/*
* Store a private key object.
*/
static int
incrypto34_store_key(sc_profile_t *profile, sc_card_t *card,
sc_pkcs15_object_t *obj,
sc_pkcs15_prkey_t *key)
{
sc_pkcs15_prkey_info_t *key_info = (sc_pkcs15_prkey_info_t *) obj->data;
int algorithm, r;
if (obj->type != SC_PKCS15_TYPE_PRKEY_RSA) {
sc_error(card->ctx, "Incrypto34 supports RSA keys only.");
return SC_ERROR_NOT_SUPPORTED;
}
if (incrypto34_key_algorithm(key_info->usage, &algorithm) < 0) {
sc_error(card->ctx, "Incrypto34 does not support keys "
"that can both sign _and_ decrypt.");
return SC_ERROR_NOT_SUPPORTED;
}
r = incrypto34_put_key(profile, card, algorithm, key_info, &key->u.rsa);
return r;
}
/*
* Key generation
*/
static int
incrypto34_generate_key(sc_profile_t *profile, sc_pkcs15_card_t *p15card,
sc_pkcs15_object_t *obj,
sc_pkcs15_pubkey_t *pubkey)
{
sc_pkcs15_prkey_info_t *key_info = (sc_pkcs15_prkey_info_t *) obj->data;
sc_card_t *card = p15card->card;
struct sc_pkcs15_prkey_rsa key_obj;
struct sc_cardctl_incrypto34_genkey_info args;
struct sc_file *temp;
u8 abignum[RSAKEY_MAX_SIZE];
unsigned int keybits;
int algorithm, r, delete_it = 0;
if (obj->type != SC_PKCS15_TYPE_PRKEY_RSA) {
sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Incrypto34 supports only RSA keys.");
return SC_ERROR_NOT_SUPPORTED;
}
if (incrypto34_key_algorithm(key_info->usage, &algorithm) < 0) {
sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Incrypto34 does not support keys "
"that can both sign _and_ decrypt.");
return SC_ERROR_NOT_SUPPORTED;
}
keybits = key_info->modulus_length & ~7UL;
if (keybits > RSAKEY_MAX_BITS) {
sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Unable to generate key, max size is %d",
RSAKEY_MAX_BITS);
return SC_ERROR_INVALID_ARGUMENTS;
}
if (sc_profile_get_file(profile, "tempfile", &temp) < 0) {
sc_debug(card->ctx, SC_LOG_DEBUG_NORMAL, "Profile doesn't define temporary file "
"for key generation.");
return SC_ERROR_NOT_SUPPORTED;
}
memset(pubkey, 0, sizeof(*pubkey));
if ((r = sc_pkcs15init_create_file(profile, p15card, temp)) < 0)
goto out;
delete_it = 1;
/* Create a key object, initializing components to 0xff */
memset(&key_obj, 0, sizeof(key_obj));
memset(abignum, 0xFF, sizeof(abignum));
key_obj.modulus.data = abignum;
key_obj.modulus.len = keybits >> 3;
key_obj.d.data = abignum;
key_obj.d.len = keybits >> 3;
r = incrypto34_put_key(profile, p15card, algorithm, key_info, &key_obj);
if (r < 0)
goto out;
memset(&args, 0, sizeof(args));
args.key_id = key_info->key_reference;
args.key_bits = keybits;
args.fid = temp->id;
r = sc_card_ctl(card, SC_CARDCTL_INCRYPTO34_GENERATE_KEY, &args);
if (r < 0)
goto out;
/* extract public key from file and delete it */
if ((r = sc_select_file(card, &temp->path, NULL)) < 0)
goto out;
r = incrypto34_extract_pubkey(card, 1, 0x10, &pubkey->u.rsa.modulus);
if (r < 0)
goto out;
r = incrypto34_extract_pubkey(card, 2, 0x11, &pubkey->u.rsa.exponent);
if (r < 0)
goto out;
pubkey->algorithm = SC_ALGORITHM_RSA;
out: if (delete_it) {
sc_pkcs15init_rmdir(p15card, profile, temp);
}
sc_file_free(temp);
if (r < 0) {
if (pubkey->u.rsa.modulus.data)
free (pubkey->u.rsa.modulus.data);
if (pubkey->u.rsa.exponent.data)
free (pubkey->u.rsa.exponent.data);
}
return r;
}
