SC_GET_CHALLENGE(3) OpenSC API reference SC_GET_CHALLENGE(3)NAME
sc_get_challenge - Request a challenge from a card
SYNOPSIS
#include <opensc.h>
int sc_get_challenge(struct sc_card *card, unsigned char *rnd, size_t len);
DESCRIPTION
This function requests a challenge (i.e. random bytes) from card. The
returned data will be stored in rnd, and will be len bytes long.
RETURN VALUE
Returns 0 if successful, or a negative value in case of error.
opensc 08/27/2008 SC_GET_CHALLENGE(3)