# File lib/chef/checksum_cache.rb, line 124
    def generate_checksum(key, file, fstat)
      checksum = checksum_file(file, Digest::SHA256.new)
      moneta.store(key, {"mtime" => fstat.mtime.to_f, "checksum" => checksum})
      validate_checksum(key)
      checksum
    end