int dhparam_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
DH *dh = NULL;
char *infile = NULL, *outfile = NULL, *prog, *inrand = NULL;
#ifndef OPENSSL_NO_DSA
int dsaparam = 0;
#endif
int i, text = 0, C = 0, ret = 1, num = 0, g = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, check = 0, noout = 0;
OPTION_CHOICE o;
prog = opt_init(argc, argv, dhparam_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(dhparam_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENGINE:
(void)setup_engine(opt_arg(), 0);
break;
case OPT_CHECK:
check = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_DSAPARAM:
#ifndef OPENSSL_NO_DSA
dsaparam = 1;
#endif
break;
case OPT_C:
C = 1;
break;
case OPT_2:
g = 2;
break;
case OPT_5:
g = 5;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_RAND:
inrand = opt_arg();
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argv[0] && (!opt_int(argv[0], &num) || num <= 0))
goto end;
if (g && !num)
num = DEFBITS;
# ifndef OPENSSL_NO_DSA
if (dsaparam && g) {
BIO_printf(bio_err,
"generator may not be chosen for DSA parameters\n");
goto end;
}
# endif
/* DH parameters */
if (num && !g)
g = 2;
if (num) {
BN_GENCB *cb;
cb = BN_GENCB_new();
if (cb == NULL) {
ERR_print_errors(bio_err);
goto end;
}
BN_GENCB_set(cb, dh_cb, bio_err);
if (!app_RAND_load_file(NULL, 1) && inrand == NULL) {
BIO_printf(bio_err,
"warning, not much extra random data, consider using the -rand option\n");
}
if (inrand != NULL)
BIO_printf(bio_err, "%ld semi-random bytes loaded\n",
app_RAND_load_files(inrand));
# ifndef OPENSSL_NO_DSA
if (dsaparam) {
DSA *dsa = DSA_new();
BIO_printf(bio_err,
"Generating DSA parameters, %d bit long prime\n", num);
if (dsa == NULL
|| !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL,
cb)) {
DSA_free(dsa);
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
if (dh == NULL) {
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
} else
# endif
{
dh = DH_new();
BIO_printf(bio_err,
"Generating DH parameters, %d bit long safe prime, generator %d\n",
num, g);
BIO_printf(bio_err, "This is going to take a long time\n");
if (dh == NULL || !DH_generate_parameters_ex(dh, num, g, cb)) {
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
}
BN_GENCB_free(cb);
app_RAND_write_file(NULL);
} else {
in = bio_open_default(infile, 'r', informat);
if (in == NULL)
goto end;
# ifndef OPENSSL_NO_DSA
if (dsaparam) {
DSA *dsa;
if (informat == FORMAT_ASN1)
dsa = d2i_DSAparams_bio(in, NULL);
else /* informat == FORMAT_PEM */
dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
if (dh == NULL) {
ERR_print_errors(bio_err);
goto end;
}
} else
# endif
{
if (informat == FORMAT_ASN1)
dh = d2i_DHparams_bio(in, NULL);
else /* informat == FORMAT_PEM */
dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
if (dh == NULL) {
BIO_printf(bio_err, "unable to load DH parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
/* dh != NULL */
}
out = bio_open_default(outfile, 'w', outformat);
if (out == NULL)
goto end;
if (text) {
DHparams_print(out, dh);
}
if (check) {
if (!DH_check(dh, &i)) {
ERR_print_errors(bio_err);
goto end;
}
if (i & DH_CHECK_P_NOT_PRIME)
printf("p value is not prime\n");
if (i & DH_CHECK_P_NOT_SAFE_PRIME)
printf("p value is not a safe prime\n");
if (i & DH_UNABLE_TO_CHECK_GENERATOR)
printf("unable to check the generator value\n");
if (i & DH_NOT_SUITABLE_GENERATOR)
printf("the g value is not a generator\n");
if (i == 0)
printf("DH parameters appear to be ok.\n");
}
if (C) {
unsigned char *data;
int len, bits;
len = BN_num_bytes(dh->p);
bits = BN_num_bits(dh->p);
data = app_malloc(len, "print a BN");
BIO_printf(out, "#ifndef HEADER_DH_H\n"
"# include <openssl/dh.h>\n"
"#endif\n"
"\n");
BIO_printf(out, "DH *get_dh%d()\n{\n", bits);
print_bignum_var(out, dh->p, "dhp", bits, data);
print_bignum_var(out, dh->g, "dhg", bits, data);
BIO_printf(out, " DH *dh = DN_new();\n"
"\n"
" if (dh == NULL)\n"
" return NULL;\n");
BIO_printf(out, " dh->p = BN_bin2bn(dhp_%d, sizeof (dhp_%d), NULL);\n",
bits, bits);
BIO_printf(out, " dh->g = BN_bin2bn(dhg_%d, sizeof (dhg_%d), NULL);\n",
bits, bits);
BIO_printf(out, " if (!dh->p || !dh->g) {\n"
" DH_free(dh);\n"
" return NULL;\n"
" }\n");
if (dh->length)
BIO_printf(out,
" dh->length = %ld;\n", dh->length);
BIO_printf(out, " return dh;\n}\n");
OPENSSL_free(data);
}
if (!noout) {
if (outformat == FORMAT_ASN1)
i = i2d_DHparams_bio(out, dh);
else if (dh->q)
i = PEM_write_bio_DHxparams(out, dh);
else
i = PEM_write_bio_DHparams(out, dh);
if (!i) {
BIO_printf(bio_err, "unable to write DH parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
ret = 0;
end:
BIO_free(in);
BIO_free_all(out);
DH_free(dh);
return (ret);
}
int dsaparam_main(int argc, char **argv)
{
DSA *dsa = NULL;
BIO *in = NULL, *out = NULL;
BN_GENCB *cb = NULL;
int numbits = -1, num, genkey = 0, need_rand = 0, non_fips_allow = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, noout = 0, C = 0, ret =
1;
int i, text = 0;
# ifdef GENCB_TEST
int timebomb = 0;
# endif
char *infile = NULL, *outfile = NULL, *prog, *inrand = NULL;
OPTION_CHOICE o;
prog = opt_init(argc, argv, dsaparam_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(dsaparam_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_ENGINE:
(void)setup_engine(opt_arg(), 0);
break;
case OPT_TIMEBOMB:
# ifdef GENCB_TEST
timebomb = atoi(opt_arg());
break;
# endif
case OPT_TEXT:
text = 1;
break;
case OPT_C:
C = 1;
break;
case OPT_GENKEY:
genkey = need_rand = 1;
break;
case OPT_RAND:
inrand = opt_arg();
need_rand = 1;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_NON_FIPS_ALLOW:
non_fips_allow = 1;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argc == 1) {
if (!opt_int(argv[0], &num))
goto end;
/* generate a key */
numbits = num;
need_rand = 1;
}
in = bio_open_default(infile, "r");
if (in == NULL)
goto end;
out = bio_open_default(outfile, "w");
if (out == NULL)
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 (numbits > 0) {
cb = BN_GENCB_new();
if (!cb) {
BIO_printf(bio_err, "Error allocating BN_GENCB object\n");
goto end;
}
BN_GENCB_set(cb, dsa_cb, bio_err);
assert(need_rand);
dsa = DSA_new();
if (!dsa) {
BIO_printf(bio_err, "Error allocating DSA object\n");
goto end;
}
if (non_fips_allow)
dsa->flags |= DSA_FLAG_NON_FIPS_ALLOW;
BIO_printf(bio_err, "Generating DSA parameters, %d bit long prime\n",
num);
BIO_printf(bio_err, "This could take some time\n");
# ifdef GENCB_TEST
if (timebomb > 0) {
struct sigaction act;
act.sa_handler = timebomb_sigalarm;
act.sa_flags = 0;
BIO_printf(bio_err,
"(though I'll stop it if not done within %d secs)\n",
timebomb);
if (sigaction(SIGALRM, &act, NULL) != 0) {
BIO_printf(bio_err, "Error, couldn't set SIGALRM handler\n");
goto end;
}
alarm(timebomb);
}
# endif
if (!DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL, cb)) {
# ifdef GENCB_TEST
if (stop_keygen_flag) {
BIO_printf(bio_err, "DSA key generation time-stopped\n");
/* This is an asked-for behaviour! */
ret = 0;
goto end;
}
# endif
ERR_print_errors(bio_err);
BIO_printf(bio_err, "Error, DSA key generation failed\n");
goto end;
}
} else if (informat == FORMAT_ASN1)
dsa = d2i_DSAparams_bio(in, NULL);
else
dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
if (text) {
DSAparams_print(out, dsa);
}
if (C) {
unsigned char *data;
int len, bits_p;
len = BN_num_bytes(dsa->p);
bits_p = BN_num_bits(dsa->p);
data = (unsigned char *)OPENSSL_malloc(len + 20);
if (data == NULL) {
perror("OPENSSL_malloc");
goto end;
}
BIO_printf(bio_out, "DSA *get_dsa%d()\n{\n", bits_p);
print_bignum_var(bio_out, dsa->p, "dsap", len, data);
print_bignum_var(bio_out, dsa->q, "dsaq", len, data);
print_bignum_var(bio_out, dsa->g, "dsag", len, data);
BIO_printf(bio_out, " DSA *dsa = DSA_new();\n"
"\n");
BIO_printf(bio_out, " if (dsa == NULL)\n"
" return NULL;\n");
BIO_printf(bio_out, " dsa->p = BN_bin2bn(dsap_%d, sizeof (dsap_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " dsa->q = BN_bin2bn(dsaq_%d, sizeof (dsaq_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " dsa->g = BN_bin2bn(dsag_%d, sizeof (dsag_%d), NULL);\n",
bits_p, bits_p);
BIO_printf(bio_out, " if (!dsa->p || !dsa->q || !dsa->g) {\n"
" DSA_free(dsa);\n"
" return NULL;\n"
" }\n"
" return(dsa);\n}\n");
}
if (!noout) {
if (outformat == FORMAT_ASN1)
i = i2d_DSAparams_bio(out, dsa);
else
i = PEM_write_bio_DSAparams(out, dsa);
if (!i) {
BIO_printf(bio_err, "unable to write DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
if (genkey) {
DSA *dsakey;
assert(need_rand);
if ((dsakey = DSAparams_dup(dsa)) == NULL)
goto end;
if (non_fips_allow)
dsakey->flags |= DSA_FLAG_NON_FIPS_ALLOW;
if (!DSA_generate_key(dsakey)) {
ERR_print_errors(bio_err);
DSA_free(dsakey);
goto end;
}
if (outformat == FORMAT_ASN1)
i = i2d_DSAPrivateKey_bio(out, dsakey);
else
i = PEM_write_bio_DSAPrivateKey(out, dsakey, NULL, NULL, 0, NULL,
NULL);
DSA_free(dsakey);
}
if (need_rand)
app_RAND_write_file(NULL);
ret = 0;
end:
if (cb != NULL)
BN_GENCB_free(cb);
BIO_free(in);
BIO_free_all(out);
DSA_free(dsa);
return (ret);
}
int dhparam_main(int argc, char **argv)
{
BIO *in = NULL, *out = NULL;
DH *dh = NULL;
char *infile = NULL, *outfile = NULL, *prog;
ENGINE *e = NULL;
#ifndef OPENSSL_NO_DSA
int dsaparam = 0;
#endif
int i, text = 0, C = 0, ret = 1, num = 0, g = 0;
int informat = FORMAT_PEM, outformat = FORMAT_PEM, check = 0, noout = 0;
OPTION_CHOICE o;
prog = opt_init(argc, argv, dhparam_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(dhparam_options);
ret = 0;
goto end;
case OPT_INFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &informat))
goto opthelp;
break;
case OPT_OUTFORM:
if (!opt_format(opt_arg(), OPT_FMT_PEMDER, &outformat))
goto opthelp;
break;
case OPT_IN:
infile = opt_arg();
break;
case OPT_OUT:
outfile = opt_arg();
break;
case OPT_ENGINE:
e = setup_engine(opt_arg(), 0);
break;
case OPT_CHECK:
check = 1;
break;
case OPT_TEXT:
text = 1;
break;
case OPT_DSAPARAM:
#ifndef OPENSSL_NO_DSA
dsaparam = 1;
#endif
break;
case OPT_C:
C = 1;
break;
case OPT_2:
g = 2;
break;
case OPT_5:
g = 5;
break;
case OPT_NOOUT:
noout = 1;
break;
case OPT_R_CASES:
if (!opt_rand(o))
goto end;
break;
}
}
argc = opt_num_rest();
argv = opt_rest();
if (argv[0] != NULL && (!opt_int(argv[0], &num) || num <= 0))
goto end;
if (g && !num)
num = DEFBITS;
# ifndef OPENSSL_NO_DSA
if (dsaparam && g) {
BIO_printf(bio_err,
"generator may not be chosen for DSA parameters\n");
goto end;
}
# endif
out = bio_open_default(outfile, 'w', outformat);
if (out == NULL)
goto end;
/* DH parameters */
if (num && !g)
g = 2;
if (num) {
BN_GENCB *cb;
cb = BN_GENCB_new();
if (cb == NULL) {
ERR_print_errors(bio_err);
goto end;
}
BN_GENCB_set(cb, dh_cb, bio_err);
# ifndef OPENSSL_NO_DSA
if (dsaparam) {
DSA *dsa = DSA_new();
BIO_printf(bio_err,
"Generating DSA parameters, %d bit long prime\n", num);
if (dsa == NULL
|| !DSA_generate_parameters_ex(dsa, num, NULL, 0, NULL, NULL,
cb)) {
DSA_free(dsa);
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
if (dh == NULL) {
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
} else
# endif
{
dh = DH_new();
BIO_printf(bio_err,
"Generating DH parameters, %d bit long safe prime, generator %d\n",
num, g);
BIO_printf(bio_err, "This is going to take a long time\n");
if (dh == NULL || !DH_generate_parameters_ex(dh, num, g, cb)) {
BN_GENCB_free(cb);
ERR_print_errors(bio_err);
goto end;
}
}
BN_GENCB_free(cb);
} else {
in = bio_open_default(infile, 'r', informat);
if (in == NULL)
goto end;
# ifndef OPENSSL_NO_DSA
if (dsaparam) {
DSA *dsa;
if (informat == FORMAT_ASN1)
dsa = d2i_DSAparams_bio(in, NULL);
else /* informat == FORMAT_PEM */
dsa = PEM_read_bio_DSAparams(in, NULL, NULL, NULL);
if (dsa == NULL) {
BIO_printf(bio_err, "unable to load DSA parameters\n");
ERR_print_errors(bio_err);
goto end;
}
dh = DSA_dup_DH(dsa);
DSA_free(dsa);
if (dh == NULL) {
ERR_print_errors(bio_err);
goto end;
}
} else
# endif
{
if (informat == FORMAT_ASN1) {
/*
* We have no PEM header to determine what type of DH params it
* is. We'll just try both.
*/
dh = d2i_DHparams_bio(in, NULL);
/* BIO_reset() returns 0 for success for file BIOs only!!! */
if (dh == NULL && BIO_reset(in) == 0)
dh = d2i_DHxparams_bio(in, NULL);
} else {
/* informat == FORMAT_PEM */
dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
}
if (dh == NULL) {
BIO_printf(bio_err, "unable to load DH parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
/* dh != NULL */
}
if (text) {
DHparams_print(out, dh);
}
if (check) {
if (!DH_check(dh, &i)) {
ERR_print_errors(bio_err);
goto end;
}
if (i & DH_CHECK_P_NOT_PRIME)
BIO_printf(bio_err, "WARNING: p value is not prime\n");
if (i & DH_CHECK_P_NOT_SAFE_PRIME)
BIO_printf(bio_err, "WARNING: p value is not a safe prime\n");
if (i & DH_CHECK_Q_NOT_PRIME)
BIO_printf(bio_err, "WARNING: q value is not a prime\n");
if (i & DH_CHECK_INVALID_Q_VALUE)
BIO_printf(bio_err, "WARNING: q value is invalid\n");
if (i & DH_CHECK_INVALID_J_VALUE)
BIO_printf(bio_err, "WARNING: j value is invalid\n");
if (i & DH_UNABLE_TO_CHECK_GENERATOR)
BIO_printf(bio_err,
"WARNING: unable to check the generator value\n");
if (i & DH_NOT_SUITABLE_GENERATOR)
BIO_printf(bio_err, "WARNING: the g value is not a generator\n");
if (i == 0)
BIO_printf(bio_err, "DH parameters appear to be ok.\n");
if (num != 0 && i != 0) {
/*
* We have generated parameters but DH_check() indicates they are
* invalid! This should never happen!
*/
BIO_printf(bio_err, "ERROR: Invalid parameters generated\n");
goto end;
}
}
if (C) {
unsigned char *data;
int len, bits;
const BIGNUM *pbn, *gbn;
len = DH_size(dh);
bits = DH_bits(dh);
DH_get0_pqg(dh, &pbn, NULL, &gbn);
data = app_malloc(len, "print a BN");
BIO_printf(out, "static DH *get_dh%d(void)\n{\n", bits);
print_bignum_var(out, pbn, "dhp", bits, data);
print_bignum_var(out, gbn, "dhg", bits, data);
BIO_printf(out, " DH *dh = DH_new();\n"
" BIGNUM *p, *g;\n"
"\n"
" if (dh == NULL)\n"
" return NULL;\n");
BIO_printf(out, " p = BN_bin2bn(dhp_%d, sizeof(dhp_%d), NULL);\n",
bits, bits);
BIO_printf(out, " g = BN_bin2bn(dhg_%d, sizeof(dhg_%d), NULL);\n",
bits, bits);
BIO_printf(out, " if (p == NULL || g == NULL\n"
" || !DH_set0_pqg(dh, p, NULL, g)) {\n"
" DH_free(dh);\n"
" BN_free(p);\n"
" BN_free(g);\n"
" return NULL;\n"
" }\n");
if (DH_get_length(dh) > 0)
BIO_printf(out,
" if (!DH_set_length(dh, %ld)) {\n"
" DH_free(dh);\n"
" return NULL;\n"
" }\n", DH_get_length(dh));
BIO_printf(out, " return dh;\n}\n");
OPENSSL_free(data);
}
if (!noout) {
const BIGNUM *q;
DH_get0_pqg(dh, NULL, &q, NULL);
if (outformat == FORMAT_ASN1) {
if (q != NULL)
i = i2d_DHxparams_bio(out, dh);
else
i = i2d_DHparams_bio(out, dh);
} else if (q != NULL) {
i = PEM_write_bio_DHxparams(out, dh);
} else {
i = PEM_write_bio_DHparams(out, dh);
}
if (!i) {
BIO_printf(bio_err, "unable to write DH parameters\n");
ERR_print_errors(bio_err);
goto end;
}
}
ret = 0;
end:
BIO_free(in);
BIO_free_all(out);
DH_free(dh);
release_engine(e);
return ret;
}
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);
}
