAPPING = {
"https://www.w3.org/2018/credentials/v1": "credentials_context.jsonld",
"https://www.w3.org/ns/credentials/v2": "credentials_v2_context.jsonld",
"https://w3id.org/vc/status-list/2021/v1": "status_list_context.jsonld",
"https://www.w3.org/ns/did/v1": "did_documents_context.jsonld",
"https://w3id.org/security/v1": "security-v1-context.jsonld",
Expand Down
301 changes: 301 additions & 0 deletions acapy_agent/vc/ld_proofs/resources/credentials_v2_context.jsonld
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Original file line number Diff line number Diff line change
@@ -0,0 +1,301 @@
{
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"description": "https://schema.org/description",
"digestMultibase": {
"@id": "https://w3id.org/security#digestMultibase",
"@type": "https://w3id.org/security#multibase"
},
"digestSRI": {
"@id": "https://www.w3.org/2018/credentials#digestSRI",
"@type": "https://www.w3.org/2018/credentials#sriString"
},
"mediaType": {
"@id": "https://schema.org/encodingFormat"
},
"name": "https://schema.org/name",
"VerifiableCredential": {
"@id": "https://www.w3.org/2018/credentials#VerifiableCredential",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"confidenceMethod": {
"@id": "https://www.w3.org/2018/credentials#confidenceMethod",
"@type": "@id"
},
"credentialSchema": {
"@id": "https://www.w3.org/2018/credentials#credentialSchema",
"@type": "@id"
},
"credentialStatus": {
"@id": "https://www.w3.org/2018/credentials#credentialStatus",
"@type": "@id"
},
"credentialSubject": {
"@id": "https://www.w3.org/2018/credentials#credentialSubject",
"@type": "@id"
},
"description": "https://schema.org/description",
"evidence": {
"@id": "https://www.w3.org/2018/credentials#evidence",
"@type": "@id"
},
"issuer": {
"@id": "https://www.w3.org/2018/credentials#issuer",
"@type": "@id"
},
"name": "https://schema.org/name",
"proof": {
"@id": "https://w3id.org/security#proof",
"@type": "@id",
"@container": "@graph"
},
"refreshService": {
"@id": "https://www.w3.org/2018/credentials#refreshService",
"@type": "@id"
},
"relatedResource": {
"@id": "https://www.w3.org/2018/credentials#relatedResource",
"@type": "@id"
},
"renderMethod": {
"@id": "https://www.w3.org/2018/credentials#renderMethod",
"@type": "@id"
},
"termsOfUse": {
"@id": "https://www.w3.org/2018/credentials#termsOfUse",
"@type": "@id"
},
"validFrom": {
"@id": "https://www.w3.org/2018/credentials#validFrom",
"@type": "http://www.w3.org/2001/XMLSchema#dateTime"
},
"validUntil": {
"@id": "https://www.w3.org/2018/credentials#validUntil",
"@type": "http://www.w3.org/2001/XMLSchema#dateTime"
}
}
},
"EnvelopedVerifiableCredential": "https://www.w3.org/2018/credentials#EnvelopedVerifiableCredential",
"VerifiablePresentation": {
"@id": "https://www.w3.org/2018/credentials#VerifiablePresentation",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"holder": {
"@id": "https://www.w3.org/2018/credentials#holder",
"@type": "@id"
},
"proof": {
"@id": "https://w3id.org/security#proof",
"@type": "@id",
"@container": "@graph"
},
"termsOfUse": {
"@id": "https://www.w3.org/2018/credentials#termsOfUse",
"@type": "@id"
},
"verifiableCredential": {
"@id": "https://www.w3.org/2018/credentials#verifiableCredential",
"@type": "@id",
"@container": "@graph",
"@context": null
}
}
},
"EnvelopedVerifiablePresentation": "https://www.w3.org/2018/credentials#EnvelopedVerifiablePresentation",
"JsonSchemaCredential": "https://www.w3.org/2018/credentials#JsonSchemaCredential",
"JsonSchema": {
"@id": "https://www.w3.org/2018/credentials#JsonSchema",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"jsonSchema": {
"@id": "https://www.w3.org/2018/credentials#jsonSchema",
"@type": "@json"
}
}
},
"BitstringStatusListCredential": "https://www.w3.org/ns/credentials/status#BitstringStatusListCredential",
"BitstringStatusList": {
"@id": "https://www.w3.org/ns/credentials/status#BitstringStatusList",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"encodedList": {
"@id": "https://www.w3.org/ns/credentials/status#encodedList",
"@type": "https://w3id.org/security#multibase"
},
"statusMessage": {
"@id": "https://www.w3.org/ns/credentials/status#statusMessage",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"message": "https://www.w3.org/ns/credentials/status#message",
"status": "https://www.w3.org/ns/credentials/status#status"
}
},
"statusPurpose": "https://www.w3.org/ns/credentials/status#statusPurpose",
"statusReference": {
"@id": "https://www.w3.org/ns/credentials/status#statusReference",
"@type": "@id"
},
"statusSize": {
"@id": "https://www.w3.org/ns/credentials/status#statusSize",
"@type": "https://www.w3.org/2001/XMLSchema#positiveInteger"
},
"ttl": "https://www.w3.org/ns/credentials/status#ttl"
}
},
"BitstringStatusListEntry": {
"@id": "https://www.w3.org/ns/credentials/status#BitstringStatusListEntry",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"statusListCredential": {
"@id": "https://www.w3.org/ns/credentials/status#statusListCredential",
"@type": "@id"
},
"statusListIndex": "https://www.w3.org/ns/credentials/status#statusListIndex",
"statusPurpose": "https://www.w3.org/ns/credentials/status#statusPurpose"
}
},
"DataIntegrityProof": {
"@id": "https://w3id.org/security#DataIntegrityProof",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"challenge": "https://w3id.org/security#challenge",
"created": {
"@id": "http://purl.org/dc/terms/created",
"@type": "http://www.w3.org/2001/XMLSchema#dateTime"
},
"cryptosuite": {
"@id": "https://w3id.org/security#cryptosuite",
"@type": "https://w3id.org/security#cryptosuiteString"
},
"domain": "https://w3id.org/security#domain",
"expires": {
"@id": "https://w3id.org/security#expiration",
"@type": "http://www.w3.org/2001/XMLSchema#dateTime"
},
"nonce": "https://w3id.org/security#nonce",
"previousProof": {
"@id": "https://w3id.org/security#previousProof",
"@type": "@id"
},
"proofPurpose": {
"@id": "https://w3id.org/security#proofPurpose",
"@type": "@vocab",
"@context": {
"@protected": true,
"id": "@id",
"type": "@type",
"assertionMethod": {
"@id": "https://w3id.org/security#assertionMethod",
"@type": "@id",
"@container": "@set"
},
"authentication": {
"@id": "https://w3id.org/security#authenticationMethod",
"@type": "@id",
"@container": "@set"
},
"capabilityDelegation": {
"@id": "https://w3id.org/security#capabilityDelegationMethod",
"@type": "@id",
"@container": "@set"
},
"capabilityInvocation": {
"@id": "https://w3id.org/security#capabilityInvocationMethod",
"@type": "@id",
"@container": "@set"
},
"keyAgreement": {
"@id": "https://w3id.org/security#keyAgreementMethod",
"@type": "@id",
"@container": "@set"
}
}
},
"proofValue": {
"@id": "https://w3id.org/security#proofValue",
"@type": "https://w3id.org/security#multibase"
},
"verificationMethod": {
"@id": "https://w3id.org/security#verificationMethod",
"@type": "@id"
}
}
},
"...": {
"@id": "https://www.iana.org/assignments/jwt#..."
},
"_sd": {
"@id": "https://www.iana.org/assignments/jwt#_sd",
"@type": "@json"
},
"_sd_alg": {
"@id": "https://www.iana.org/assignments/jwt#_sd_alg"
},
"aud": {
"@id": "https://www.iana.org/assignments/jwt#aud",
"@type": "@id"
},
"cnf": {
"@id": "https://www.iana.org/assignments/jwt#cnf",
"@context": {
"@protected": true,
"kid": {
"@id": "https://www.iana.org/assignments/jwt#kid",
"@type": "@id"
},
"jwk": {
"@id": "https://www.iana.org/assignments/jwt#jwk",
"@type": "@json"
}
}
},
"exp": {
"@id": "https://www.iana.org/assignments/jwt#exp",
"@type": "https://www.w3.org/2001/XMLSchema#nonNegativeInteger"
},
"iat": {
"@id": "https://www.iana.org/assignments/jwt#iat",
"@type": "https://www.w3.org/2001/XMLSchema#nonNegativeInteger"
},
"iss": {
"@id": "https://www.iana.org/assignments/jose#iss",
"@type": "@id"
},
"jku": {
"@id": "https://www.iana.org/assignments/jose#jku",
"@type": "@id"
},
"kid": {
"@id": "https://www.iana.org/assignments/jose#kid",
"@type": "@id"
},
"nbf": {
"@id": "https://www.iana.org/assignments/jwt#nbf",
"@type": "https://www.w3.org/2001/XMLSchema#nonNegativeInteger"
},
"sub": {
"@id": "https://www.iana.org/assignments/jose#sub",
"@type": "@id"
},
"x5u": {
"@id": "https://www.iana.org/assignments/jose#x5u",
"@type": "@id"
}
}
}
19 changes: 18 additions & 1 deletion acapy_agent/vc/vc_ld/manager.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
"""Manager for performing Linked Data Proof signatures over JSON-LD formatted W3C VCs."""

from datetime import datetime, timezone
from typing import Dict, List, Optional, Type, Union, cast

from pyld import jsonld
Expand All @@ -14,6 +15,8 @@
from ...wallet.error import WalletNotFoundError
from ...wallet.key_type import BLS12381G2, ED25519, KeyType
from ..ld_proofs.constants import (
CREDENTIALS_CONTEXT_V1_URL,
CREDENTIALS_CONTEXT_V2_URL,
SECURITY_CONTEXT_BBS_URL,
SECURITY_CONTEXT_ED25519_2020_URL,
)
Expand Down Expand Up @@ -271,6 +274,12 @@ async def prepare_credential(
and SECURITY_CONTEXT_ED25519_2020_URL not in credential.context_urls
):
credential.add_context(SECURITY_CONTEXT_ED25519_2020_URL)
# Limit VCDM 2.0 with Ed25519Signature2020
elif (
options.proof_type == Ed25519Signature2018.signature_type
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Perhaps better to have options.proof_type != Ed25519Signature2020.signature_type

and credential.context_urls[0] == CREDENTIALS_CONTEXT_V2_URL
):
raise VcLdpManagerError("Invalid proof type, use Ed25519Signature2020.")

# Permit late binding of credential subject:
# IFF credential subject doesn't already have an id, add holder_did as
Expand All @@ -281,7 +290,15 @@ async def prepare_credential(
# How should this be handled?
if isinstance(subject, list):
subject = subject[0]


if (
not credential.issuance_date
and credential.context_urls[0] == CREDENTIALS_CONTEXT_V1_URL
):
credential.issuance_date = str(
datetime.now(timezone.utc).isoformat('T', 'seconds')
)

if not subject:
raise VcLdpManagerError("Credential subject is required")

Expand Down
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