// WithKey sets a static key.
WithKey sets a static key.
// WithKey sets a static key .
func WithKey(key [8]byte) OptionSetter {
	return func(opts *options) {
		opts.key = key
	}
}
func WithKey ( key [ 8 ] byte ) OptionSetter { return func ( opts * options ) { opts . key = key } }
WithKey sets a static key.
WithKey sets a static key .