add nip-26 support

README.md

@@ -14,6 +14,7 @@ async window.nostr.signEvent(event): Event // returns the full event object sign
 async window.nostr.getRelays(): { [url: string]: RelayPolicy } // returns a map of relays
 async window.nostr.nip04.encrypt(pubkey, plaintext): string // returns ciphertext+iv as specified in nip04
 async window.nostr.nip04.decrypt(pubkey, ciphertext): string // takes ciphertext+iv as specified in nip04
+async window.nostr.nip26.delegate(delegateePubkey, cond): object // generates a delegation token ({from, to, cond, sig})
 ```
 
 This extension is Chromium-only. For a maintained Firefox fork, see [nos2x-fox](https://diegogurpegui.com/nos2x-fox/).

extension/background.js

@@ -6,7 +6,7 @@ import {
   getPublicKey,
   nip19
 } from 'nostr-tools'
-import {nip04} from 'nostr-tools'
+import {nip04, nip26} from 'nostr-tools'
 import {Mutex} from 'async-mutex'
 
 import {
@@ -142,6 +142,11 @@ async function handleContentScriptMessage({type, params, host}) {
         let {peer, ciphertext} = params
         return decrypt(sk, peer, ciphertext)
       }
+      case 'nip26.delegate': {
+        let { delegateePubkey, conditionsJson } = params
+        let parameters = { pubkey: delegateePubkey, ...conditionsJson }
+        return nip26.createDelegation(sk, parameters)
+      }
     }
   } catch (error) {
     return {error: {message: error.message, stack: error.stack}}

extension/common.js

@@ -8,14 +8,16 @@ export const PERMISSIONS_REQUIRED = {
   getPublicKey: 1,
   getRelays: 5,
   signEvent: 10,
+  'nip26.delegate': 10,
   'nip04.encrypt': 20,
-  'nip04.decrypt': 20
+  'nip04.decrypt': 20,
 }
 
 const ORDERED_PERMISSIONS = [
   [1, ['getPublicKey']],
   [5, ['getRelays']],
   [10, ['signEvent']],
+  [10, ['nip26.delegate']],
   [20, ['nip04.encrypt']],
   [20, ['nip04.decrypt']]
 ]
@@ -25,7 +27,8 @@ const PERMISSION_NAMES = {
   getRelays: 'read your list of preferred relays',
   signEvent: 'sign events using your private key',
   'nip04.encrypt': 'encrypt messages to peers',
-  'nip04.decrypt': 'decrypt messages from peers'
+  'nip04.decrypt': 'decrypt messages from peers',
+  'nip26.delegate': 'create key delegation tokens',
 }
 
 export function getAllowedCapabilities(permission) {

extension/nostr-provider.js

@@ -26,6 +26,12 @@ window.nostr = {
     }
   },
 
+  nip26: {
+    async delegate(delegateePubkey, conditionsJson) {
+      return window.nostr._call('nip26.delegate', {delegateePubkey, conditionsJson})
+    }
+  },
+
   _call(type, params) {
     return new Promise((resolve, reject) => {
       let id = Math.random().toString().slice(4)