Infraestructura para usar didweb

idhub/admin/views.py

@@ -645,7 +645,7 @@ class DidRegisterView(Credentials, CreateView):
 
     def form_valid(self, form):
         form.instance.user = self.request.user
-        form.instance.set_did()
+        form.instance.set_did(form.instance.type)
         form.save()
         messages.success(self.request, _('DID created successfully'))
         Event.set_EV_ORG_DID_CREATED_BY_ADMIN(form.instance)

idhub/models.py

@@ -8,7 +8,7 @@ from django.utils.translation import gettext_lazy as _
 from utils.idhub_ssikit import (
     generate_did_controller_key,
     keydid_from_controller_key,
-    sign_credential,
+    sign_credential, webdid_from_controller_key,
 )
 from idhub_auth.models import User
 
@@ -416,6 +416,7 @@ class DID(models.Model):
         related_name='dids',
         null=True,
     )
+    didweb_document = models.TextField()
 
     @property
     def is_organization_did(self):
@@ -423,9 +424,14 @@ class DID(models.Model):
             return True
         return False
 
-    def set_did(self):
+    def set_did(self, type):
         self.key_material = generate_did_controller_key()
+        if type == "key":
             self.did = keydid_from_controller_key(self.key_material)
+        elif type == "web":
+            didurl, document = webdid_from_controller_key(self.key_material)
+            self.did = didurl
+            self.didweb_document = document
 
     def get_key(self):
         return json.loads(self.key_material)

idhub/urls.py

@@ -17,7 +17,7 @@ Including another URLconf
 from django.contrib.auth import views as auth_views
 from django.views.generic import RedirectView
 from django.urls import path, reverse_lazy
-from .views import LoginView
+from .views import LoginView, serve_did
 from .admin import views as views_admin
 from .user import views as views_user
 # from .verification_portal import views as views_verification_portal
@@ -173,6 +173,8 @@ urlpatterns = [
     path('admin/import/new', views_admin.ImportAddView.as_view(),
         name='admin_import_add'),
 
+    path('did-registry/<str:did_id>', serve_did)
+
     # path('verification_portal/verify/', views_verification_portal.verify,
     #      name="verification_portal_verify")
 ]

idhub/user/views.py

@@ -205,7 +205,7 @@ class DidRegisterView(MyWallet, CreateView):
 
     def form_valid(self, form):
         form.instance.user = self.request.user
-        form.instance.set_did()
+        form.instance.set_did(form.instance.type)
         form.save()
         messages.success(self.request, _('DID created successfully'))
 

idhub/views.py

@@ -1,8 +1,12 @@
+from django.shortcuts import get_object_or_404
 from django.urls import reverse_lazy
 from django.utils.translation import gettext_lazy as _
 from django.contrib.auth import views as auth_views
 from django.contrib.auth import login as auth_login
-from django.http import HttpResponseRedirect
+from django.http import HttpResponseRedirect, HttpResponse
+
+from idhub.models import DID
+from trustchain_idhub import settings
 
 
 class LoginView(auth_views.LoginView):
@@ -26,3 +30,10 @@ class LoginView(auth_views.LoginView):
             self.extra_context['success_url'] = admin_dashboard
         auth_login(self.request, user)
         return HttpResponseRedirect(self.extra_context['success_url'])
+
+
+def serve_did(request, did_id):
+    document = get_object_or_404(DID, did=f'did:web:{settings.DOMAIN}:{did_id}').didweb_document
+    retval = HttpResponse(document)
+    retval.headers["Content-Type"] = "application/json"
+    return retval

utils/idhub_ssikit/__init__.py

@@ -6,6 +6,8 @@ import jinja2
 from django.template.backends.django import Template
 from django.template.loader import get_template
 
+from trustchain_idhub import settings
+
 
 def generate_did_controller_key():
     return didkit.generate_ed25519_key()
@@ -15,6 +17,30 @@ def keydid_from_controller_key(key):
     return didkit.key_to_did("key", key)
 
 
+async def resolve_keydid(keydid):
+    return await didkit.resolve_did(keydid, "{}")
+
+
+def webdid_from_controller_key(key):
+    """
+    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(asyncio.run(resolve_keydid(keydid)))  # Documento DID en terminos "key"
+    webdid_url = f"did:web:{settings.DOMAIN}:{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"]["id"] = webdid_url_owner
+    document["verificationMethod"]["controller"] = webdid_url
+    document["authentication"] = webdid_url_owner
+    document["assertionMethod"] = 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"