add empty case

crate-crypto · Jan 25, 2024 · 453a592 · 453a592
1 parent 5f7b742
commit 453a592
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/ffi_interface/src/lib.rs b/ffi_interface/src/lib.rs
@@ -137,6 +137,11 @@ pub fn update_commitment_sparse(
     }
 
     let delta_commitment = committer.commit_sparse(delta_values);
+
+    // If commitment is empty, then we are creating a new commitment.
+    if old_commitment_bytes == [0u8; 64] {
+        return Ok(delta_commitment.to_bytes_uncompressed());
+    }
     Ok((delta_commitment + old_commitment).to_bytes_uncompressed())
 }