src/regress/lib/libcrypto/ecdh/ecdhtest.c
2023-05-16 22:16:59 +00:00

430 lines
12 KiB
C

/* $OpenBSD: ecdhtest.c,v 1.15 2023/05/16 18:41:18 tb Exp $ */
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
*
* The Elliptic Curve Public-Key Crypto Library (ECC Code) included
* herein is developed by SUN MICROSYSTEMS, INC., and is contributed
* to the OpenSSL project.
*
* The ECC Code is licensed pursuant to the OpenSSL open source
* license provided below.
*
* The ECDH software is originally written by Douglas Stebila of
* Sun Microsystems Laboratories.
*
*/
/* ====================================================================
* Copyright (c) 1998-2003 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
* openssl-core@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).
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <openssl/crypto.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/objects.h>
#include <openssl/sha.h>
#include <openssl/err.h>
#include <openssl/ec.h>
#include <openssl/ecdh.h>
static const int KDF1_SHA1_len = 20;
static void *
KDF1_SHA1(const void *in, size_t inlen, void *out, size_t *outlen)
{
#ifndef OPENSSL_NO_SHA
if (*outlen < SHA_DIGEST_LENGTH)
return NULL;
else
*outlen = SHA_DIGEST_LENGTH;
return SHA1(in, inlen, out);
#else
return NULL;
#endif
}
static int
test_ecdh_curve(int nid, const char *text, BN_CTX *ctx, BIO *out)
{
BIGNUM *x_a = NULL, *y_a = NULL, *x_b = NULL, *y_b = NULL;
EC_KEY *a = NULL, *b = NULL;
const EC_GROUP *group;
unsigned char *abuf = NULL, *bbuf = NULL;
int i, alen, blen, aout, bout, ret = 0;
char buf[12];
a = EC_KEY_new_by_curve_name(nid);
b = EC_KEY_new_by_curve_name(nid);
if (a == NULL || b == NULL)
goto err;
group = EC_KEY_get0_group(a);
if ((x_a = BN_new()) == NULL)
goto err;
if ((y_a = BN_new()) == NULL)
goto err;
if ((x_b = BN_new()) == NULL)
goto err;
if ((y_b = BN_new()) == NULL)
goto err;
BIO_puts(out, "Testing key generation with ");
BIO_puts(out, text);
(void)BIO_flush(out);
if (!EC_KEY_generate_key(a))
goto err;
if (!EC_POINT_get_affine_coordinates(group,
EC_KEY_get0_public_key(a), x_a, y_a, ctx)) goto err;
BIO_printf(out, " .");
(void)BIO_flush(out);
if (!EC_KEY_generate_key(b))
goto err;
if (!EC_POINT_get_affine_coordinates(group,
EC_KEY_get0_public_key(b), x_b, y_b, ctx)) goto err;
BIO_printf(out, ".");
(void)BIO_flush(out);
alen = KDF1_SHA1_len;
if ((abuf = malloc(alen)) == NULL)
goto err;
aout = ECDH_compute_key(abuf, alen, EC_KEY_get0_public_key(b),
a, KDF1_SHA1);
BIO_printf(out, ".");
(void)BIO_flush(out);
blen = KDF1_SHA1_len;
if ((bbuf = malloc(blen)) == NULL)
goto err;
bout = ECDH_compute_key(bbuf, blen, EC_KEY_get0_public_key(a),
b, KDF1_SHA1);
BIO_printf(out, ".");
(void)BIO_flush(out);
if ((aout < 4) || (bout != aout) || (memcmp(abuf, bbuf, aout) != 0)) {
BIO_printf(out, " failed\n\n");
BIO_printf(out, "key a:\n");
BIO_printf(out, "private key: ");
BN_print(out, EC_KEY_get0_private_key(a));
BIO_printf(out, "\n");
BIO_printf(out, "public key (x,y): ");
BN_print(out, x_a);
BIO_printf(out, ",");
BN_print(out, y_a);
BIO_printf(out, "\nkey b:\n");
BIO_printf(out, "private key: ");
BN_print(out, EC_KEY_get0_private_key(b));
BIO_printf(out, "\n");
BIO_printf(out, "public key (x,y): ");
BN_print(out, x_b);
BIO_printf(out, ",");
BN_print(out, y_b);
BIO_printf(out, "\n");
BIO_printf(out, "generated key a: ");
for (i = 0; i < bout; i++) {
snprintf(buf, sizeof buf, "%02X", bbuf[i]);
BIO_puts(out, buf);
}
BIO_printf(out, "\n");
BIO_printf(out, "generated key b: ");
for (i = 0; i < aout; i++) {
snprintf(buf, sizeof buf, "%02X", abuf[i]);
BIO_puts(out, buf);
}
BIO_printf(out, "\n");
fprintf(stderr, "Error in ECDH routines\n");
ret = 0;
} else {
BIO_printf(out, " ok\n");
ret = 1;
}
err:
ERR_print_errors_fp(stderr);
free(abuf);
free(bbuf);
BN_free(x_a);
BN_free(y_a);
BN_free(x_b);
BN_free(y_b);
EC_KEY_free(b);
EC_KEY_free(a);
return (ret);
}
/* Keys and shared secrets from RFC 7027 */
static const unsigned char bp256_da[] = {
0x81, 0xDB, 0x1E, 0xE1, 0x00, 0x15, 0x0F, 0xF2, 0xEA, 0x33, 0x8D, 0x70,
0x82, 0x71, 0xBE, 0x38, 0x30, 0x0C, 0xB5, 0x42, 0x41, 0xD7, 0x99, 0x50,
0xF7, 0x7B, 0x06, 0x30, 0x39, 0x80, 0x4F, 0x1D
};
static const unsigned char bp256_db[] = {
0x55, 0xE4, 0x0B, 0xC4, 0x1E, 0x37, 0xE3, 0xE2, 0xAD, 0x25, 0xC3, 0xC6,
0x65, 0x45, 0x11, 0xFF, 0xA8, 0x47, 0x4A, 0x91, 0xA0, 0x03, 0x20, 0x87,
0x59, 0x38, 0x52, 0xD3, 0xE7, 0xD7, 0x6B, 0xD3
};
static const unsigned char bp256_Z[] = {
0x89, 0xAF, 0xC3, 0x9D, 0x41, 0xD3, 0xB3, 0x27, 0x81, 0x4B, 0x80, 0x94,
0x0B, 0x04, 0x25, 0x90, 0xF9, 0x65, 0x56, 0xEC, 0x91, 0xE6, 0xAE, 0x79,
0x39, 0xBC, 0xE3, 0x1F, 0x3A, 0x18, 0xBF, 0x2B
};
static const unsigned char bp384_da[] = {
0x1E, 0x20, 0xF5, 0xE0, 0x48, 0xA5, 0x88, 0x6F, 0x1F, 0x15, 0x7C, 0x74,
0xE9, 0x1B, 0xDE, 0x2B, 0x98, 0xC8, 0xB5, 0x2D, 0x58, 0xE5, 0x00, 0x3D,
0x57, 0x05, 0x3F, 0xC4, 0xB0, 0xBD, 0x65, 0xD6, 0xF1, 0x5E, 0xB5, 0xD1,
0xEE, 0x16, 0x10, 0xDF, 0x87, 0x07, 0x95, 0x14, 0x36, 0x27, 0xD0, 0x42
};
static const unsigned char bp384_db[] = {
0x03, 0x26, 0x40, 0xBC, 0x60, 0x03, 0xC5, 0x92, 0x60, 0xF7, 0x25, 0x0C,
0x3D, 0xB5, 0x8C, 0xE6, 0x47, 0xF9, 0x8E, 0x12, 0x60, 0xAC, 0xCE, 0x4A,
0xCD, 0xA3, 0xDD, 0x86, 0x9F, 0x74, 0xE0, 0x1F, 0x8B, 0xA5, 0xE0, 0x32,
0x43, 0x09, 0xDB, 0x6A, 0x98, 0x31, 0x49, 0x7A, 0xBA, 0xC9, 0x66, 0x70
};
static const unsigned char bp384_Z[] = {
0x0B, 0xD9, 0xD3, 0xA7, 0xEA, 0x0B, 0x3D, 0x51, 0x9D, 0x09, 0xD8, 0xE4,
0x8D, 0x07, 0x85, 0xFB, 0x74, 0x4A, 0x6B, 0x35, 0x5E, 0x63, 0x04, 0xBC,
0x51, 0xC2, 0x29, 0xFB, 0xBC, 0xE2, 0x39, 0xBB, 0xAD, 0xF6, 0x40, 0x37,
0x15, 0xC3, 0x5D, 0x4F, 0xB2, 0xA5, 0x44, 0x4F, 0x57, 0x5D, 0x4F, 0x42
};
static const unsigned char bp512_da[] = {
0x16, 0x30, 0x2F, 0xF0, 0xDB, 0xBB, 0x5A, 0x8D, 0x73, 0x3D, 0xAB, 0x71,
0x41, 0xC1, 0xB4, 0x5A, 0xCB, 0xC8, 0x71, 0x59, 0x39, 0x67, 0x7F, 0x6A,
0x56, 0x85, 0x0A, 0x38, 0xBD, 0x87, 0xBD, 0x59, 0xB0, 0x9E, 0x80, 0x27,
0x96, 0x09, 0xFF, 0x33, 0x3E, 0xB9, 0xD4, 0xC0, 0x61, 0x23, 0x1F, 0xB2,
0x6F, 0x92, 0xEE, 0xB0, 0x49, 0x82, 0xA5, 0xF1, 0xD1, 0x76, 0x4C, 0xAD,
0x57, 0x66, 0x54, 0x22
};
static const unsigned char bp512_db[] = {
0x23, 0x0E, 0x18, 0xE1, 0xBC, 0xC8, 0x8A, 0x36, 0x2F, 0xA5, 0x4E, 0x4E,
0xA3, 0x90, 0x20, 0x09, 0x29, 0x2F, 0x7F, 0x80, 0x33, 0x62, 0x4F, 0xD4,
0x71, 0xB5, 0xD8, 0xAC, 0xE4, 0x9D, 0x12, 0xCF, 0xAB, 0xBC, 0x19, 0x96,
0x3D, 0xAB, 0x8E, 0x2F, 0x1E, 0xBA, 0x00, 0xBF, 0xFB, 0x29, 0xE4, 0xD7,
0x2D, 0x13, 0xF2, 0x22, 0x45, 0x62, 0xF4, 0x05, 0xCB, 0x80, 0x50, 0x36,
0x66, 0xB2, 0x54, 0x29
};
static const unsigned char bp512_Z[] = {
0xA7, 0x92, 0x70, 0x98, 0x65, 0x5F, 0x1F, 0x99, 0x76, 0xFA, 0x50, 0xA9,
0xD5, 0x66, 0x86, 0x5D, 0xC5, 0x30, 0x33, 0x18, 0x46, 0x38, 0x1C, 0x87,
0x25, 0x6B, 0xAF, 0x32, 0x26, 0x24, 0x4B, 0x76, 0xD3, 0x64, 0x03, 0xC0,
0x24, 0xD7, 0xBB, 0xF0, 0xAA, 0x08, 0x03, 0xEA, 0xFF, 0x40, 0x5D, 0x3D,
0x24, 0xF1, 0x1A, 0x9B, 0x5C, 0x0B, 0xEF, 0x67, 0x9F, 0xE1, 0x45, 0x4B,
0x21, 0xC4, 0xCD, 0x1F
};
/* Given private value and NID, create EC_KEY structure */
static EC_KEY *
mk_eckey(int nid, const unsigned char *p, size_t plen)
{
EC_KEY *k = NULL;
BIGNUM *priv = NULL;
EC_POINT *pub = NULL;
const EC_GROUP *grp;
int ok = 0;
k = EC_KEY_new_by_curve_name(nid);
if (!k)
goto err;
priv = BN_bin2bn(p, plen, NULL);
if (!priv)
goto err;
if (!EC_KEY_set_private_key(k, priv))
goto err;
grp = EC_KEY_get0_group(k);
pub = EC_POINT_new(grp);
if (!pub)
goto err;
if (!EC_POINT_mul(grp, pub, priv, NULL, NULL, NULL))
goto err;
if (!EC_KEY_set_public_key(k, pub))
goto err;
ok = 1;
err:
BN_free(priv);
EC_POINT_free(pub);
if (!ok) {
EC_KEY_free(k);
k = NULL;
}
return (k);
}
/* Known answer test: compute shared secret and check it matches
* expected value.
*/
static int
ecdh_kat(BIO *out, const char *cname, int nid,
const unsigned char *k1, size_t k1_len,
const unsigned char *k2, size_t k2_len,
const unsigned char *Z, size_t Zlen)
{
int rv = 0;
EC_KEY *key1 = NULL, *key2 = NULL;
unsigned char *Ztmp = NULL;
size_t Ztmplen;
BIO_puts(out, "Testing ECDH shared secret with ");
BIO_puts(out, cname);
key1 = mk_eckey(nid, k1, k1_len);
key2 = mk_eckey(nid, k2, k2_len);
if (!key1 || !key2)
goto err;
Ztmplen = ECDH_size(key1);
if (Ztmplen != Zlen)
goto err;
if ((Ztmp = malloc(Ztmplen)) == NULL)
goto err;
if (!ECDH_compute_key(Ztmp, Ztmplen,
EC_KEY_get0_public_key(key2), key1, 0))
goto err;
if (memcmp(Ztmp, Z, Zlen))
goto err;
memset(Ztmp, 0, Zlen);
if (!ECDH_compute_key(Ztmp, Ztmplen,
EC_KEY_get0_public_key(key1), key2, 0))
goto err;
if (memcmp(Ztmp, Z, Zlen))
goto err;
rv = 1;
err:
if (rv)
BIO_puts(out, " ok\n");
else {
fprintf(stderr, "Error in ECDH routines\n");
ERR_print_errors_fp(stderr);
}
EC_KEY_free(key1);
EC_KEY_free(key2);
free(Ztmp);
return rv;
}
#define test_ecdh_kat(bio, curve, bits) \
ecdh_kat(bio, curve, NID_brainpoolP##bits##r1, \
bp##bits##_da, sizeof(bp##bits##_da), \
bp##bits##_db, sizeof(bp##bits##_db), \
bp##bits##_Z, sizeof(bp##bits##_Z))
int
main(int argc, char *argv[])
{
BN_CTX *ctx = NULL;
int ret = 1;
BIO *out;
out = BIO_new(BIO_s_file());
if (out == NULL)
exit(1);
BIO_set_fp(out, stdout, BIO_NOCLOSE);
if ((ctx = BN_CTX_new()) == NULL)
goto err;
/* NIST PRIME CURVES TESTS */
if (!test_ecdh_curve(NID_X9_62_prime192v1, "NIST Prime-Curve P-192",
ctx, out))
goto err;
if (!test_ecdh_curve(NID_secp224r1, "NIST Prime-Curve P-224", ctx, out))
goto err;
if (!test_ecdh_curve(NID_X9_62_prime256v1, "NIST Prime-Curve P-256",
ctx, out))
goto err;
if (!test_ecdh_curve(NID_secp384r1, "NIST Prime-Curve P-384", ctx, out))
goto err;
if (!test_ecdh_curve(NID_secp521r1, "NIST Prime-Curve P-521", ctx, out))
goto err;
if (!test_ecdh_kat(out, "Brainpool Prime-Curve brainpoolP256r1", 256))
goto err;
if (!test_ecdh_kat(out, "Brainpool Prime-Curve brainpoolP384r1", 384))
goto err;
if (!test_ecdh_kat(out, "Brainpool Prime-Curve brainpoolP512r1", 512))
goto err;
ret = 0;
err:
ERR_print_errors_fp(stderr);
BN_CTX_free(ctx);
BIO_free(out);
CRYPTO_cleanup_all_ex_data();
ERR_remove_thread_state(NULL);
CRYPTO_mem_leaks_fp(stderr);
exit(ret);
}