@subheading asn1_read_node_value
@anchor{asn1_read_node_value}
@deftypefun {int} {asn1_read_node_value} (asn1_node @var{node}, asn1_data_node_st * @var{data})
@var{node}: pointer to a node.

@var{data}: a point to a asn1_data_node_st

Returns the value a data node inside a asn1_node structure.
The data returned should be handled as constant values.

@strong{Returns:} @code{ASN1_SUCCESS}  if the node exists.
@end deftypefun