mirror of
https://github.com/openssl/openssl.git
synced 2024-12-15 06:01:37 +08:00
23ccae80bd
Reviewed-by: Nicola Tuveri <nic.tuv@gmail.com> Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> (Merged from https://github.com/openssl/openssl/pull/11928)
472 lines
15 KiB
C
472 lines
15 KiB
C
/*
|
|
* Copyright 2002-2020 The OpenSSL Project Authors. All Rights Reserved.
|
|
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
|
|
*
|
|
* Licensed under the Apache License 2.0 (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
#include <openssl/opensslconf.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include <string.h>
|
|
#include "apps.h"
|
|
#include "progs.h"
|
|
#include <openssl/bio.h>
|
|
#include <openssl/err.h>
|
|
#include <openssl/bn.h>
|
|
#include <openssl/ec.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/pem.h>
|
|
|
|
typedef enum OPTION_choice {
|
|
OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
|
|
OPT_INFORM, OPT_OUTFORM, OPT_IN, OPT_OUT, OPT_TEXT, OPT_C,
|
|
OPT_CHECK, OPT_LIST_CURVES, OPT_NO_SEED, OPT_NOOUT, OPT_NAME,
|
|
OPT_CONV_FORM, OPT_PARAM_ENC, OPT_GENKEY, OPT_ENGINE, OPT_CHECK_NAMED,
|
|
OPT_R_ENUM, OPT_PROV_ENUM
|
|
} OPTION_CHOICE;
|
|
|
|
const OPTIONS ecparam_options[] = {
|
|
OPT_SECTION("General"),
|
|
{"help", OPT_HELP, '-', "Display this summary"},
|
|
{"list_curves", OPT_LIST_CURVES, '-',
|
|
"Prints a list of all curve 'short names'"},
|
|
#ifndef OPENSSL_NO_ENGINE
|
|
{"engine", OPT_ENGINE, 's', "Use engine, possibly a hardware device"},
|
|
#endif
|
|
|
|
{"genkey", OPT_GENKEY, '-', "Generate ec key"},
|
|
{"in", OPT_IN, '<', "Input file - default stdin"},
|
|
{"inform", OPT_INFORM, 'F', "Input format - default PEM (DER or PEM)"},
|
|
{"out", OPT_OUT, '>', "Output file - default stdout"},
|
|
{"outform", OPT_OUTFORM, 'F', "Output format - default PEM"},
|
|
|
|
OPT_SECTION("Output"),
|
|
{"text", OPT_TEXT, '-', "Print the ec parameters in text form"},
|
|
{"C", OPT_C, '-', "Print a 'C' function creating the parameters"},
|
|
{"noout", OPT_NOOUT, '-', "Do not print the ec parameter"},
|
|
{"param_enc", OPT_PARAM_ENC, 's',
|
|
"Specifies the way the ec parameters are encoded"},
|
|
|
|
OPT_SECTION("Parameter"),
|
|
{"check", OPT_CHECK, '-', "Validate the ec parameters"},
|
|
{"check_named", OPT_CHECK_NAMED, '-',
|
|
"Check that named EC curve parameters have not been modified"},
|
|
{"no_seed", OPT_NO_SEED, '-',
|
|
"If 'explicit' parameters are chosen do not use the seed"},
|
|
{"name", OPT_NAME, 's',
|
|
"Use the ec parameters with specified 'short name'"},
|
|
{"conv_form", OPT_CONV_FORM, 's', "Specifies the point conversion form "},
|
|
|
|
OPT_R_OPTIONS,
|
|
OPT_PROV_OPTIONS,
|
|
{NULL}
|
|
};
|
|
|
|
static OPT_PAIR forms[] = {
|
|
{"compressed", POINT_CONVERSION_COMPRESSED},
|
|
{"uncompressed", POINT_CONVERSION_UNCOMPRESSED},
|
|
{"hybrid", POINT_CONVERSION_HYBRID},
|
|
{NULL}
|
|
};
|
|
|
|
static OPT_PAIR encodings[] = {
|
|
{"named_curve", OPENSSL_EC_NAMED_CURVE},
|
|
{"explicit", 0},
|
|
{NULL}
|
|
};
|
|
|
|
int ecparam_main(int argc, char **argv)
|
|
{
|
|
ENGINE *e = NULL;
|
|
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;
|
|
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;
|
|
int ret = 1, private = 0;
|
|
int list_curves = 0, no_seed = 0, check = 0, new_form = 0;
|
|
int text = 0, i, genkey = 0, check_named = 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_CHECK_NAMED:
|
|
check_named = 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 = 1;
|
|
break;
|
|
case OPT_R_CASES:
|
|
if (!opt_rand(o))
|
|
goto end;
|
|
break;
|
|
case OPT_PROV_CASES:
|
|
if (!opt_provider(o))
|
|
goto end;
|
|
break;
|
|
case OPT_ENGINE:
|
|
e = setup_engine(opt_arg(), 0);
|
|
break;
|
|
}
|
|
}
|
|
argc = opt_num_rest();
|
|
if (argc != 0)
|
|
goto opthelp;
|
|
|
|
private = genkey ? 1 : 0;
|
|
|
|
in = bio_open_default(infile, 'r', informat);
|
|
if (in == NULL)
|
|
goto end;
|
|
out = bio_open_owner(outfile, outformat, private);
|
|
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_named) {
|
|
BIO_printf(bio_err, "validating named elliptic curve parameters: ");
|
|
if (EC_GROUP_check_named_curve(group, 0, NULL) <= 0) {
|
|
BIO_printf(bio_err, "failed\n");
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
BIO_printf(bio_err, "ok\n");
|
|
}
|
|
|
|
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;
|
|
|
|
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_GROUP_get_field_type(group) == 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(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 (outformat == FORMAT_ASN1 && genkey)
|
|
noout = 1;
|
|
|
|
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 (genkey) {
|
|
EC_KEY *eckey = EC_KEY_new();
|
|
|
|
if (eckey == NULL)
|
|
goto end;
|
|
|
|
if (EC_KEY_set_group(eckey, group) == 0) {
|
|
BIO_printf(bio_err, "unable to set group when generating key\n");
|
|
EC_KEY_free(eckey);
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
|
|
if (new_form)
|
|
EC_KEY_set_conv_form(eckey, form);
|
|
|
|
if (!EC_KEY_generate_key(eckey)) {
|
|
BIO_printf(bio_err, "unable to generate key\n");
|
|
EC_KEY_free(eckey);
|
|
ERR_print_errors(bio_err);
|
|
goto end;
|
|
}
|
|
assert(private);
|
|
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);
|
|
}
|
|
|
|
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);
|
|
EC_GROUP_free(group);
|
|
release_engine(e);
|
|
BIO_free(in);
|
|
BIO_free_all(out);
|
|
return ret;
|
|
}
|