From 29ec9f08a7eea1f43275e7fc85db79a93b663678 Mon Sep 17 00:00:00 2001
From: Bob Mottram <bob@libreserver.org>
Date: Sun, 21 Jan 2024 10:54:32 +0000
Subject: [PATCH] Support for multikey v1 context within jsonld signature
 verification

---
 context.py  | 42 ++++++++++++++++++++++++++++++++++++++++++
 pyjsonld.py |  9 +++++++++
 2 files changed, 51 insertions(+)

diff --git a/context.py b/context.py
index eea5484f4..e24d82c63 100644
--- a/context.py
+++ b/context.py
@@ -22,6 +22,7 @@ VALID_CONTEXTS = (
     "*/socialweb/webfinger.jsonld",
     "https://www.w3.org/ns/did/v1",
     "https://w3id.org/security/multikey/v1",
+    "https://w3c.github.io/vc-data-integrity/contexts/multikey/v1.jsonld",
     "https://w3id.org/security/data-integrity/v1"
 )
 
@@ -84,6 +85,47 @@ def has_valid_context(post_json_object: {}) -> bool:
     return True
 
 
+def get_multikey_v1_schema() -> {}:
+    """ https://w3id.org/security/multikey/v1
+    https://w3c.github.io/vc-data-integrity/contexts/multikey/v1.jsonld
+    """
+    return {
+        "@context": {
+            "id": "@id",
+            "type": "@type",
+            "@protected": True,
+            "Multikey": {
+                "@id": "https://w3id.org/security#Multikey",
+                "@context": {
+                    "@protected": True,
+                    "id": "@id",
+                    "type": "@type",
+                    "controller": {
+                        "@id": "https://w3id.org/security#controller",
+                        "@type": "@id"
+                    },
+                    "revoked": {
+                        "@id": "https://w3id.org/security#revoked",
+                        "@type": "http://www.w3.org/2001/XMLSchema#dateTime"
+                    },
+                    "expires": {
+                        "@id": "https://w3id.org/security#expiration",
+                        "@type": "http://www.w3.org/2001/XMLSchema#dateTime"
+                    },
+                    "publicKeyMultibase": {
+                        "@id": "https://w3id.org/security#publicKeyMultibase",
+                        "@type": "https://w3id.org/security#multibase"
+                    },
+                    "secretKeyMultibase": {
+                        "@id": "https://w3id.org/security#secretKeyMultibase",
+                        "@type": "https://w3id.org/security#multibase"
+                    }
+                }
+            }
+        }
+    }
+
+
 def get_did_v1_schema() -> {}:
     # https://www.w3.org/ns/did/v1
     return {
diff --git a/pyjsonld.py b/pyjsonld.py
index 062d0a72a..3a02cd5b7 100644
--- a/pyjsonld.py
+++ b/pyjsonld.py
@@ -49,6 +49,7 @@ from context import get_v1security_schema
 from context import get_activitystreams_schema
 from context import get_webfinger_schema
 from context import get_did_v1_schema
+from context import get_multikey_v1_schema
 
 try:
     from functools import cmp_to_key
@@ -449,6 +450,14 @@ def load_document(url):
                 'document': get_webfinger_schema()
             }
             return doc
+        elif (url == "https://w3id.org/security/multikey/v1" or
+              url.endswith("/vc-data-integrity/contexts/multikey/v1.jsonld")):
+            doc = {
+                'contextUrl': None,
+                'documentUrl': url,
+                'document': get_multikey_v1_schema()
+            }
+            return doc
         elif url == 'https://litepub.social/litepub/context.jsonld':
             doc = {
                 'contextUrl': None,