OPT_ITER
{ "iter", OPT_ITER, 'p',
case OPT_ITER:
{ "iter", OPT_ITER, 'p', "Specify the iteration count for encryption and MAC" },
case OPT_ITER:
case OPT_ITER:
{ "iter", OPT_ITER, 'p', "Specify the iteration count" },