4 files changed, 8 insertions, 7 deletions

diff --git a/server/helpers/activitypub.ts b/server/helpers/activitypub.ts
index 5850fc19f..b6207c915 100644
--- a/server/helpers/activitypub.ts
+++ b/server/helpers/activitypub.ts
@@ -10,6 +10,7 @@ function activityPubContextify <T> (data: T) {
       'https://www.w3.org/ns/activitystreams',
       'https://w3id.org/security/v1',
       {
+        'RsaSignature2017': 'https://w3id.org/security#RsaSignature2017',
         'Hashtag': 'as:Hashtag',
         'uuid': 'http://schema.org/identifier',
         'category': 'http://schema.org/category',
@@ -17,8 +18,7 @@ function activityPubContextify <T> (data: T) {
         'nsfw': 'as:sensitive',
         'language': 'http://schema.org/inLanguage',
         'views': 'http://schema.org/Number',
-        'size': 'http://schema.org/Number',
-        'VideoChannel': 'https://peertu.be/ns/VideoChannel'
+        'size': 'http://schema.org/Number'
       }
     ]
   })
diff --git a/server/helpers/custom-jsonld-signature.ts b/server/helpers/custom-jsonld-signature.ts
index afb960618..e4f28018e 100644
--- a/server/helpers/custom-jsonld-signature.ts
+++ b/server/helpers/custom-jsonld-signature.ts
@@ -1,9 +1,7 @@
 import * as AsyncLRU from 'async-lru'
-import * as jsonld from 'jsonld'
+import * as jsonld from 'jsonld/'
 import * as jsig from 'jsonld-signatures'
 
-jsig.use('jsonld', jsonld)
-
 const nodeDocumentLoader = jsonld.documentLoaders.node()
 
 const lru = new AsyncLRU({
@@ -17,4 +15,6 @@ jsonld.documentLoader = (url, cb) => {
   lru.get(url, cb)
 }
 
+jsig.use('jsonld', jsonld)
+
 export { jsig }
diff --git a/server/helpers/custom-validators/activitypub/signature.ts b/server/helpers/custom-validators/activitypub/signature.ts
index 683ed2b1c..cfb65361e 100644
--- a/server/helpers/custom-validators/activitypub/signature.ts
+++ b/server/helpers/custom-validators/activitypub/signature.ts
@@ -2,7 +2,7 @@ import { exists } from '../misc'
 import { isActivityPubUrlValid } from './misc'
 
 function isSignatureTypeValid (signatureType: string) {
-  return exists(signatureType) && signatureType === 'GraphSignature2012'
+  return exists(signatureType) && signatureType === 'RsaSignature2017'
 }
 
 function isSignatureCreatorValid (signatureCreator: string) {
diff --git a/server/helpers/peertube-crypto.ts b/server/helpers/peertube-crypto.ts
index a0c9112b9..313c12e26 100644
--- a/server/helpers/peertube-crypto.ts
+++ b/server/helpers/peertube-crypto.ts
@@ -43,7 +43,8 @@ function isSignatureVerified (fromActor: ActorModel, signedDocument: object) {
 function signObject (byActor: ActorModel, data: any) {
   const options = {
     privateKeyPem: byActor.privateKey,
-    creator: byActor.url
+    creator: byActor.url,
+    algorithm: 'RsaSignature2017'
   }
 
   return jsig.promises.sign(data, options)