fixup! SFT-UNKN: Add foundation-bip32 crate.

Foundation-Devices · Nov 13, 2023 · ffd0ae6 · ffd0ae6
1 parent 70099e3
commit ffd0ae6
Showing 1 changed file with 14 additions and 4 deletions.
diff --git a/bip32/src/parser.rs b/bip32/src/parser.rs
@@ -91,10 +91,9 @@ where
     Error: ParseError<Input>,
     Error: FromExternalError<Input, secp256k1::Error>,
 {
-    let depth = u8::<Input, Error>;
-    let parent_fingerprint = fingerprint::<Input, Error>;
-    let child_number = be_u32::<Input, Error>;
-    let chain_code = map(take::<_, Input, Error>(32usize), to_fixed_bytes::<_, 32>);
+    let depth = u8;
+    let parent_fingerprint = fingerprint;
+    let child_number = be_u32;
     let public_key = map_res(
         map(take::<_, Input, Error>(33usize), to_fixed_bytes::<_, 33>),
         |pk| PublicKey::from_slice(&pk),
@@ -162,6 +161,17 @@ where
     Ok((i, Fingerprint(buf)))
 }
 
+/// Parses a BIP-32 chain code.
+pub fn chain_code<Input, Error>(i: Input) -> IResult<Input, [u8; 32], Error>
+where
+    Input: PartialEq + Clone + Slice<RangeFrom<usize>> + InputIter<Item = u8> + InputLength,
+    Error: ParseError<Input>,
+{
+    let mut buf = [0; 32];
+    let (i, ()) = fill(u8, &mut buf)(i)?;
+    Ok((i, buf))
+}
+
 /// Parses a [`KeySource`].
 pub fn key_source<Input, Error>(i: Input) -> IResult<Input, KeySource<Input>, Error>
 where