171 lines
3.9 KiB
C
171 lines
3.9 KiB
C
/* $OpenBSD: sm2sigtest.c,v 1.2 2022/11/26 16:08:56 tb Exp $ */
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/*
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* Copyright (c) 2017, 2019 Ribose Inc
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/bio.h>
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#include <openssl/evp.h>
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#include <openssl/bn.h>
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#include <openssl/crypto.h>
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#include <openssl/err.h>
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#include <openssl/rand.h>
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#ifdef OPENSSL_NO_SM2
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int
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main(int argc, char *argv[])
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{
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printf("No SM2 support\n");
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return (0);
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}
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#else
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#include <openssl/sm2.h>
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#include "sm2_local.h"
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static EC_GROUP *
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create_EC_group(const char *p_hex, const char *a_hex, const char *b_hex,
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const char *x_hex, const char *y_hex, const char *order_hex,
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const char *cof_hex)
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{
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BIGNUM *p = NULL;
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BIGNUM *a = NULL;
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BIGNUM *b = NULL;
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BIGNUM *g_x = NULL;
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BIGNUM *g_y = NULL;
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BIGNUM *order = NULL;
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BIGNUM *cof = NULL;
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EC_POINT *generator = NULL;
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EC_GROUP *group = NULL;
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BN_hex2bn(&p, p_hex);
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BN_hex2bn(&a, a_hex);
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BN_hex2bn(&b, b_hex);
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group = EC_GROUP_new_curve_GFp(p, a, b, NULL);
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BN_free(p);
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BN_free(a);
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BN_free(b);
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if (group == NULL)
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return NULL;
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generator = EC_POINT_new(group);
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if (generator == NULL)
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return NULL;
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BN_hex2bn(&g_x, x_hex);
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BN_hex2bn(&g_y, y_hex);
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if (EC_POINT_set_affine_coordinates(group, generator, g_x, g_y,
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NULL) == 0)
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return NULL;
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BN_free(g_x);
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BN_free(g_y);
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BN_hex2bn(&order, order_hex);
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BN_hex2bn(&cof, cof_hex);
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if (EC_GROUP_set_generator(group, generator, order, cof) == 0)
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return NULL;
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EC_POINT_free(generator);
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BN_free(order);
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BN_free(cof);
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return group;
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}
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static int
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test_sm2(const EC_GROUP *group, const char *userid, const char *privkey_hex,
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const char *message)
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{
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const size_t msg_len = strlen(message);
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int ok = -1;
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BIGNUM *priv = NULL;
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EC_POINT *pt = NULL;
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EC_KEY *key = NULL;
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ECDSA_SIG *sig = NULL;
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const BIGNUM *sig_r = NULL;
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const BIGNUM *sig_s = NULL;
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BN_hex2bn(&priv, privkey_hex);
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key = EC_KEY_new();
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EC_KEY_set_group(key, group);
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EC_KEY_set_private_key(key, priv);
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pt = EC_POINT_new(group);
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EC_POINT_mul(group, pt, priv, NULL, NULL, NULL);
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EC_KEY_set_public_key(key, pt);
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sig = sm2_do_sign(key, EVP_sm3(), userid, strlen(userid),
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(const uint8_t *)message, msg_len);
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if (sig == NULL)
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return 0;
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ECDSA_SIG_get0(sig, &sig_r, &sig_s);
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ok = sm2_do_verify(key, EVP_sm3(), sig, userid, strlen(userid),
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(const uint8_t *)message, msg_len);
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ECDSA_SIG_free(sig);
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EC_POINT_free(pt);
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EC_KEY_free(key);
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BN_free(priv);
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return ok;
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}
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int
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main(int argc, char **argv)
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{
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int rc = 0;
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/* From draft-shen-sm2-ecdsa-02 */
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EC_GROUP *test_group =
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create_EC_group
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("8542D69E4C044F18E8B92435BF6FF7DE457283915C45517D722EDB8B08F1DFC3",
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"787968B4FA32C3FD2417842E73BBFEFF2F3C848B6831D7E0EC65228B3937E498",
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"63E4C6D3B23B0C849CF84241484BFE48F61D59A5B16BA06E6E12D1DA27C5249A",
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"421DEBD61B62EAB6746434EBC3CC315E32220B3BADD50BDC4C4E6C147FEDD43D",
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"0680512BCBB42C07D47349D2153B70C4E5D7FDFCBFA36EA1A85841B9E46E09A2",
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"8542D69E4C044F18E8B92435BF6FF7DD297720630485628D5AE74EE7C32E79B7",
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"1");
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if (test_group == NULL)
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return 1;
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rc = test_sm2(test_group, "ALICE123@YAHOO.COM",
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"128B2FA8BD433C6C068C8D803DFF79792A519A55171B1B650C23661D15897263",
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"message digest");
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EC_GROUP_free(test_group);
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if (rc <= 0)
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return 1;
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printf("SUCCESS\n");
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return 0;
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}
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#endif
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