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pyvckit #1

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cayop merged 17 commits from pyvckit into release 2024-06-11 15:10:32 +00:00
Conversation 0 Commits 17 Files Changed 25 +399 -574
25 changed files with 399 additions and 574 deletions
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12
README.md
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@ -31,23 +31,19 @@ The application's backend is responsible for issuing credentials upun user reque
python -m venv venv
source venv/bin/activate
```
3. Install the DIDKit wheel
```
wget https://gitea.pangea.org/trustchain-oc1-orchestral/ssikit_trustchain/raw/branch/master/didkit-0.3.2-cp311-cp311-manylinux_2_34_x86_64.whl
```
4. Install the required packages:
3. Install the required packages:
```
pip install -r requirements.txt
```
5. Run migrations:
4. Run migrations:
```
python manage.py migrate
```
6. Optionally you can install a minumum data set:
5. Optionally you can install a minumum data set:
```
python manage.py initial_datas
```
7. Start the development server:
6. Start the development server:
```
python manage.py runserver
```

1
cache_context.json Normal file
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File diff suppressed because one or more lines are too long

9
context/base.jsonld Normal file
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@ -0,0 +1,9 @@
{
"@context": {
"credentialSchema": "https://idhub.pangea.org/context/#credentialSchema",
"value": "https://idhub.pangea.org/context/#value",
"lang": "https://idhub.pangea.org/context/#lang",
"description": "https://idhub.pangea.org/context/#description",
"name": "https://idhub.pangea.org/context/#name"
}
}

22
context/course-credential.jsonld Normal file
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@ -0,0 +1,22 @@
{
"@context": {
"firstName": "https://idhub.pangea.org/context/#firstName",
"lastName": "https://idhub.pangea.org/context/#lastName",
"personalIdentifier": "https://idhub.pangea.org/context/#personalIdentifier",
"issuedDate": "https://idhub.pangea.org/context/#issuedDate",
"modeOfInstruction": "https://idhub.pangea.org/context/#modeOfInstruction",
"courseDuration": "https://idhub.pangea.org/context/#courseDuration",
"courseDays": "https://idhub.pangea.org/context/#courseDays",
"courseName": "https://idhub.pangea.org/context/#courseName",
"courseDescription": "https://idhub.pangea.org/context/#courseDescription",
"gradingScheme": "https://idhub.pangea.org/context/#gradingScheme",
"scoreAwarded": "https://idhub.pangea.org/context/#scoreAwarded",
"qualificationAwarded": "https://idhub.pangea.org/context/#qualificationAwarded",
"courseLevel": "https://idhub.pangea.org/context/#courseLevel",
"courseFramework": "https://idhub.pangea.org/context/#courseFramework",
"courseCredits": "https://idhub.pangea.org/context/#courseCredits",
"dateOfAssessment": "https://idhub.pangea.org/context/#dateOfAssessment",
"evidenceAssessment": "https://idhub.pangea.org/context/#evidenceAssessment",
"email": "https://idhub.pangea.org/context/#email"
}
}

11
context/e-operator-claim.jsonld Normal file
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@ -0,0 +1,11 @@
{
"@context": {
"legalName": "https://idhub.pangea.org/context/#legalName",
"accreditedBy": "https://idhub.pangea.org/context/#accreditedBy",
"operatorNumber": "https://idhub.pangea.org/context/#operatorNumber",
"limitJurisdiction": "https://idhub.pangea.org/context/#limitJurisdiction",
"accreditedFor": "https://idhub.pangea.org/context/#accreditedFor",
"role": "https://idhub.pangea.org/context/#role",
"email": "https://idhub.pangea.org/context/#email"
}
}

22
context/federation-membership.jsonld Normal file
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@ -0,0 +1,22 @@
{
"@context": {
"federation": "https://idhub.pangea.org/context/#federation",
"legalName": "https://idhub.pangea.org/context/#legalName",
"shortName": "https://idhub.pangea.org/context/#shortName",
"registrationIdentifier": "https://idhub.pangea.org/context/#registrationIdentifier",
"publicRegistry": "https://idhub.pangea.org/context/#publicRegistry",
"streetAddress": "https://idhub.pangea.org/context/#streetAddress",
"postCode": "https://idhub.pangea.org/context/#postCode",
"city": "https://idhub.pangea.org/context/#city",
"taxReference": "https://idhub.pangea.org/context/#taxReference",
"membershipType": "https://idhub.pangea.org/context/#membershipType",
"membershipStatus": "https://idhub.pangea.org/context/#membershipStatus",
"membershipId": "https://idhub.pangea.org/context/#membershipId",
"membershipSince": "https://idhub.pangea.org/context/#membershipSince",
"email": "https://idhub.pangea.org/context/#email",
"phone": "https://idhub.pangea.org/context/#phone",
"website": "https://idhub.pangea.org/context/#website",
"evidence": "https://idhub.pangea.org/context/#evidence",
"certificationDate": "https://idhub.pangea.org/context/#certificationDate"
}
}

17
context/financial-vulnerability.jsonld Normal file
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@ -0,0 +1,17 @@
{
"@context": {
"firstName": "https://idhub.pangea.org/context/#firstName",
"lastName": "https://idhub.pangea.org/context/#lastName",
"email": "https://idhub.pangea.org/context/#email",
"phoneNumber": "https://idhub.pangea.org/context/#phoneNumber",
"identityDocType": "https://idhub.pangea.org/context/#identityDocType",
"identityNumber": "https://idhub.pangea.org/context/#identityNumber",
"streetAddress": "https://idhub.pangea.org/context/#streetAddress",
"socialWorkerName": "https://idhub.pangea.org/context/#socialWorkerName",
"socialWorkerSurname": "https://idhub.pangea.org/context/#socialWorkerSurname",
"financialVulnerabilityScore": "https://idhub.pangea.org/context/#financialVulnerabilityScore",
"amountCoveredByOtherAids": "https://idhub.pangea.org/context/#amountCoveredByOtherAids",
"connectivityOptionList": "https://idhub.pangea.org/context/#connectivityOptionList",
"assessmentDate": "https://idhub.pangea.org/context/#assessmentDate"
}
}

15
context/membership-card.jsonld Normal file
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@ -0,0 +1,15 @@
{
"@context": {
"firstName": "https://idhub.pangea.org/context/#firstName",
"lastName": "https://idhub.pangea.org/context/#lastName",
"email": "https://idhub.pangea.org/context/#email",
"organisation": "https://idhub.pangea.org/context/#organisation",
"membershipType": "https://idhub.pangea.org/context/#membershipType",
"membershipId": "https://idhub.pangea.org/context/#membershipId",
"affiliatedSince": "https://idhub.pangea.org/context/#iaffiliatedSince",
"affiliatedUntil": "https://idhub.pangea.org/context/#affiliatedUntil",
"typeOfPerson": "https://idhub.pangea.org/context/#typeOfPerson",
"identityDocType": "https://idhub.pangea.org/context/#identityDocType",
"identityNumber": "https://idhub.pangea.org/context/#identityNumber"
}
}

47
idhub/models.py
View File

@ -6,16 +6,17 @@ import datetime
from collections import OrderedDict
from django.db import models
from django.conf import settings
from django.urls import reverse
from django.template.loader import get_template
from django.utils.translation import gettext_lazy as _
from utils.idhub_ssikit import (
generate_did_controller_key,
keydid_from_controller_key,
sign_credential,
webdid_from_controller_key,
verify_credential,
from pyvckit.did import (
generate_keys,
generate_did,
gen_did_document,
)
from pyvckit.sign import sign
from pyvckit.verify import verify_vc
from oidc4vp.models import Organization
from idhub_auth.models import User
@ -469,15 +470,22 @@ class DID(models.Model):
self.key_material = user.encrypt_data(value)
def set_did(self):
new_key_material = generate_did_controller_key()
new_key_material = generate_keys()
self.set_key_material(new_key_material)
if self.type == self.Types.KEY:
self.did = keydid_from_controller_key(new_key_material)
self.did = generate_did(new_key_material)
elif self.type == self.Types.WEB:
didurl, document = webdid_from_controller_key(new_key_material, settings.DOMAIN)
self.did = didurl
self.didweb_document = document
url = "https://{}".format(settings.DOMAIN)
path = reverse("idhub:serve_did", args=["a"])
if path:
path = path.split("/a/did.json")[0]
url = "https://{}/{}".format(settings.DOMAIN, path)
self.did = generate_did(new_key_material, url)
key = json.loads(new_key_material)
url, self.didweb_document = gen_did_document(self.did, key)
def get_key(self):
return json.loads(self.key_material)
@ -681,15 +689,18 @@ class VerificableCredential(models.Model):
# hash of credential without sign
self.hash = hashlib.sha3_256(self.render(domain).encode()).hexdigest()
data = sign_credential(
self.render(domain),
self.issuer_did.get_key_material()
)
valid, reason = verify_credential(data)
key = self.issuer_did.get_key_material()
credential = self.render(domain)
vc = sign(credential, key, self.issuer_did.did)
vc_str = json.dumps(vc)
valid = verify_vc(vc_str)
if not valid:
return
self.data = self.user.encrypt_data(data)
self.data = self.user.encrypt_data(vc_str)
self.status = self.Status.ISSUED

6
idhub/templates/credentials/course-credential.json
View File

@ -1,8 +1,8 @@
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://idhub.pangea.org/credentials/base/v1",
"https://idhub.pangea.org/credentials/course-credential/v1"
"https://idhub.pangea.org/context/base.jsonld",
"https://idhub.pangea.org/context/course-credential.jsonld"
],
"id": "{{ vc_id }}",
"type": [
@ -67,5 +67,5 @@
"id": "https://idhub.pangea.org/vc_schemas/course-credential.json",
"type": "FullJsonSchemaValidator2021"
}
}
}

6
idhub/templates/credentials/e-operator-claim.json
View File

@ -1,8 +1,8 @@
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://idhub.pangea.org/credentials/base/v1",
"https://idhub.pangea.org/credentials/e-operator-claim/v1"
"https://idhub.pangea.org/context/base.jsonld",
"https://idhub.pangea.org/context/e-operator-claim.jsonld"
],
"id": "{{ vc_id }}",
"type": [
@ -64,4 +64,4 @@
"id": "https://idhub.pangea.org/vc_schemas/federation-membership.json",
"type": "FullJsonSchemaValidator2021"
}
}
}

6
idhub/templates/credentials/federation-membership.json
View File

@ -1,8 +1,8 @@
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://idhub.pangea.org/credentials/base/v1",
"https://idhub.pangea.org/credentials/federation-membership/v1"
"https://idhub.pangea.org/context/base.jsonld",
"https://idhub.pangea.org/context/federation-membership.jsonld"
],
"id": "{{ vc_id }}",
"type": [
@ -75,4 +75,4 @@
"id": "https://idhub.pangea.org/vc_schemas/federation-membership.json",
"type": "FullJsonSchemaValidator2021"
}
}
}

4
idhub/templates/credentials/financial-vulnerability.json
View File

@ -1,8 +1,8 @@
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://idhub.pangea.org/credentials/base/v1",
"https://idhub.pangea.org/credentials/financial-vulnerability/v1"
"https://idhub.pangea.org/context/base.jsonld",
"https://idhub.pangea.org/context/financial-vulnerability.jsonld"
],
"id": "{{ vc_id }}",
"type": [

4
idhub/templates/credentials/membership-card.json
View File

@ -1,8 +1,8 @@
{
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://idhub.pangea.org/credentials/base/v1",
"https://idhub.pangea.org/credentials/membership-card/v1"
"https://idhub.pangea.org/context/base.jsonld",
"https://idhub.pangea.org/context/membership-card.jsonld"
],
"type": [
"VerifiableCredential",

4
idhub/urls.py
View File

@ -21,7 +21,7 @@ from .views import (
LoginView,
PasswordResetView,
PasswordResetConfirmView,
serve_did,
ServeDidView,
DobleFactorSendView,
)
from .admin import views as views_admin
@ -183,7 +183,7 @@ urlpatterns = [
name='admin_2fauth'),
path('admin/auth/2f/', DobleFactorSendView.as_view(), name='confirm_send_2f'),
path('did-registry/<str:did_id>/did.json', serve_did)
path('did-registry/<str:did_id>/did.json', ServeDidView, name="serve_did")
# path('verification_portal/verify/', views_verification_portal.verify,
# name="verification_portal_verify")

2
idhub/views.py
View File

@ -90,7 +90,7 @@ class PasswordResetView(auth_views.PasswordResetView):
return HttpResponseRedirect(self.success_url)
def serve_did(request, did_id):
def ServeDidView(request, did_id):
domain = settings.DOMAIN
id_did = f'did:web:{domain}:did-registry:{did_id}'
did = get_object_or_404(DID, did=id_did)

15
oidc4vp/forms.py
View File

@ -1,11 +1,12 @@
import json
import uuid
from django import forms
from django.template.loader import get_template
from django.utils.translation import gettext_lazy as _
from django.core.exceptions import ValidationError
from utils.idhub_ssikit import create_verifiable_presentation
from pyvckit.sign import sign
from idhub.models import VerificableCredential
@ -72,13 +73,19 @@ class AuthorizeForm(forms.Form):
def get_verificable_presentation(self):
did = self.subject_did
vc_list = [json.loads(x) for x in self.list_credentials]
vp_template = get_template('credentials/verifiable_presentation.json')
vc_list = json.dumps([json.loads(x) for x in self.list_credentials])
context = {
"holder_did": did.did,
"verifiable_credential_list": vc_list
"id": str(uuid.uuid4())
}
unsigned_vp = vp_template.render(context)
vp = json.loads(unsigned_vp)
vp["verifiableCredential"] = vc_list
vp_str = json.dumps(vp)
key_material = did.get_key_material()
self.vp = create_verifiable_presentation(key_material, unsigned_vp)
vp = sign(vp_str, key_material, did.did)
self.vp = json.dumps(vp)

7
oidc4vp/models.py
View File

@ -12,7 +12,7 @@ from django.http import QueryDict
from django.utils.translation import gettext_lazy as _
from idhub_auth.models import User
from django.db import models
from utils.idhub_ssikit import verify_presentation
from pyvckit.verify import verify_vp
SALT_CHARS = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
@ -271,7 +271,7 @@ class OAuth2VPToken(models.Model):
return self.authorization.code
def verifing(self):
self.result_verify = verify_presentation(self.vp_token)
self.result_verify = verify_vp(self.vp_token)
def get_result_verify(self):
if not self.result_verify:
@ -284,8 +284,7 @@ class OAuth2VPToken(models.Model):
"redirect_uri": "",
"response": "",
}
verification = json.loads(self.result_verify)
if verification.get('errors') or verification.get('warnings'):
if not self.result_verify:
response["verify"] = "Error, {}".format(_("Failed verification"))
return response

4
oidc4vp/templates/credentials/verifiable_presentation.json
View File

@ -2,10 +2,10 @@
"@context": [
"https://www.w3.org/2018/credentials/v1"
],
"id": "http://example.org/presentations/3731",
"id": "{{ id }}",
"type": [
"VerifiablePresentation"
],
"holder": "{{ holder_did }}",
"verifiableCredential": {{ verifiable_credential_list|safe }}
"verifiableCredential": ""
}

6
oidc4vp/views.py
View File

@ -174,11 +174,7 @@ class VerifyView(View):
"""
Send a email when a user is activated.
"""
verification = self.vp_token.get_result_verify()
if not verification:
return
if verification.get('errors') or verification.get('warnings'):
if not self.vp_token.result_verify:
return
email = self.get_email(user)

9
promotion/forms.py
View File

@ -1,14 +1,6 @@
import json
import requests
from django import forms
from django.conf import settings
from django.template.loader import get_template
from django.utils.translation import gettext_lazy as _
from django.core.exceptions import ValidationError
from utils.idhub_ssikit import create_verifiable_presentation
from oidc4vp.models import Organization, Authorization
from promotion.models import Promotion
@ -66,4 +58,3 @@ class ContractForm(forms.Form):
birthday = forms.CharField()
gen = forms.CharField()
lang = forms.CharField()

2
requirements.txt
View File

@ -30,7 +30,7 @@ weasyprint==60.2
ujson==5.9.0
openpyxl==3.1.2
jsonpath_ng==1.6.1
./didkit-0.3.2-cp311-cp311-manylinux_2_34_x86_64.whl
pyroaring==0.4.5
coverage==7.4.3
gunicorn==21.2.0
pyvckit

73
utils/idhub_ssikit/README.md
View File

@ -1,73 +0,0 @@
# Helper routines to manage DIDs/VC/VPs
This module is a wrapper around the functions exported by SpruceID's `DIDKit` framework.
## DID generation and storage
For now DIDs are of the kind `did:key`, with planned support for `did:web` in the near future.
Creation of a DID involves two steps:
* Generate a unique DID controller key
* Derive a `did:key` type from the key
Both must be stored in the IdHub database and linked to a `User` for later retrieval.
```python
# Use case: generate and link a new DID for an existing user
user = request.user # ...
controller_key = idhub_ssikit.generate_did_controller_key()
did_string = idhub_ssikit.keydid_from_controller_key(controller_key)
did = idhub.models.DID(
did = did_string,
user = user
)
did_controller_key = idhub.models.DIDControllerKey(
key_material = controller_key,
owner_did = did
)
did.save()
did_controller_key.save()
```
## Verifiable Credential issuance
Verifiable Credential templates are stored as Jinja2 (TBD) templates in `/schemas` folder. Please examine each template to see what data must be passed to it in order to render.
The data passed to the template must at a minimum include:
* issuer_did
* subject_did
* vc_id
For example, in order to render `/schemas/member-credential.json`:
```python
from jinja2 import Environment, FileSystemLoader, select_autoescape
import idhub_ssikit
env = Environment(
loader=FileSystemLoader("vc_templates"),
autoescape=select_autoescape()
)
unsigned_vc_template = env.get_template("member-credential.json")
issuer_user = request.user
issuer_did = user.dids[0] # TODO: Django ORM pseudocode
issuer_did_controller_key = did.keys[0] # TODO: Django ORM pseudocode
data = {
"vc_id": "http://pangea.org/credentials/3731",
"issuer_did": issuer_did,
"subject_did": "did:web:[...]",
"issuance_date": "2020-08-19T21:41:50Z",
"subject_is_member_of": "Pangea"
}
signed_credential = idhub_ssikit.render_and_sign_credential(
unsigned_vc_template,
issuer_did_controller_key,
data
)
```

15
utils/idhub_ssikit/TENANT_CFG_TEMPLATE
View File

@ -1,15 +0,0 @@
{
"issuerApiUrl": "http://localhost:8080/issuer-api/default",
"issuerClientName": "PANGEA Issuer Portal",
"issuerDid": null,
"issuerUiUrl": "http://localhost:5000",
"wallets": {
"walt.id": {
"description": "walt.id web wallet",
"id": "walt.id",
"presentPath": "api/siop/initiatePresentation",
"receivePath": "api/siop/initiateIssuance",
"url": "http://localhost:3000"
}
}
}

184
utils/idhub_ssikit/__init__.py
View File

@ -1,184 +0,0 @@
import asyncio
import base64
import datetime
import zlib
from ast import literal_eval
import didkit
import json
import urllib
import jinja2
from django.template.backends.django import Template
from django.template.loader import get_template
from pyroaring import BitMap
from trustchain_idhub import settings
def generate_did_controller_key():
return didkit.generate_ed25519_key()
def keydid_from_controller_key(key):
return didkit.key_to_did("key", key)
def resolve_did(keydid):
async def inner():
return await didkit.resolve_did(keydid, "{}")
return asyncio.run(inner())
def webdid_from_controller_key(key, domain):
"""
Se siguen los pasos para generar un webdid a partir de un keydid.
Documentado en la docu de spruceid.
"""
keydid = keydid_from_controller_key(key) # "did:key:<...>"
pubkeyid = keydid.rsplit(":")[-1] # <...>
document = json.loads(resolve_did(keydid)) # Documento DID en terminos "key"
# domain = urllib.parse.urlencode({"domain": settings.DOMAIN})[7:]
webdid_url = f"did:web:{domain}:did-registry:{pubkeyid}" # nueva URL: "did:web:idhub.pangea.org:<...>"
webdid_url_owner = webdid_url + "#owner"
# Reemplazamos los campos del documento DID necesarios:
document["id"] = webdid_url
document["verificationMethod"][0]["id"] = webdid_url_owner
document["verificationMethod"][0]["controller"] = webdid_url
document["authentication"][0] = webdid_url_owner
document["assertionMethod"][0] = webdid_url_owner
document_fixed_serialized = json.dumps(document)
return webdid_url, document_fixed_serialized
def generate_generic_vc_id():
# TODO agree on a system for Verifiable Credential IDs
return "https://pangea.org/credentials/42"
def render_and_sign_credential(vc_template: jinja2.Template, jwk_issuer, vc_data: dict[str, str]):
"""
Populates a VC template with data for issuance, and signs the result with the provided key.
The `vc_data` parameter must at a minimum include:
* issuer_did
* subject_did
* vc_id
and must include whatever other fields are relevant for the vc_template to be instantiated.
The following field(s) will be auto-generated if not passed in `vc_data`:
* issuance_date (to `datetime.datetime.now()`)
"""
async def inner():
unsigned_vc = vc_template.render(vc_data)
signed_vc = await didkit.issue_credential(
unsigned_vc,
'{"proofFormat": "ldp"}',
jwk_issuer
)
return signed_vc
if vc_data.get("issuance_date") is None:
vc_data["issuance_date"] = datetime.datetime.now().replace(microsecond=0).isoformat()
return asyncio.run(inner())
def sign_credential(unsigned_vc: str, jwk_issuer):
"""
Signs the unsigned credential with the provided key.
The credential template must be rendered with all user data.
"""
async def inner():
signed_vc = await didkit.issue_credential(
unsigned_vc,
'{"proofFormat": "ldp"}',
jwk_issuer
)
return signed_vc
return asyncio.run(inner())
def verify_credential(vc):
"""
Returns a (bool, str) tuple indicating whether the credential is valid.
If the boolean is true, the credential is valid and the second argument can be ignored.
If it is false, the VC is invalid and the second argument contains a JSON object with further information.
"""
async def inner():
str_res = await didkit.verify_credential(vc, '{"proofFormat": "ldp"}')
res = literal_eval(str_res)
ok = res["warnings"] == [] and res["errors"] == []
return ok, str_res
valid, reason = asyncio.run(inner())
if not valid:
return valid, reason
# Credential passes basic signature verification. Now check it against its schema.
# TODO: check agasint schema
# pass
# Credential verifies against its schema. Now check revocation status.
vc = json.loads(vc)
if "credentialStatus" in vc:
revocation_index = int(vc["credentialStatus"]["revocationBitmapIndex"]) # NOTE: THIS FIELD SHOULD BE SERIALIZED AS AN INTEGER, BUT IOTA DOCUMENTAITON SERIALIZES IT AS A STRING. DEFENSIVE CAST ADDED JUST IN CASE.
vc_issuer = vc["issuer"]["id"] # This is a DID
if vc_issuer[:7] == "did:web": # Only DID:WEB can revoke
issuer_did_document = json.loads(resolve_did(vc_issuer)) # TODO: implement a caching layer so we don't have to fetch the DID (and thus the revocation list) every time a VC is validated.
issuer_revocation_list = issuer_did_document["service"][0]
assert issuer_revocation_list["type"] == "RevocationBitmap2022"
revocation_bitmap = BitMap.deserialize(
zlib.decompress(
base64.b64decode(
issuer_revocation_list["serviceEndpoint"].rsplit(",")[1].encode('utf-8')
)
)
)
if revocation_index in revocation_bitmap:
return False, "Credential has been revoked by the issuer"
# Fallthrough means all is good.
return True, "Credential passes all checks"
def issue_verifiable_presentation(vp_template: Template, vc_list: list[str], jwk_holder: str, holder_did: str) -> str:
async def inner():
unsigned_vp = vp_template.render(data)
signed_vp = await didkit.issue_presentation(
unsigned_vp,
'{"proofFormat": "ldp"}',
jwk_holder
)
return signed_vp
data = {
"holder_did": holder_did,
"verifiable_credential_list": "[" + ",".join(vc_list) + "]"
}
return asyncio.run(inner())
def create_verifiable_presentation(jwk_holder: str, unsigned_vp: str) -> str:
async def inner():
signed_vp = await didkit.issue_presentation(
unsigned_vp,
'{"proofFormat": "ldp"}',
jwk_holder
)
return signed_vp
return asyncio.run(inner())
def verify_presentation(vp):
"""
Returns a (bool, str) tuple indicating whether the credential is valid.
If the boolean is true, the credential is valid and the second argument can be ignored.
If it is false, the VC is invalid and the second argument contains a JSON object with further information.
"""
async def inner():
proof_options = '{"proofFormat": "ldp"}'
return await didkit.verify_presentation(vp, proof_options)
return asyncio.run(inner())