--- /dev/null
+/* 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 ++;
+ if (num != BN_num_bytes(tmp) || !BN_bn2bin(tmp, buf))
+ 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;
+#ifndef OPENSSL_NO_EC2M
+ 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;
+#endif
+ 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;
+ ECDSA_SIG *ecdsa_sig = NULL;
+ unsigned char digest[20], wrong_digest[20];
+ unsigned char *signature = NULL;
+ const unsigned char *sig_ptr;
+ unsigned char *sig_ptr2;
+ unsigned char *raw_buf = NULL;
+ unsigned int sig_len, degree, r_len, s_len, bn_len, buf_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);
+ degree = EC_GROUP_get_degree(EC_KEY_get0_group(eckey));
+ if (degree < 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);
+ /* wrong length */
+ if (ECDSA_verify(0, digest, 20, signature, sig_len - 1,
+ eckey) == 1)
+ {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ BIO_printf(out, ".");
+ (void)BIO_flush(out);
+
+ /* Modify a single byte of the signature: to ensure we don't
+ * garble the ASN1 structure, we read the raw signature and
+ * modify a byte in one of the bignums directly. */
+ sig_ptr = signature;
+ if ((ecdsa_sig = d2i_ECDSA_SIG(NULL, &sig_ptr, sig_len)) == NULL)
+ {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+
+ /* Store the two BIGNUMs in raw_buf. */
+ r_len = BN_num_bytes(ecdsa_sig->r);
+ s_len = BN_num_bytes(ecdsa_sig->s);
+ bn_len = (degree + 7) / 8;
+ if ((r_len > bn_len) || (s_len > bn_len))
+ {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ buf_len = 2 * bn_len;
+ if ((raw_buf = OPENSSL_malloc(buf_len)) == NULL)
+ goto builtin_err;
+ /* Pad the bignums with leading zeroes. */
+ memset(raw_buf, 0, buf_len);
+ BN_bn2bin(ecdsa_sig->r, raw_buf + bn_len - r_len);
+ BN_bn2bin(ecdsa_sig->s, raw_buf + buf_len - s_len);
+
+ /* Modify a single byte in the buffer. */
+ offset = raw_buf[10] % buf_len;
+ dirt = raw_buf[11] ? raw_buf[11] : 1;
+ raw_buf[offset] ^= dirt;
+ /* Now read the BIGNUMs back in from raw_buf. */
+ if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
+ (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
+ goto builtin_err;
+
+ sig_ptr2 = signature;
+ sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+ if (ECDSA_verify(0, digest, 20, signature, sig_len, eckey) == 1)
+ {
+ BIO_printf(out, " failed\n");
+ goto builtin_err;
+ }
+ /* Sanity check: undo the modification and verify signature. */
+ raw_buf[offset] ^= dirt;
+ if ((BN_bin2bn(raw_buf, bn_len, ecdsa_sig->r) == NULL) ||
+ (BN_bin2bn(raw_buf + bn_len, bn_len, ecdsa_sig->s) == NULL))
+ goto builtin_err;
+
+ sig_ptr2 = signature;
+ sig_len = i2d_ECDSA_SIG(ecdsa_sig, &sig_ptr2);
+ 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 */
+ /* clean bogus errors */
+ ERR_clear_error();
+ OPENSSL_free(signature);
+ signature = NULL;
+ EC_KEY_free(eckey);
+ eckey = NULL;
+ EC_KEY_free(wrong_eckey);
+ wrong_eckey = NULL;
+ ECDSA_SIG_free(ecdsa_sig);
+ ecdsa_sig = NULL;
+ OPENSSL_free(raw_buf);
+ raw_buf = NULL;
+ }
+
+ ret = 1;
+builtin_err:
+ if (eckey)
+ EC_KEY_free(eckey);
+ if (wrong_eckey)
+ EC_KEY_free(wrong_eckey);
+ if (ecdsa_sig)
+ ECDSA_SIG_free(ecdsa_sig);
+ if (signature)
+ OPENSSL_free(signature);
+ if (raw_buf)
+ OPENSSL_free(raw_buf);
+ 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_thread_state(NULL);
+ ERR_free_strings();
+ CRYPTO_mem_leaks(out);
+ if (out != NULL)
+ BIO_free(out);
+ return ret;
+ }
+#endif
projects / cassiopeia.git / blobdiff