int
gost2001_keygen(GOST_KEY *ec)
{
BIGNUM *order = BN_new(), *d = BN_new();
const EC_GROUP *group = GOST_KEY_get0_group(ec);
int rc = 0;
if (order == NULL || d == NULL)
goto err;
if (EC_GROUP_get_order(group, order, NULL) == 0)
goto err;
do {
if (BN_rand_range(d, order) == 0) {
GOSTerr(GOST_F_GOST2001_KEYGEN,
GOST_R_RANDOM_NUMBER_GENERATOR_FAILED);
goto err;
}
} while (BN_is_zero(d));
if (GOST_KEY_set_private_key(ec, d) == 0)
goto err;
rc = gost2001_compute_public(ec);
err:
BN_free(d);
BN_free(order);
return rc;
}
static int
priv_decode_gost01(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf)
{
const unsigned char *pkey_buf = NULL, *p = NULL;
int priv_len = 0;
BIGNUM *pk_num = NULL;
int ret = 0;
X509_ALGOR *palg = NULL;
ASN1_OBJECT *palg_obj = NULL;
ASN1_INTEGER *priv_key = NULL;
GOST_KEY *ec;
int ptype = V_ASN1_UNDEF;
ASN1_STRING *pval = NULL;
if (PKCS8_pkey_get0(&palg_obj, &pkey_buf, &priv_len, &palg, p8inf) == 0)
return 0;
(void)EVP_PKEY_assign_GOST(pk, NULL);
X509_ALGOR_get0(NULL, &ptype, (void **)&pval, palg);
if (ptype != V_ASN1_SEQUENCE) {
GOSTerr(GOST_F_PUB_DECODE_GOST01,
GOST_R_BAD_KEY_PARAMETERS_FORMAT);
return 0;
}
p = pval->data;
if (decode_gost01_algor_params(pk, &p, pval->length) == 0)
return 0;
p = pkey_buf;
if (V_ASN1_OCTET_STRING == *p) {
/* New format - Little endian octet string */
unsigned char rev_buf[32];
int i;
ASN1_OCTET_STRING *s =
d2i_ASN1_OCTET_STRING(NULL, &p, priv_len);
if (s == NULL || s->length != 32) {
GOSTerr(GOST_F_PRIV_DECODE_GOST01, EVP_R_DECODE_ERROR);
ASN1_STRING_free(s);
return 0;
}
for (i = 0; i < 32; i++) {
rev_buf[31 - i] = s->data[i];
}
ASN1_STRING_free(s);
pk_num = BN_bin2bn(rev_buf, 32, NULL);
} else {
priv_key = d2i_ASN1_INTEGER(NULL, &p, priv_len);
if (priv_key == NULL)
return 0;
ret = ((pk_num = ASN1_INTEGER_to_BN(priv_key, NULL)) != NULL);
ASN1_INTEGER_free(priv_key);
if (ret == 0) {
GOSTerr(GOST_F_PRIV_DECODE_GOST01, EVP_R_DECODE_ERROR);
return 0;
}
}
ec = pk->pkey.gost;
if (ec == NULL) {
ec = GOST_KEY_new();
if (ec == NULL) {
BN_free(pk_num);
return 0;
}
if (EVP_PKEY_assign_GOST(pk, ec) == 0) {
BN_free(pk_num);
GOST_KEY_free(ec);
return 0;
}
}
if (GOST_KEY_set_private_key(ec, pk_num) == 0) {
BN_free(pk_num);
return 0;
}
ret = 0;
if (EVP_PKEY_missing_parameters(pk) == 0)
ret = gost2001_compute_public(ec) != 0;
BN_free(pk_num);
return ret;
}
