algorithms may only support certain sizes. You may
pass 0 for this parameter, in which case an
appropriate length will be chosen for you.
algorithms may only support certain sizes. You may
pass 0 for this parameter, in which case an
appropriate length will be chosen for you.
@param error A pointer to a CFErrorRef. This pointer will be set
if an error occurred. This value may be NULL if you
do not want an error returned.
@param error A pointer to a CFErrorRef. This pointer will be set
if an error occurred. This value may be NULL if you
do not want an error returned.