add more checking in rpc response

beacon_chain/spec/eip7594_helpers.nim

@@ -387,6 +387,9 @@ proc verify_data_column_sidecar_kzg_proofs*(sidecar: DataColumnSidecar):
   ## Verify if the KZG Proofs consisting in the `DataColumnSidecar`
   ## is valid or not.
   
+  if not (sidecar.kzg_commitments.len == 0):
+    return err("Kzg commitments length cannot be 0")
+
   # Check if the data column sidecar index < NUMBER_OF_COLUMNS
   if not (sidecar.index < NUMBER_OF_COLUMNS):
     return err("Data column sidecar index exceeds the NUMBER_OF_COLUMNS")

beacon_chain/sync/request_manager.nim

@@ -153,6 +153,8 @@ proc checkResponse(colIdList: seq[DataColumnIdentifier],
         break
     if not found:
       return false
+    column[].verify_data_column_sidecar_kzg_proofs()isOkOr:
+      return false
     column[].verify_data_column_sidecar_inclusion_proof().isOkOr:
       return false
   true