Fill out note components

src/note.rs

@@ -1,12 +1,39 @@
 use crate::{keys::FullViewingKey, value::NoteValue, Address};
 
+/// The ZIP 212 seed randomness for a note.
+#[derive(Debug)]
+struct RandomSeed([u8; 32]);
+
+impl RandomSeed {
+    fn psi(&self) -> () {
+        todo!()
+    }
+
+    fn rcm(&self) -> () {
+        todo!()
+    }
+
+    fn esk(&self) -> () {
+        todo!()
+    }
+}
+
 /// A discrete amount of funds received by an address.
 #[derive(Debug)]
 pub struct Note {
     /// The recipient of the funds.
     recipient: Address,
     /// The value of this note.
     value: NoteValue,
+    /// A unique creation ID for this note.
+    ///
+    /// This is set to the nullifier of the note that was spent in the [`Action`] that
+    /// created this note.
+    ///
+    /// [`Action`]: crate::bundle::Action
+    rho: Nullifier,
+    /// The seed randomness for various note components.
+    rseed: RandomSeed,
 }
 
 impl Note {