diff options
Diffstat (limited to 'openssl/crypto/ecdsa/ecdsatest.c')
| -rw-r--r-- | openssl/crypto/ecdsa/ecdsatest.c | 500 |
1 files changed, 500 insertions, 0 deletions
diff --git a/openssl/crypto/ecdsa/ecdsatest.c b/openssl/crypto/ecdsa/ecdsatest.c new file mode 100644 index 000000000..b07e31252 --- /dev/null +++ b/openssl/crypto/ecdsa/ecdsatest.c @@ -0,0 +1,500 @@ +/* crypto/ecdsa/ecdsatest.c */ +/* + * Written by Nils Larsch for the OpenSSL project. + */ +/* ==================================================================== + * Copyright (c) 2000-2005 The OpenSSL Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * + * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * licensing@OpenSSL.org. + * + * 5. Products derived from this software may not be called "OpenSSL" + * nor may "OpenSSL" appear in their names without prior written + * permission of the OpenSSL Project. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the OpenSSL Project + * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" + * + * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ +/* ==================================================================== + * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED. + * + * Portions of the attached software ("Contribution") are developed by + * SUN MICROSYSTEMS, INC., and are contributed to the OpenSSL project. + * + * The Contribution is licensed pursuant to the OpenSSL open source + * license provided above. + * + * The elliptic curve binary polynomial software is originally written by + * Sheueling Chang Shantz and Douglas Stebila of Sun Microsystems Laboratories. + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <openssl/opensslconf.h> /* To see if OPENSSL_NO_ECDSA is defined */ + +#ifdef OPENSSL_NO_ECDSA +int main(int argc, char * argv[]) + { + puts("Elliptic curves are disabled."); + return 0; + } +#else + +#include <openssl/crypto.h> +#include <openssl/bio.h> +#include <openssl/evp.h> +#include <openssl/bn.h> +#include <openssl/ecdsa.h> +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif +#include <openssl/err.h> +#include <openssl/rand.h> + +static const char rnd_seed[] = "string to make the random number generator " + "think it has entropy"; + +/* declaration of the test functions */ +int x9_62_tests(BIO *); +int x9_62_test_internal(BIO *out, int nid, const char *r, const char *s); +int test_builtin(BIO *); + +/* functions to change the RAND_METHOD */ +int change_rand(void); +int restore_rand(void); +int fbytes(unsigned char *buf, int num); + +RAND_METHOD fake_rand; +const RAND_METHOD *old_rand; + +int change_rand(void) + { + /* save old rand method */ + if ((old_rand = RAND_get_rand_method()) == NULL) + return 0; + + fake_rand.seed = old_rand->seed; + fake_rand.cleanup = old_rand->cleanup; + fake_rand.add = old_rand->add; + fake_rand.status = old_rand->status; + /* use own random function */ + fake_rand.bytes = fbytes; + fake_rand.pseudorand = old_rand->bytes; + /* set new RAND_METHOD */ + if (!RAND_set_rand_method(&fake_rand)) + return 0; + return 1; + } + +int restore_rand(void) + { + if (!RAND_set_rand_method(old_rand)) + return 0; + else + return 1; + } + +static int fbytes_counter = 0; +static const char *numbers[8] = { + "651056770906015076056810763456358567190100156695615665659", + "6140507067065001063065065565667405560006161556565665656654", + "8763001015071075675010661307616710783570106710677817767166" + "71676178726717", + "7000000175690566466555057817571571075705015757757057795755" + "55657156756655", + "1275552191113212300012030439187146164646146646466749494799", + "1542725565216523985789236956265265265235675811949404040041", + "1456427555219115346513212300075341203043918714616464614664" + "64667494947990", + "1712787255652165239672857892369562652652652356758119494040" + "40041670216363"}; + +int fbytes(unsigned char *buf, int num) + { + int ret; + BIGNUM *tmp = NULL; + + if (fbytes_counter >= 8) + return 0; + tmp = BN_new(); + if (!tmp) + return 0; + if (!BN_dec2bn(&tmp, numbers[fbytes_counter])) + { + BN_free(tmp); + return 0; + } + fbytes_counter ++; + ret = BN_bn2bin(tmp, buf); + if (ret == 0 || ret != num) + ret = 0; + else + ret = 1; + if (tmp) + BN_free(tmp); + return ret; + } + +/* some tests from the X9.62 draft */ +int x9_62_test_internal(BIO *out, int nid, const char *r_in, const char *s_in) + { + int ret = 0; + const char message[] = "abc"; + unsigned char digest[20]; + unsigned int dgst_len = 0; + EVP_MD_CTX md_ctx; + EC_KEY *key = NULL; + ECDSA_SIG *signature = NULL; + BIGNUM *r = NULL, *s = NULL; + + EVP_MD_CTX_init(&md_ctx); + /* get the message digest */ + EVP_DigestInit(&md_ctx, EVP_ecdsa()); + EVP_DigestUpdate(&md_ctx, (const void*)message, 3); + EVP_DigestFinal(&md_ctx, digest, &dgst_len); + + BIO_printf(out, "testing %s: ", OBJ_nid2sn(nid)); + /* create the key */ + if ((key = EC_KEY_new_by_curve_name(nid)) == NULL) + goto x962_int_err; + if (!EC_KEY_generate_key(key)) + goto x962_int_err; + BIO_printf(out, "."); + (void)BIO_flush(out); + /* create the signature */ + signature = ECDSA_do_sign(digest, 20, key); + if (signature == NULL) + goto x962_int_err; + BIO_printf(out, "."); + (void)BIO_flush(out); + /* compare the created signature with the expected signature */ + if ((r = BN_new()) == NULL || (s = BN_new()) == NULL) + goto x962_int_err; + if (!BN_dec2bn(&r, r_in) || + !BN_dec2bn(&s, s_in)) + goto x962_int_err; + if (BN_cmp(signature->r ,r) || BN_cmp(signature->s, s)) + goto x962_int_err; + BIO_printf(out, "."); + (void)BIO_flush(out); + /* verify the signature */ + if (ECDSA_do_verify(digest, 20, signature, key) != 1) + goto x962_int_err; + BIO_printf(out, "."); + (void)BIO_flush(out); + + BIO_printf(out, " ok\n"); + ret = 1; +x962_int_err: + if (!ret) + BIO_printf(out, " failed\n"); + if (key) + EC_KEY_free(key); + if (signature) + ECDSA_SIG_free(signature); + if (r) + BN_free(r); + if (s) + BN_free(s); + EVP_MD_CTX_cleanup(&md_ctx); + return ret; + } + +int x9_62_tests(BIO *out) + { + int ret = 0; + + BIO_printf(out, "some tests from X9.62:\n"); + + /* set own rand method */ + if (!change_rand()) + goto x962_err; + + if (!x9_62_test_internal(out, NID_X9_62_prime192v1, + "3342403536405981729393488334694600415596881826869351677613", + "5735822328888155254683894997897571951568553642892029982342")) + goto x962_err; + if (!x9_62_test_internal(out, NID_X9_62_prime239v1, + "3086361431751678114926225473006680188549593787585317781474" + "62058306432176", + "3238135532097973577080787768312505059318910517550078427819" + "78505179448783")) + goto x962_err; + if (!x9_62_test_internal(out, NID_X9_62_c2tnb191v1, + "87194383164871543355722284926904419997237591535066528048", + "308992691965804947361541664549085895292153777025772063598")) + goto x962_err; + if (!x9_62_test_internal(out, NID_X9_62_c2tnb239v1, + "2159633321041961198501834003903461262881815148684178964245" + "5876922391552", + "1970303740007316867383349976549972270528498040721988191026" + "49413465737174")) + goto x962_err; + + ret = 1; +x962_err: + if (!restore_rand()) + ret = 0; + return ret; + } + +int test_builtin(BIO *out) + { + EC_builtin_curve *curves = NULL; + size_t crv_len = 0, n = 0; + EC_KEY *eckey = NULL, *wrong_eckey = NULL; + EC_GROUP *group; + unsigned char digest[20], wrong_digest[20]; + unsigned char *signature = NULL; + unsigned int sig_len; + int nid, ret = 0; + + /* fill digest values with some random data */ + if (!RAND_pseudo_bytes(digest, 20) || + !RAND_pseudo_bytes(wrong_digest, 20)) + { + BIO_printf(out, "ERROR: unable to get random data\n"); + goto builtin_err; + } + + /* create and verify a ecdsa signature with every availble curve + * (with ) */ + BIO_printf(out, "\ntesting ECDSA_sign() and ECDSA_verify() " + "with some internal curves:\n"); + + /* get a list of all internal curves */ + crv_len = EC_get_builtin_curves(NULL, 0); + + curves = OPENSSL_malloc(sizeof(EC_builtin_curve) * crv_len); + + if (curves == NULL) + { + BIO_printf(out, "malloc error\n"); + goto builtin_err; + } + + if (!EC_get_builtin_curves(curves, crv_len)) + { + BIO_printf(out, "unable to get internal curves\n"); + goto builtin_err; + } + + /* now create and verify a signature for every curve */ + for (n = 0; n < crv_len; n++) + { + unsigned char dirt, offset; + + nid = curves[n].nid; + if (nid == NID_ipsec4) + continue; + /* create new ecdsa key (== EC_KEY) */ + if ((eckey = EC_KEY_new()) == NULL) + goto builtin_err; + group = EC_GROUP_new_by_curve_name(nid); + if (group == NULL) + goto builtin_err; + if (EC_KEY_set_group(eckey, group) == 0) + goto builtin_err; + EC_GROUP_free(group); + if (EC_GROUP_get_degree(EC_KEY_get0_group(eckey)) < 160) + /* drop the curve */ + { + EC_KEY_free(eckey); + eckey = NULL; + continue; + } + BIO_printf(out, "%s: ", OBJ_nid2sn(nid)); + /* create key */ + if (!EC_KEY_generate_key(eckey)) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + /* create second key */ + if ((wrong_eckey = EC_KEY_new()) == NULL) + goto builtin_err; + group = EC_GROUP_new_by_curve_name(nid); + if (group == NULL) + goto builtin_err; + if (EC_KEY_set_group(wrong_eckey, group) == 0) + goto builtin_err; + EC_GROUP_free(group); + if (!EC_KEY_generate_key(wrong_eckey)) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + + BIO_printf(out, "."); + (void)BIO_flush(out); + /* check key */ + if (!EC_KEY_check_key(eckey)) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + /* create signature */ + sig_len = ECDSA_size(eckey); + if ((signature = OPENSSL_malloc(sig_len)) == NULL) + goto builtin_err; + if (!ECDSA_sign(0, digest, 20, signature, &sig_len, eckey)) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + /* verify signature */ + if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) != 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + /* verify signature with the wrong key */ + if (ECDSA_verify(0, digest, 20, signature, sig_len, + wrong_eckey) == 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + /* wrong digest */ + if (ECDSA_verify(0, wrong_digest, 20, signature, sig_len, + eckey) == 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + /* modify a single byte of the signature */ + offset = signature[10] % sig_len; + dirt = signature[11]; + signature[offset] ^= dirt ? dirt : 1; + if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1) + { + BIO_printf(out, " failed\n"); + goto builtin_err; + } + BIO_printf(out, "."); + (void)BIO_flush(out); + + BIO_printf(out, " ok\n"); + /* cleanup */ + OPENSSL_free(signature); + signature = NULL; + EC_KEY_free(eckey); + eckey = NULL; + EC_KEY_free(wrong_eckey); + wrong_eckey = NULL; + } + + ret = 1; +builtin_err: + if (eckey) + EC_KEY_free(eckey); + if (wrong_eckey) + EC_KEY_free(wrong_eckey); + if (signature) + OPENSSL_free(signature); + if (curves) + OPENSSL_free(curves); + + return ret; + } + +int main(void) + { + int ret = 1; + BIO *out; + + out = BIO_new_fp(stdout, BIO_NOCLOSE); + + /* enable memory leak checking unless explicitly disabled */ + if (!((getenv("OPENSSL_DEBUG_MEMORY") != NULL) && + (0 == strcmp(getenv("OPENSSL_DEBUG_MEMORY"), "off")))) + { + CRYPTO_malloc_debug_init(); + CRYPTO_set_mem_debug_options(V_CRYPTO_MDEBUG_ALL); + } + else + { + /* OPENSSL_DEBUG_MEMORY=off */ + CRYPTO_set_mem_debug_functions(0, 0, 0, 0, 0); + } + CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON); + + ERR_load_crypto_strings(); + + /* initialize the prng */ + RAND_seed(rnd_seed, sizeof(rnd_seed)); + + /* the tests */ + if (!x9_62_tests(out)) goto err; + if (!test_builtin(out)) goto err; + + ret = 0; +err: + if (ret) + BIO_printf(out, "\nECDSA test failed\n"); + else + BIO_printf(out, "\nECDSA test passed\n"); + if (ret) + ERR_print_errors(out); + CRYPTO_cleanup_all_ex_data(); + ERR_remove_state(0); + ERR_free_strings(); + CRYPTO_mem_leaks(out); + if (out != NULL) + BIO_free(out); + return ret; + } +#endif |