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SC-HSM: Check maximum for get_challenge

This commit is contained in:
Frank Morgner 2018-01-23 14:10:26 +01:00
parent 410cdf0dcc
commit cbba3b82f2
1 changed files with 14 additions and 0 deletions
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14
src/libopensc/card-sc-hsm.c
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@ -225,6 +225,19 @@ static int sc_hsm_select_file(sc_card_t *card,
static int sc_hsm_get_challenge(struct sc_card *card, unsigned char *rnd, size_t len)
{
LOG_FUNC_CALLED(card->ctx);
if (len > 1024) {
len = 1024;
}
LOG_FUNC_RETURN(card->ctx, iso_ops->get_challenge(card, rnd, len));
}
static int sc_hsm_match_card(struct sc_card *card)
{
sc_path_t path;
@ -1703,6 +1716,7 @@ static struct sc_card_driver * sc_get_driver(void)
sc_hsm_ops = *iso_drv->ops;
sc_hsm_ops.match_card = sc_hsm_match_card;
sc_hsm_ops.select_file = sc_hsm_select_file;
sc_hsm_ops.get_challenge = sc_hsm_get_challenge;
sc_hsm_ops.read_binary = sc_hsm_read_binary;
sc_hsm_ops.update_binary = sc_hsm_update_binary;
sc_hsm_ops.list_files = sc_hsm_list_files;