Add NIP-44 decryption support to NostrConnect

CHANGELOG.md

@@ -48,6 +48,7 @@
 
 ### Changed
 
+* nostr-connect: add NIP44 decryption support ([erskingardner])
 * Bump `async-utility` to 0.3, `async-wsocket` to 0.11 and `atomic-destructor` to 0.3 ([Yuki Kishimoto])
 * nostr: remove self-tagging when building events ([Yuki Kishimoto])
 * nostr: don't set root tags when the root is null ([Yuki Kishimoto])

crates/nostr-connect/src/error.rs

@@ -7,7 +7,7 @@
 use std::convert::Infallible;
 
 use nostr::event::builder;
-use nostr::nips::{nip04, nip46};
+use nostr::nips::{nip04, nip44, nip46};
 use nostr::PublicKey;
 use thiserror::Error;
 use tokio::sync::SetError;
@@ -21,6 +21,9 @@ pub enum Error {
     /// NIP04 error
     #[error(transparent)]
     NIP04(#[from] nip04::Error),
+    /// NIP44 error
+    #[error(transparent)]
+    NIP44(#[from] nip44::Error),
     /// NIP46 error
     #[error(transparent)]
     NIP46(#[from] nip46::Error),

crates/nostr-connect/src/signer.rs

@@ -163,11 +163,22 @@ impl NostrConnectRemoteSigner {
             .handle_notifications(|notification| async {
                 if let RelayPoolNotification::Event { event, .. } = notification {
                     if event.kind == Kind::NostrConnect {
-                        if let Ok(msg) = nip04::decrypt(
-                            self.keys.signer.secret_key(),
-                            &event.pubkey,
-                            event.content,
-                        ) {
+                        let decrypted_msg = if event.content.contains("?iv=") {
+                            nip04::decrypt(
+                                self.keys.signer.secret_key(),
+                                &event.pubkey,
+                                event.content.as_str(),
+                            )
+                            .map_err(Error::from)
+                        } else {
+                            nip44::decrypt(
+                                self.keys.signer.secret_key(),
+                                &event.pubkey,
+                                event.content.as_str(),
+                            )
+                            .map_err(Error::from)
+                        };
+                        if let Ok(msg) = decrypted_msg {
                             tracing::debug!("New Nostr Connect message received: {msg}");
 
                             let msg: Message = Message::from_json(msg)?;