int
tls_config_set_ecdhecurves(struct tls_config *config, const char *curves)
{
int *curves_list = NULL, *curves_new;
size_t curves_num = 0;
char *cs = NULL;
char *p, *q;
int rv = -1;
int nid;
free(config->ecdhecurves);
config->ecdhecurves = NULL;
config->ecdhecurves_len = 0;
if (curves == NULL || strcasecmp(curves, "default") == 0)
curves = TLS_ECDHE_CURVES;
if ((cs = strdup(curves)) == NULL) {
tls_config_set_errorx(config, "out of memory");
goto err;
}
q = cs;
while ((p = strsep(&q, ",:")) != NULL) {
while (*p == ' ' || *p == '\t')
p++;
nid = OBJ_sn2nid(p);
if (nid == NID_undef)
nid = OBJ_ln2nid(p);
if (nid == NID_undef)
nid = EC_curve_nist2nid(p);
if (nid == NID_undef) {
tls_config_set_errorx(config,
"invalid ecdhe curve '%s'", p);
goto err;
}
if ((curves_new = reallocarray(curves_list, curves_num + 1,
sizeof(int))) == NULL) {
tls_config_set_errorx(config, "out of memory");
goto err;
}
curves_list = curves_new;
curves_list[curves_num] = nid;
curves_num++;
}
config->ecdhecurves = curves_list;
config->ecdhecurves_len = curves_num;
curves_list = NULL;
rv = 0;
err:
free(cs);
free(curves_list);
return (rv);
}
/* ECDH temporary parameters */
static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
{
int rv = 1;
EC_KEY *ecdh;
int nid;
/* Ignore values supported by 1.0.2 for the automatic selection */
if ((cctx->flags & SSL_CONF_FLAG_FILE) &&
strcasecmp(value, "+automatic") == 0)
return 1;
if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
strcmp(value, "auto") == 0)
return 1;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == 0)
return 0;
ecdh = EC_KEY_new_by_curve_name(nid);
if (!ecdh)
return 0;
if (cctx->ctx)
rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
else if (cctx->ssl)
rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
EC_KEY_free(ecdh);
return rv > 0;
}
/* ECDH temporary parameters */
static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
{
int onoff = -1, rv = 1;
if (!(cctx->flags & SSL_CONF_FLAG_SERVER))
return -2;
if (cctx->flags & SSL_CONF_FLAG_FILE)
{
if (*value == '+')
{
onoff = 1;
value++;
}
if (*value == '-')
{
onoff = 0;
value++;
}
if (!strcasecmp(value, "automatic"))
{
if (onoff == -1)
onoff = 1;
}
else if (onoff != -1)
return 0;
}
else if (cctx->flags & SSL_CONF_FLAG_CMDLINE)
{
if (!strcmp(value, "auto"))
onoff = 1;
}
if (onoff != -1)
{
if (cctx->ctx)
rv = SSL_CTX_set_ecdh_auto(cctx->ctx, onoff);
else if (cctx->ssl)
rv = SSL_set_ecdh_auto(cctx->ssl, onoff);
}
else
{
EC_KEY *ecdh;
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == 0)
return 0;
ecdh = EC_KEY_new_by_curve_name(nid);
if (!ecdh)
return 0;
if (cctx->ctx)
rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
else if (cctx->ssl)
rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
EC_KEY_free(ecdh);
}
return rv > 0;
}
static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (strcmp(type, "ec_paramgen_curve") == 0) {
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == NID_undef)
nid = OBJ_ln2nid(value);
if (nid == NID_undef) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
return 0;
}
return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
#ifndef OPENSSL_NO_SM2
} else if (!strcmp(type, "ec_scheme")) {
int scheme;
if (!strcmp(value, "secg"))
scheme = NID_secg_scheme;
else if (!strcmp(value, "sm2"))
scheme = NID_sm_scheme;
else
return -2;
return EVP_PKEY_CTX_set_ec_scheme(ctx, scheme);
} else if (!strcmp(type, "signer_id")) {
return EVP_PKEY_CTX_set_signer_id(ctx, value);
} else if (!strcmp(type, "ec_encrypt_param")) {
int encrypt_param;
if (!(encrypt_param = OBJ_txt2nid(value))) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_EC_ENCRYPT_PARAM);
return 0;
}
return EVP_PKEY_CTX_set_ec_encrypt_param(ctx, encrypt_param);
#endif
} else if (strcmp(type, "ec_param_enc") == 0) {
int param_enc;
if (strcmp(value, "explicit") == 0)
param_enc = 0;
else if (strcmp(value, "named_curve") == 0)
param_enc = OPENSSL_EC_NAMED_CURVE;
else
return -2;
return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
} else if (strcmp(type, "ecdh_kdf_md") == 0) {
const EVP_MD *md;
if ((md = EVP_get_digestbyname(value)) == NULL) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_DIGEST);
return 0;
}
return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md);
} else if (strcmp(type, "ecdh_cofactor_mode") == 0) {
int co_mode;
co_mode = atoi(value);
return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, co_mode);
}
return -2;
}
int
tls1_set_groups_list(uint16_t **out_group_ids, size_t *out_group_ids_len,
const char *groups)
{
uint16_t *new_group_ids, *group_ids = NULL;
size_t ngroups = 0;
char *gs, *p, *q;
int nid;
if ((gs = strdup(groups)) == NULL)
return 0;
q = gs;
while ((p = strsep(&q, ":")) != NULL) {
nid = OBJ_sn2nid(p);
if (nid == NID_undef)
nid = OBJ_ln2nid(p);
if (nid == NID_undef)
nid = EC_curve_nist2nid(p);
if (nid == NID_undef)
goto err;
if ((new_group_ids = reallocarray(group_ids, ngroups + 1,
sizeof(uint16_t))) == NULL)
goto err;
group_ids = new_group_ids;
group_ids[ngroups] = tls1_ec_nid2curve_id(nid);
if (group_ids[ngroups] == 0)
goto err;
ngroups++;
}
free(gs);
free(*out_group_ids);
*out_group_ids = group_ids;
*out_group_ids_len = ngroups;
return 1;
err:
free(gs);
free(group_ids);
return 0;
}
static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (strcmp(type, "ec_paramgen_curve") == 0) {
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == NID_undef)
nid = OBJ_ln2nid(value);
if (nid == NID_undef) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
return 0;
}
return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
} else if (strcmp(type, "ec_param_enc") == 0) {
int param_enc;
if (strcmp(value, "explicit") == 0)
param_enc = 0;
else if (strcmp(value, "named_curve") == 0)
param_enc = OPENSSL_EC_NAMED_CURVE;
else
return -2;
return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
} else if (strcmp(type, "ecdh_kdf_md") == 0) {
const EVP_MD *md;
md = EVP_get_digestbyname(value);
if (md == NULL) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_DIGEST);
return 0;
}
return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md);
} else if (strcmp(type, "ecdh_cofactor_mode") == 0) {
uint8_t error;
int co_mode;
co_mode = safe_atoi(value, INT_MIN, INT_MAX, &error);
if (error)
return 0; /* TODO(KC): Is this the correct error to return here? */
return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, co_mode);
}
return -2;
}
/* ECDH temporary parameters */
static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
{
int rv = 1;
EC_KEY *ecdh;
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == 0)
return 0;
ecdh = EC_KEY_new_by_curve_name(nid);
if (!ecdh)
return 0;
if (cctx->ctx)
rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
else if (cctx->ssl)
rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
EC_KEY_free(ecdh);
return rv > 0;
}
static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (!strcmp(type, "ec_paramgen_curve")) {
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == NID_undef)
nid = OBJ_ln2nid(value);
if (nid == NID_undef) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
return 0;
}
return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
} else if (!strcmp(type, "ec_param_enc")) {
int param_enc;
if (!strcmp(value, "explicit"))
param_enc = 0;
else if (!strcmp(value, "named_curve"))
param_enc = OPENSSL_EC_NAMED_CURVE;
else
return -2;
return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
} else if (!strcmp(type, "ecdh_kdf_md")) {
const EVP_MD *md;
if (!(md = EVP_get_digestbyname(value))) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_DIGEST);
return 0;
}
return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md);
} else if (!strcmp(type, "ecdh_cofactor_mode")) {
int co_mode;
co_mode = atoi(value);
return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, co_mode);
}
return -2;
}
__owur static int parse_expected_key_type(int *ptype, const char *value)
{
int nid;
const EVP_PKEY_ASN1_METHOD *ameth;
if (value == NULL)
return 0;
ameth = EVP_PKEY_asn1_find_str(NULL, value, -1);
if (ameth != NULL)
EVP_PKEY_asn1_get0_info(&nid, NULL, NULL, NULL, NULL, ameth);
else
nid = OBJ_sn2nid(value);
if (nid == NID_undef)
nid = OBJ_ln2nid(value);
#ifndef OPENSSL_NO_EC
if (nid == NID_undef)
nid = EC_curve_nist2nid(value);
#endif
if (nid == NID_undef)
return 0;
*ptype = nid;
return 1;
}
static int pkey_ec_ctrl_str(EVP_PKEY_CTX *ctx,
const char *type, const char *value)
{
if (!strcmp(type, "ec_paramgen_curve")) {
int nid;
nid = EC_curve_nist2nid(value);
if (nid == NID_undef)
nid = OBJ_sn2nid(value);
if (nid == NID_undef)
nid = OBJ_ln2nid(value);
if (nid == NID_undef) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_CURVE);
return 0;
}
printf("curve = %s\n", value);
return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, nid);
} else if (!strcmp(type, "ec_param_enc")) {
int param_enc;
if (!strcmp(value, "explicit"))
param_enc = 0;
else if (!strcmp(value, "named_curve"))
param_enc = OPENSSL_EC_NAMED_CURVE;
else
return -2;
return EVP_PKEY_CTX_set_ec_param_enc(ctx, param_enc);
#ifndef OPENSSL_NO_GMSSL
} else if (!strcmp(type, "ec_sign_algor")) {
int sign_type;
if (!strcmp(value, "ecdsa"))
sign_type = NID_secg_scheme;
else if (!strcmp(value, "sm2"))
sign_type = NID_sm_scheme;
else
return -2;
return EVP_PKEY_CTX_set_ec_sign_type(ctx, sign_type);
} else if (!strcmp(type, "ec_encrypt_algor")) {
int enc_type;
if (!strcmp(value, "ecies"))
enc_type = NID_secg_scheme;
else if (!strcmp(value, "sm2"))
enc_type = NID_sm_scheme;
else
return -2;
return EVP_PKEY_CTX_set_ec_enc_type(ctx, enc_type);
} else if (!strcmp(type, "ec_derive_algor")) {
int dh_type;
if (!strcmp(value, "ecdh"))
dh_type = NID_secg_scheme;
else if (!strcmp(value, "sm2"))
dh_type = NID_sm_scheme;
else
return -2;
return EVP_PKEY_CTX_set_ec_dh_type(ctx, dh_type);
#endif
} else if (!strcmp(type, "ecdh_kdf_md")) {
const EVP_MD *md;
if (!(md = EVP_get_digestbyname(value))) {
ECerr(EC_F_PKEY_EC_CTRL_STR, EC_R_INVALID_DIGEST);
return 0;
}
return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, md);
} else if (!strcmp(type, "ecdh_cofactor_mode")) {
int co_mode;
co_mode = atoi(value);
return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, co_mode);
}
return -2;
}
int ecparam_main(int argc, char **argv)
{
BIGNUM *ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL;
BIO *in = NULL, *out = NULL;
EC_GROUP *group = NULL;
point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
char *curve_name = NULL, *inrand = NULL;
char *infile = NULL, *outfile = NULL, *prog;
unsigned char *buffer = NULL;
OPTION_CHOICE o;
int asn1_flag = OPENSSL_EC_NAMED_CURVE, new_asn1_flag = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0, ret =
1;
int list_curves = 0, no_seed = 0, check = 0, new_form = 0;
int text = 0, i, need_rand = 0, genkey = 0;
prog = opt_init(argc, argv, ecparam_options);
while ((o = opt_next()) != OPT_EOF) {
switch (o) {
case OPT_EOF:
case OPT_ERR:
opthelp:
BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
goto end;
case OPT_HELP:
opt_help(ecparam_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_TEXT:
text = 1;
break;
case OPT_C:
C = 1;
break;
case OPT_CHECK:
check = 1;
break;
case OPT_LIST_CURVES:
list_curves = 1;
break;
case OPT_NO_SEED:
no_seed = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_NAME:
curve_name = opt_arg();
break;
case OPT_CONV_FORM:
if (!opt_pair(opt_arg(), forms, &new_form))
goto opthelp;
form = new_form;
new_form = 1;
break;
case OPT_PARAM_ENC:
if (!opt_pair(opt_arg(), encodings, &asn1_flag))
goto opthelp;
new_asn1_flag = 1;
break;
case OPT_GENKEY:
genkey = need_rand = 1;
break;
case OPT_RAND:
inrand = opt_arg();
need_rand = 1;
break;
case OPT_ENGINE:
(void)setup_engine(opt_arg(), 0);
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
in = bio_open_default(infile, RB(informat));
if (in == NULL)
goto end;
out = bio_open_default(outfile, WB(outformat));
if (out == NULL)
goto end;
if (list_curves) {
EC_builtin_curve *curves = NULL;
size_t crv_len = EC_get_builtin_curves(NULL, 0);
size_t n;
curves = app_malloc((int)sizeof(*curves) * crv_len, "list curves");
if (!EC_get_builtin_curves(curves, crv_len)) {
OPENSSL_free(curves);
goto end;
}
for (n = 0; n < crv_len; n++) {
const char *comment;
const char *sname;
comment = curves[n].comment;
sname = OBJ_nid2sn(curves[n].nid);
if (comment == NULL)
comment = "CURVE DESCRIPTION NOT AVAILABLE";
if (sname == NULL)
sname = "";
BIO_printf(out, " %-10s: ", sname);
BIO_printf(out, "%s\n", comment);
}
OPENSSL_free(curves);
ret = 0;
goto end;
}
if (curve_name != NULL) {
int nid;
/*
* workaround for the SECG curve names secp192r1 and secp256r1 (which
* are the same as the curves prime192v1 and prime256v1 defined in
* X9.62)
*/
if (strcmp(curve_name, "secp192r1") == 0) {
BIO_printf(bio_err, "using curve name prime192v1 "
"instead of secp192r1\n");
nid = NID_X9_62_prime192v1;
} else if (strcmp(curve_name, "secp256r1") == 0) {
BIO_printf(bio_err, "using curve name prime256v1 "
"instead of secp256r1\n");
nid = NID_X9_62_prime256v1;
} else
nid = OBJ_sn2nid(curve_name);
if (nid == 0)
nid = EC_curve_nist2nid(curve_name);
if (nid == 0) {
BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name);
goto end;
}
group = EC_GROUP_new_by_curve_name(nid);
if (group == NULL) {
BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name);
goto end;
}
EC_GROUP_set_asn1_flag(group, asn1_flag);
EC_GROUP_set_point_conversion_form(group, form);
} else if (informat == FORMAT_ASN1)
group = d2i_ECPKParameters_bio(in, NULL);
else
group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
if (group == NULL) {
BIO_printf(bio_err, "unable to load elliptic curve parameters\n");
ERR_print_errors(bio_err);
goto end;
}
if (new_form)
EC_GROUP_set_point_conversion_form(group, form);
if (new_asn1_flag)
EC_GROUP_set_asn1_flag(group, asn1_flag);
if (no_seed) {
EC_GROUP_set_seed(group, NULL, 0);
}
if (text) {
if (!ECPKParameters_print(out, group, 0))
goto end;
}
if (check) {
if (group == NULL)
BIO_printf(bio_err, "no elliptic curve parameters\n");
BIO_printf(bio_err, "checking elliptic curve parameters: ");
if (!EC_GROUP_check(group, NULL)) {
BIO_printf(bio_err, "failed\n");
ERR_print_errors(bio_err);
} else
BIO_printf(bio_err, "ok\n");
}
if (C) {
size_t buf_len = 0, tmp_len = 0;
const EC_POINT *point;
int is_prime, len = 0;
const EC_METHOD *meth = EC_GROUP_method_of(group);
if ((ec_p = BN_new()) == NULL
|| (ec_a = BN_new()) == NULL
|| (ec_b = BN_new()) == NULL
|| (ec_gen = BN_new()) == NULL
|| (ec_order = BN_new()) == NULL
|| (ec_cofactor = BN_new()) == NULL) {
perror("Can't allocate BN");
goto end;
}
is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field);
if (!is_prime) {
BIO_printf(bio_err, "Can only handle X9.62 prime fields\n");
goto end;
}
if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, ec_b, NULL))
goto end;
if ((point = EC_GROUP_get0_generator(group)) == NULL)
goto end;
if (!EC_POINT_point2bn(group, point,
EC_GROUP_get_point_conversion_form(group),
ec_gen, NULL))
goto end;
if (!EC_GROUP_get_order(group, ec_order, NULL))
goto end;
if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
goto end;
if (!ec_p || !ec_a || !ec_b || !ec_gen || !ec_order || !ec_cofactor)
goto end;
len = BN_num_bits(ec_order);
if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
buf_len = tmp_len;
buffer = app_malloc(buf_len, "BN buffer");
BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n{\n", len);
print_bignum_var(out, ec_p, "ec_p", len, buffer);
print_bignum_var(out, ec_a, "ec_a", len, buffer);
print_bignum_var(out, ec_b, "ec_b", len, buffer);
print_bignum_var(out, ec_gen, "ec_gen", len, buffer);
print_bignum_var(out, ec_order, "ec_order", len, buffer);
print_bignum_var(out, ec_cofactor, "ec_cofactor", len, buffer);
BIO_printf(out, " int ok = 0;\n"
" EC_GROUP *group = NULL;\n"
" EC_POINT *point = NULL;\n"
" BIGNUM *tmp_1 = NULL;\n"
" BIGNUM *tmp_2 = NULL;\n"
" BIGNUM *tmp_3 = NULL;\n"
"\n");
BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_p_%d, sizeof (ec_p_%d), NULL)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_a_%d, sizeof (ec_a_%d), NULL)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_b_%d, sizeof (ec_b_%d), NULL)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " if ((group = EC_GROUP_new_curve_GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)\n"
" goto err;\n"
"\n");
BIO_printf(out, " /* build generator */\n");
BIO_printf(out, " if ((tmp_1 = BN_bin2bn(ec_gen_%d, sizeof (ec_gen_%d), tmp_1)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " point = EC_POINT_bn2point(group, tmp_1, NULL, NULL);\n");
BIO_printf(out, " if (point == NULL)\n"
" goto err;\n");
BIO_printf(out, " if ((tmp_2 = BN_bin2bn(ec_order_%d, sizeof (ec_order_%d), tmp_2)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " if ((tmp_3 = BN_bin2bn(ec_cofactor_%d, sizeof (ec_cofactor_%d), tmp_3)) == NULL)\n"
" goto err;\n", len, len);
BIO_printf(out, " if (!EC_GROUP_set_generator(group, point, tmp_2, tmp_3))\n"
" goto err;\n"
"ok = 1;"
"\n");
BIO_printf(out, "err:\n"
" BN_free(tmp_1);\n"
" BN_free(tmp_2);\n"
" BN_free(tmp_3);\n"
" EC_POINT_free(point);\n"
" if (!ok) {\n"
" EC_GROUP_free(group);\n"
" return NULL;\n"
" }\n"
" return (group);\n"
"}\n");
}
if (!noout) {
if (outformat == FORMAT_ASN1)
i = i2d_ECPKParameters_bio(out, group);
else
i = PEM_write_bio_ECPKParameters(out, group);
if (!i) {
BIO_printf(bio_err, "unable to write elliptic "
"curve parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (need_rand) {
app_RAND_load_file(NULL, (inrand != NULL));
if (inrand != NULL)
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
}
if (genkey) {
EC_KEY *eckey = EC_KEY_new();
if (eckey == NULL)
goto end;
assert(need_rand);
if (EC_KEY_set_group(eckey, group) == 0)
goto end;
if (!EC_KEY_generate_key(eckey)) {
EC_KEY_free(eckey);
goto end;
}
if (outformat == FORMAT_ASN1)
i = i2d_ECPrivateKey_bio(out, eckey);
else
i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
NULL, 0, NULL, NULL);
EC_KEY_free(eckey);
}
if (need_rand)
app_RAND_write_file(NULL);
ret = 0;
end:
BN_free(ec_p);
BN_free(ec_a);
BN_free(ec_b);
BN_free(ec_gen);
BN_free(ec_order);
BN_free(ec_cofactor);
OPENSSL_free(buffer);
BIO_free(in);
BIO_free_all(out);
EC_GROUP_free(group);
return (ret);
}
int MAIN(int argc, char **argv)
{
EC_GROUP *group = NULL;
point_conversion_form_t form = POINT_CONVERSION_UNCOMPRESSED;
int new_form = 0;
int asn1_flag = OPENSSL_EC_NAMED_CURVE;
int new_asn1_flag = 0;
char *curve_name = NULL, *inrand = NULL;
int list_curves = 0, no_seed = 0, check = 0,
badops = 0, text = 0, i, need_rand = 0, genkey = 0;
char *infile = NULL, *outfile = NULL, *prog;
BIO *in = NULL, *out = NULL;
int informat, outformat, noout = 0, C = 0, ret = 1;
char *engine = NULL;
BIGNUM *ec_p = NULL, *ec_a = NULL, *ec_b = NULL,
*ec_gen = NULL, *ec_order = NULL, *ec_cofactor = NULL;
unsigned char *buffer = NULL;
apps_startup();
if (bio_err == NULL)
if ((bio_err = BIO_new(BIO_s_file())) != NULL)
BIO_set_fp(bio_err, stderr, BIO_NOCLOSE | BIO_FP_TEXT);
if (!load_config(bio_err, NULL))
goto end;
informat = FORMAT_PEM;
outformat = FORMAT_PEM;
prog = argv[0];
argc--;
argv++;
while (argc >= 1) {
if (strcmp(*argv, "-inform") == 0) {
if (--argc < 1)
goto bad;
informat = str2fmt(*(++argv));
} else if (strcmp(*argv, "-outform") == 0) {
if (--argc < 1)
goto bad;
outformat = str2fmt(*(++argv));
} else if (strcmp(*argv, "-in") == 0) {
if (--argc < 1)
goto bad;
infile = *(++argv);
} else if (strcmp(*argv, "-out") == 0) {
if (--argc < 1)
goto bad;
outfile = *(++argv);
} else if (strcmp(*argv, "-text") == 0)
text = 1;
else if (strcmp(*argv, "-C") == 0)
C = 1;
else if (strcmp(*argv, "-check") == 0)
check = 1;
else if (strcmp(*argv, "-name") == 0) {
if (--argc < 1)
goto bad;
curve_name = *(++argv);
} else if (strcmp(*argv, "-list_curves") == 0)
list_curves = 1;
else if (strcmp(*argv, "-conv_form") == 0) {
if (--argc < 1)
goto bad;
++argv;
new_form = 1;
if (strcmp(*argv, "compressed") == 0)
form = POINT_CONVERSION_COMPRESSED;
else if (strcmp(*argv, "uncompressed") == 0)
form = POINT_CONVERSION_UNCOMPRESSED;
else if (strcmp(*argv, "hybrid") == 0)
form = POINT_CONVERSION_HYBRID;
else
goto bad;
} else if (strcmp(*argv, "-param_enc") == 0) {
if (--argc < 1)
goto bad;
++argv;
new_asn1_flag = 1;
if (strcmp(*argv, "named_curve") == 0)
asn1_flag = OPENSSL_EC_NAMED_CURVE;
else if (strcmp(*argv, "explicit") == 0)
asn1_flag = 0;
else
goto bad;
} else if (strcmp(*argv, "-no_seed") == 0)
no_seed = 1;
else if (strcmp(*argv, "-noout") == 0)
noout = 1;
else if (strcmp(*argv, "-genkey") == 0) {
genkey = 1;
need_rand = 1;
} else if (strcmp(*argv, "-rand") == 0) {
if (--argc < 1)
goto bad;
inrand = *(++argv);
need_rand = 1;
} else if (strcmp(*argv, "-engine") == 0) {
if (--argc < 1)
goto bad;
engine = *(++argv);
} else {
BIO_printf(bio_err, "unknown option %s\n", *argv);
badops = 1;
break;
}
argc--;
argv++;
}
if (badops) {
bad:
BIO_printf(bio_err, "%s [options] <infile >outfile\n", prog);
BIO_printf(bio_err, "where options are\n");
BIO_printf(bio_err, " -inform arg input format - "
"default PEM (DER or PEM)\n");
BIO_printf(bio_err, " -outform arg output format - "
"default PEM\n");
BIO_printf(bio_err, " -in arg input file - "
"default stdin\n");
BIO_printf(bio_err, " -out arg output file - "
"default stdout\n");
BIO_printf(bio_err, " -noout do not print the "
"ec parameter\n");
BIO_printf(bio_err, " -text print the ec "
"parameters in text form\n");
BIO_printf(bio_err, " -check validate the ec "
"parameters\n");
BIO_printf(bio_err, " -C print a 'C' "
"function creating the parameters\n");
BIO_printf(bio_err, " -name arg use the "
"ec parameters with 'short name' name\n");
BIO_printf(bio_err, " -list_curves prints a list of "
"all currently available curve 'short names'\n");
BIO_printf(bio_err, " -conv_form arg specifies the "
"point conversion form \n");
BIO_printf(bio_err, " possible values:"
" compressed\n");
BIO_printf(bio_err, " "
" uncompressed (default)\n");
BIO_printf(bio_err, " "
" hybrid\n");
BIO_printf(bio_err, " -param_enc arg specifies the way"
" the ec parameters are encoded\n");
BIO_printf(bio_err, " in the asn1 der "
"encoding\n");
BIO_printf(bio_err, " possible values:"
" named_curve (default)\n");
BIO_printf(bio_err, " "
" explicit\n");
BIO_printf(bio_err, " -no_seed if 'explicit'"
" parameters are chosen do not" " use the seed\n");
BIO_printf(bio_err, " -genkey generate ec" " key\n");
BIO_printf(bio_err, " -rand file files to use for"
" random number input\n");
BIO_printf(bio_err, " -engine e use engine e, "
"possibly a hardware device\n");
goto end;
}
ERR_load_crypto_strings();
in = BIO_new(BIO_s_file());
out = BIO_new(BIO_s_file());
if ((in == NULL) || (out == NULL)) {
ERR_print_errors(bio_err);
goto end;
}
if (infile == NULL)
BIO_set_fp(in, stdin, BIO_NOCLOSE);
else {
if (BIO_read_filename(in, infile) <= 0) {
perror(infile);
goto end;
}
}
if (outfile == NULL) {
BIO_set_fp(out, stdout, BIO_NOCLOSE);
# ifdef OPENSSL_SYS_VMS
{
BIO *tmpbio = BIO_new(BIO_f_linebuffer());
out = BIO_push(tmpbio, out);
}
# endif
} else {
if (BIO_write_filename(out, outfile) <= 0) {
perror(outfile);
goto end;
}
}
# ifndef OPENSSL_NO_ENGINE
setup_engine(bio_err, engine, 0);
# endif
if (list_curves) {
EC_builtin_curve *curves = NULL;
size_t crv_len = 0;
size_t n = 0;
crv_len = EC_get_builtin_curves(NULL, 0);
curves = OPENSSL_malloc((int)(sizeof(EC_builtin_curve) * crv_len));
if (curves == NULL)
goto end;
if (!EC_get_builtin_curves(curves, crv_len)) {
OPENSSL_free(curves);
goto end;
}
for (n = 0; n < crv_len; n++) {
const char *comment;
const char *sname;
comment = curves[n].comment;
sname = OBJ_nid2sn(curves[n].nid);
if (comment == NULL)
comment = "CURVE DESCRIPTION NOT AVAILABLE";
if (sname == NULL)
sname = "";
BIO_printf(out, " %-10s: ", sname);
BIO_printf(out, "%s\n", comment);
}
OPENSSL_free(curves);
ret = 0;
goto end;
}
if (curve_name != NULL) {
int nid;
/*
* workaround for the SECG curve names secp192r1 and secp256r1 (which
* are the same as the curves prime192v1 and prime256v1 defined in
* X9.62)
*/
if (!strcmp(curve_name, "secp192r1")) {
BIO_printf(bio_err, "using curve name prime192v1 "
"instead of secp192r1\n");
nid = NID_X9_62_prime192v1;
} else if (!strcmp(curve_name, "secp256r1")) {
BIO_printf(bio_err, "using curve name prime256v1 "
"instead of secp256r1\n");
nid = NID_X9_62_prime256v1;
} else
nid = OBJ_sn2nid(curve_name);
if (nid == 0)
nid = EC_curve_nist2nid(curve_name);
if (nid == 0) {
BIO_printf(bio_err, "unknown curve name (%s)\n", curve_name);
goto end;
}
group = EC_GROUP_new_by_curve_name(nid);
if (group == NULL) {
BIO_printf(bio_err, "unable to create curve (%s)\n", curve_name);
goto end;
}
EC_GROUP_set_asn1_flag(group, asn1_flag);
EC_GROUP_set_point_conversion_form(group, form);
} else if (informat == FORMAT_ASN1) {
group = d2i_ECPKParameters_bio(in, NULL);
} else if (informat == FORMAT_PEM) {
group = PEM_read_bio_ECPKParameters(in, NULL, NULL, NULL);
} else {
BIO_printf(bio_err, "bad input format specified\n");
goto end;
}
if (group == NULL) {
BIO_printf(bio_err, "unable to load elliptic curve parameters\n");
ERR_print_errors(bio_err);
goto end;
}
if (new_form)
EC_GROUP_set_point_conversion_form(group, form);
if (new_asn1_flag)
EC_GROUP_set_asn1_flag(group, asn1_flag);
if (no_seed) {
EC_GROUP_set_seed(group, NULL, 0);
}
if (text) {
if (!ECPKParameters_print(out, group, 0))
goto end;
}
if (check) {
BIO_printf(bio_err, "checking elliptic curve parameters: ");
if (!EC_GROUP_check(group, NULL)) {
BIO_printf(bio_err, "failed\n");
ERR_print_errors(bio_err);
goto end;
}
BIO_printf(bio_err, "ok\n");
}
if (C) {
size_t buf_len = 0, tmp_len = 0;
const EC_POINT *point;
int is_prime, len = 0;
const EC_METHOD *meth = EC_GROUP_method_of(group);
if ((ec_p = BN_new()) == NULL || (ec_a = BN_new()) == NULL ||
(ec_b = BN_new()) == NULL || (ec_gen = BN_new()) == NULL ||
(ec_order = BN_new()) == NULL ||
(ec_cofactor = BN_new()) == NULL) {
perror("OPENSSL_malloc");
goto end;
}
is_prime = (EC_METHOD_get_field_type(meth) == NID_X9_62_prime_field);
if (is_prime) {
if (!EC_GROUP_get_curve_GFp(group, ec_p, ec_a, ec_b, NULL))
goto end;
} else {
/* TODO */
goto end;
}
if ((point = EC_GROUP_get0_generator(group)) == NULL)
goto end;
if (!EC_POINT_point2bn(group, point,
EC_GROUP_get_point_conversion_form(group),
ec_gen, NULL))
goto end;
if (!EC_GROUP_get_order(group, ec_order, NULL))
goto end;
if (!EC_GROUP_get_cofactor(group, ec_cofactor, NULL))
goto end;
if (!ec_p || !ec_a || !ec_b || !ec_gen || !ec_order || !ec_cofactor)
goto end;
len = BN_num_bits(ec_order);
if ((tmp_len = (size_t)BN_num_bytes(ec_p)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_a)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_b)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_gen)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_order)) > buf_len)
buf_len = tmp_len;
if ((tmp_len = (size_t)BN_num_bytes(ec_cofactor)) > buf_len)
buf_len = tmp_len;
buffer = (unsigned char *)OPENSSL_malloc(buf_len);
if (buffer == NULL) {
perror("OPENSSL_malloc");
goto end;
}
ecparam_print_var(out, ec_p, "ec_p", len, buffer);
ecparam_print_var(out, ec_a, "ec_a", len, buffer);
ecparam_print_var(out, ec_b, "ec_b", len, buffer);
ecparam_print_var(out, ec_gen, "ec_gen", len, buffer);
ecparam_print_var(out, ec_order, "ec_order", len, buffer);
ecparam_print_var(out, ec_cofactor, "ec_cofactor", len, buffer);
BIO_printf(out, "\n\n");
BIO_printf(out, "EC_GROUP *get_ec_group_%d(void)\n\t{\n", len);
BIO_printf(out, "\tint ok=0;\n");
BIO_printf(out, "\tEC_GROUP *group = NULL;\n");
BIO_printf(out, "\tEC_POINT *point = NULL;\n");
BIO_printf(out, "\tBIGNUM *tmp_1 = NULL, *tmp_2 = NULL, "
"*tmp_3 = NULL;\n\n");
BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_p_%d, "
"sizeof(ec_p_%d), NULL)) == NULL)\n\t\t"
"goto err;\n", len, len);
BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_a_%d, "
"sizeof(ec_a_%d), NULL)) == NULL)\n\t\t"
"goto err;\n", len, len);
BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_b_%d, "
"sizeof(ec_b_%d), NULL)) == NULL)\n\t\t"
"goto err;\n", len, len);
if (is_prime) {
BIO_printf(out, "\tif ((group = EC_GROUP_new_curve_"
"GFp(tmp_1, tmp_2, tmp_3, NULL)) == NULL)"
"\n\t\tgoto err;\n\n");
} else {
/* TODO */
goto end;
}
BIO_printf(out, "\t/* build generator */\n");
BIO_printf(out, "\tif ((tmp_1 = BN_bin2bn(ec_gen_%d, "
"sizeof(ec_gen_%d), tmp_1)) == NULL)"
"\n\t\tgoto err;\n", len, len);
BIO_printf(out, "\tpoint = EC_POINT_bn2point(group, tmp_1, "
"NULL, NULL);\n");
BIO_printf(out, "\tif (point == NULL)\n\t\tgoto err;\n");
BIO_printf(out, "\tif ((tmp_2 = BN_bin2bn(ec_order_%d, "
"sizeof(ec_order_%d), tmp_2)) == NULL)"
"\n\t\tgoto err;\n", len, len);
BIO_printf(out, "\tif ((tmp_3 = BN_bin2bn(ec_cofactor_%d, "
"sizeof(ec_cofactor_%d), tmp_3)) == NULL)"
"\n\t\tgoto err;\n", len, len);
BIO_printf(out, "\tif (!EC_GROUP_set_generator(group, point,"
" tmp_2, tmp_3))\n\t\tgoto err;\n");
BIO_printf(out, "\n\tok=1;\n");
BIO_printf(out, "err:\n");
BIO_printf(out, "\tif (tmp_1)\n\t\tBN_free(tmp_1);\n");
BIO_printf(out, "\tif (tmp_2)\n\t\tBN_free(tmp_2);\n");
BIO_printf(out, "\tif (tmp_3)\n\t\tBN_free(tmp_3);\n");
BIO_printf(out, "\tif (point)\n\t\tEC_POINT_free(point);\n");
BIO_printf(out, "\tif (!ok)\n");
BIO_printf(out, "\t\t{\n");
BIO_printf(out, "\t\tEC_GROUP_free(group);\n");
BIO_printf(out, "\t\tgroup = NULL;\n");
BIO_printf(out, "\t\t}\n");
BIO_printf(out, "\treturn(group);\n\t}\n");
}
if (!noout) {
if (outformat == FORMAT_ASN1)
i = i2d_ECPKParameters_bio(out, group);
else if (outformat == FORMAT_PEM)
i = PEM_write_bio_ECPKParameters(out, group);
else {
BIO_printf(bio_err, "bad output format specified for"
" outfile\n");
goto end;
}
if (!i) {
BIO_printf(bio_err, "unable to write elliptic "
"curve parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (need_rand) {
app_RAND_load_file(NULL, bio_err, (inrand != NULL));
if (inrand != NULL)
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
}
if (genkey) {
EC_KEY *eckey = EC_KEY_new();
if (eckey == NULL)
goto end;
assert(need_rand);
if (EC_KEY_set_group(eckey, group) == 0)
goto end;
if (!EC_KEY_generate_key(eckey)) {
EC_KEY_free(eckey);
goto end;
}
if (outformat == FORMAT_ASN1)
i = i2d_ECPrivateKey_bio(out, eckey);
else if (outformat == FORMAT_PEM)
i = PEM_write_bio_ECPrivateKey(out, eckey, NULL,
NULL, 0, NULL, NULL);
else {
BIO_printf(bio_err, "bad output format specified "
"for outfile\n");
EC_KEY_free(eckey);
goto end;
}
EC_KEY_free(eckey);
}
if (need_rand)
app_RAND_write_file(NULL, bio_err);
ret = 0;
end:
if (ec_p)
BN_free(ec_p);
if (ec_a)
BN_free(ec_a);
if (ec_b)
BN_free(ec_b);
if (ec_gen)
BN_free(ec_gen);
if (ec_order)
BN_free(ec_order);
if (ec_cofactor)
BN_free(ec_cofactor);
if (buffer)
OPENSSL_free(buffer);
if (in != NULL)
BIO_free(in);
if (out != NULL)
BIO_free_all(out);
if (group != NULL)
EC_GROUP_free(group);
apps_shutdown();
OPENSSL_EXIT(ret);
}
