feat(MultiSign): register context before issuance

.gitignore

@@ -22,6 +22,8 @@ dist/*
 build/*
 node_modules/*
 
+!data/context
+
 requirements.txt
 .idea/*
 *.ini*

cert_issuer/normalization_handler.py

@@ -1,8 +1,15 @@
-from cert_schema import normalize_jsonld
+import json
+import os
+from cert_schema import normalize_jsonld, extend_preloaded_context
+
+BASE_DIR = os.path.abspath(os.path.dirname(__file__))
 
 
 class JSONLDHandler:
     @staticmethod
     def normalize_to_utf8(certificate_json):
+        with open(os.path.join(BASE_DIR, '../data/context/ed25519.v1.json')) as context_file:
+            context_data = json.load(context_file)
+            extend_preloaded_context('https://w3id.org/security/suites/ed25519-2020/v1', context_data)
         normalized = normalize_jsonld(certificate_json, detect_unmapped_fields=False)
         return normalized.encode('utf-8')

data/context/ed25519.v1.json

@@ -0,0 +1,93 @@
+{
+  "@context": {
+    "id": "@id",
+    "type": "@type",
+    "@protected": true,
+    "proof": {
+      "@id": "https://w3id.org/security#proof",
+      "@type": "@id",
+      "@container": "@graph"
+    },
+    "Ed25519VerificationKey2020": {
+      "@id": "https://w3id.org/security#Ed25519VerificationKey2020",
+      "@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"
+        },
+        "publicKeyMultibase": {
+          "@id": "https://w3id.org/security#publicKeyMultibase",
+          "@type": "https://w3id.org/security#multibase"
+        }
+      }
+    },
+    "Ed25519Signature2020": {
+      "@id": "https://w3id.org/security#Ed25519Signature2020",
+      "@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"
+        },
+        "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",
+        "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"
+            },
+            "capabilityInvocation": {
+              "@id": "https://w3id.org/security#capabilityInvocationMethod",
+              "@type": "@id",
+              "@container": "@set"
+            },
+            "capabilityDelegation": {
+              "@id": "https://w3id.org/security#capabilityDelegationMethod",
+              "@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"
+        }
+      }
+    }
+  }
+}