generate keypair and display nsec.

src/main/scala/Components.scala

@@ -80,6 +80,7 @@ object Components {
     div(
       cls := "text-md",
       sk.map { k => entry("private key (hex)", k.value.toHex) },
+      sk.map { k => entry("nsec", NIP19.encode(k)) },
       entry("public key (hex)", pp.pubkey.value.toHex),
       if pp.relays.size > 0 then
         Some(entry("relay hints", pp.relays.reduce((a, b) => s"$a, $b")))

src/main/scala/Main.scala

@@ -63,6 +63,15 @@ object Main extends IOWebApp {
               .printWith(jsonPrinter)
           )
         ))
+      ),
+      button(
+        Styles.button,
+        "generate keypair",
+        onClick --> (_.foreach(_ =>
+          store.input.set(
+            NIP19.encode(PrivateKey(randomBytes32()))
+          )
+        ))
       )
     )