From e5802d2855522ca2b67db286cc8ed5cf5537ac27 Mon Sep 17 00:00:00 2001
From: Sosthene <contact@sosthene.net>
Date: Mon, 30 Jun 2025 19:41:23 +0200
Subject: [PATCH] Add verify_merkle_proof()

---
 src/crypto.rs | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/crypto.rs b/src/crypto.rs
index aa5c315..972c658 100644
--- a/src/crypto.rs
+++ b/src/crypto.rs
@@ -1,4 +1,5 @@
 use anyhow::Result;
+use rs_merkle::{algorithms::Sha256, MerkleProof};
 use sp_client::silentpayments::{
     bitcoin_hashes::{sha256t_hash_newtype, Hash, HashEngine},
     secp256k1::PublicKey,
@@ -61,3 +62,8 @@ pub fn decrypt_with_key(key: &[u8; 32], ciphertext: &[u8]) -> Result<Vec<u8>> {
 
     Ok(plaintext)
 }
+
+pub fn verify_merkle_proof(proof: &[u8], root: &[u8; 32], index: usize, hash: &[u8; 32], total_leaves_count: usize) -> Result<bool> {
+    let proof = MerkleProof::<Sha256>::from_bytes(proof)?;
+    Ok(proof.verify(*root, &[index], &[*hash], total_leaves_count))
+}