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Prevent panic in MerkleTree MultiPath::verify by handling missing leaves #166

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5 changes: 4 additions & 1 deletion crypto-primitives/src/merkle_tree/mod.rs
Original file line number Diff line number Diff line change
Expand Up @@ -278,7 +278,10 @@ impl<P: Config> MultiPath<P> {

for i in 0..self.leaf_indexes.len() {
let leaf_index = self.leaf_indexes[i];
let leaf = leaves.next().unwrap();
let leaf = match leaves.next() {
Some(l) => l,
None => return Err(crate::Error::IncorrectInputLength(self.leaf_indexes.len())),
};
let leaf_sibling_hash = &self.leaf_siblings_hashes[i];

// decode i-th auth path
Expand Down