secure privkey

src/utils/hooks/usePublish.tsx

@@ -3,10 +3,12 @@ import { NDKEvent, NDKKind, NDKPrivateKeySigner } from '@nostr-dev-kit/ndk';
 import { useNDK } from '@libs/ndk/provider';
 
 import { useAccount } from '@utils/hooks/useAccount';
+import { useSecureStorage } from '@utils/hooks/useSecureStorage';
 
 export function usePublish() {
   const { ndk } = useNDK();
   const { account } = useAccount();
+  const { load } = useSecureStorage();
 
   const publish = async ({
     content,
@@ -17,8 +19,10 @@ export function usePublish() {
     kind: NDKKind;
     tags: string[][];
   }): Promise<NDKEvent> => {
+    const privkey = await load(account.pubkey);
+
     const event = new NDKEvent(ndk);
-    const signer = new NDKPrivateKeySigner(account.privkey);
+    const signer = new NDKPrivateKeySigner(privkey);
 
     event.content = content;
     event.kind = kind;

src/utils/hooks/useSecureStorage.tsx

@@ -0,0 +1,43 @@
+import { appConfigDir } from '@tauri-apps/api/path';
+import { Stronghold } from 'tauri-plugin-stronghold-api';
+
+import { useStronghold } from '@stores/stronghold';
+
+const dir = await appConfigDir();
+
+export function useSecureStorage() {
+  const password = useStronghold((state) => state.password);
+
+  async function getClient(stronghold: Stronghold) {
+    try {
+      return await stronghold.loadClient('lume');
+    } catch {
+      return await stronghold.createClient('lume');
+    }
+  }
+
+  const save = async (key: string, value: string, userpass?: string) => {
+    const stronghold = await Stronghold.load(
+      `${dir}lume.stronghold`,
+      userpass ? userpass : password
+    );
+    const client = await getClient(stronghold);
+    const store = client.getStore();
+    await store.insert(key, Array.from(new TextEncoder().encode(value)));
+    return await stronghold.save();
+  };
+
+  const load = async (key: string, userpass?: string) => {
+    const stronghold = await Stronghold.load(
+      `${dir}lume.stronghold`,
+      userpass ? userpass : password
+    );
+    const client = await getClient(stronghold);
+    const store = client.getStore();
+    const value = await store.get(key);
+    const decoded = new TextDecoder().decode(new Uint8Array(value));
+    return decoded;
+  };
+
+  return { save, load };
+}