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openssl/crypto/ecdh/ecdhtest.c
Dr. Stephen Henson da317b94d9 Add test vectors from RFC7027
2013-10-15 11:33:30 +01:00

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/* crypto/ecdh/ecdhtest.c */
/* ====================================================================
* 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 "../e_os.h"
#include <openssl/opensslconf.h> /* for OPENSSL_NO_ECDH */
#include <openssl/crypto.h>
#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/objects.h>
#include <openssl/rand.h>
#include <openssl/sha.h>
#include <openssl/err.h>
#ifdef OPENSSL_NO_ECDH
int main(int argc, char *argv[])
{
printf("No ECDH support\n");
return(0);
}
#else
#include <openssl/ec.h>
#include <openssl/ecdh.h>
#ifdef OPENSSL_SYS_WIN16
#define MS_CALLBACK _far _loadds
#else
#define MS_CALLBACK
#endif
#if 0
static void MS_CALLBACK cb(int p, int n, void *arg);
#endif
static const char rnd_seed[] = "string to make the random number generator think it has entropy";
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)
{
EC_KEY *a=NULL;
EC_KEY *b=NULL;
BIGNUM *x_a=NULL, *y_a=NULL,
*x_b=NULL, *y_b=NULL;
char buf[12];
unsigned char *abuf=NULL,*bbuf=NULL;
int i,alen,blen,aout,bout,ret=0;
const EC_GROUP *group;
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);
#ifdef NOISY
BIO_puts(out,"\n");
#else
(void)BIO_flush(out);
#endif
if (!EC_KEY_generate_key(a)) goto err;
if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) == NID_X9_62_prime_field)
{
if (!EC_POINT_get_affine_coordinates_GFp(group,
EC_KEY_get0_public_key(a), x_a, y_a, ctx)) goto err;
}
#ifndef OPENSSL_NO_EC2M
else
{
if (!EC_POINT_get_affine_coordinates_GF2m(group,
EC_KEY_get0_public_key(a), x_a, y_a, ctx)) goto err;
}
#endif
#ifdef NOISY
BIO_puts(out," pri 1=");
BN_print(out,a->priv_key);
BIO_puts(out,"\n pub 1=");
BN_print(out,x_a);
BIO_puts(out,",");
BN_print(out,y_a);
BIO_puts(out,"\n");
#else
BIO_printf(out," .");
(void)BIO_flush(out);
#endif
if (!EC_KEY_generate_key(b)) goto err;
if (EC_METHOD_get_field_type(EC_GROUP_method_of(group)) == NID_X9_62_prime_field)
{
if (!EC_POINT_get_affine_coordinates_GFp(group,
EC_KEY_get0_public_key(b), x_b, y_b, ctx)) goto err;
}
#ifndef OPENSSL_NO_EC2M
else
{
if (!EC_POINT_get_affine_coordinates_GF2m(group,
EC_KEY_get0_public_key(b), x_b, y_b, ctx)) goto err;
}
#endif
#ifdef NOISY
BIO_puts(out," pri 2=");
BN_print(out,b->priv_key);
BIO_puts(out,"\n pub 2=");
BN_print(out,x_b);
BIO_puts(out,",");
BN_print(out,y_b);
BIO_puts(out,"\n");
#else
BIO_printf(out,".");
(void)BIO_flush(out);
#endif
alen=KDF1_SHA1_len;
abuf=(unsigned char *)OPENSSL_malloc(alen);
aout=ECDH_compute_key(abuf,alen,EC_KEY_get0_public_key(b),a,KDF1_SHA1);
#ifdef NOISY
BIO_puts(out," key1 =");
for (i=0; i<aout; i++)
{
sprintf(buf,"%02X",abuf[i]);
BIO_puts(out,buf);
}
BIO_puts(out,"\n");
#else
BIO_printf(out,".");
(void)BIO_flush(out);
#endif
blen=KDF1_SHA1_len;
bbuf=(unsigned char *)OPENSSL_malloc(blen);
bout=ECDH_compute_key(bbuf,blen,EC_KEY_get0_public_key(a),b,KDF1_SHA1);
#ifdef NOISY
BIO_puts(out," key2 =");
for (i=0; i<bout; i++)
{
sprintf(buf,"%02X",bbuf[i]);
BIO_puts(out,buf);
}
BIO_puts(out,"\n");
#else
BIO_printf(out,".");
(void)BIO_flush(out);
#endif
if ((aout < 4) || (bout != aout) || (memcmp(abuf,bbuf,aout) != 0))
{
#ifndef NOISY
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++)
{
sprintf(buf, "%02X", bbuf[i]);
BIO_puts(out, buf);
}
BIO_printf(out, "\n");
BIO_printf(out, "generated key b: ");
for (i=0; i<aout; i++)
{
sprintf(buf, "%02X", abuf[i]);
BIO_puts(out,buf);
}
BIO_printf(out, "\n");
#endif
fprintf(stderr,"Error in ECDH routines\n");
ret=0;
}
else
{
#ifndef NOISY
BIO_printf(out, " ok\n");
#endif
ret=1;
}
err:
ERR_print_errors_fp(stderr);
if (abuf != NULL) OPENSSL_free(abuf);
if (bbuf != NULL) OPENSSL_free(bbuf);
if (x_a) BN_free(x_a);
if (y_a) BN_free(y_a);
if (x_b) BN_free(x_b);
if (y_b) BN_free(y_b);
if (b) EC_KEY_free(b);
if (a) 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)
{
int ok = 0;
EC_KEY *k = NULL;
BIGNUM *priv = NULL;
EC_POINT *pub = NULL;
const EC_GROUP *grp;
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:
if (priv)
BN_clear_free(priv);
if (pub)
EC_POINT_free(pub);
if (ok)
return k;
else if (k)
EC_KEY_free(k);
return NULL;
}
/* 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 = (EC_GROUP_get_degree(EC_KEY_get0_group(key1)) + 7)/8;
if (Ztmplen != Zlen)
goto err;
Ztmp = OPENSSL_malloc(Ztmplen);
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 (key1)
EC_KEY_free(key1);
if (key2)
EC_KEY_free(key2);
if (Ztmp)
OPENSSL_free(Ztmp);
if (rv)
BIO_puts(out, " ok\n");
else
{
fprintf(stderr, "Error in ECDH routines\n");
ERR_print_errors_fp(stderr);
}
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;
CRYPTO_malloc_debug_init();
CRYPTO_dbg_set_options(V_CRYPTO_MDEBUG_ALL);
CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
#ifdef OPENSSL_SYS_WIN32
CRYPTO_malloc_init();
#endif
RAND_seed(rnd_seed, sizeof rnd_seed);
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;
#ifndef OPENSSL_NO_EC2M
/* NIST BINARY CURVES TESTS */
if (!test_ecdh_curve(NID_sect163k1, "NIST Binary-Curve K-163", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect163r2, "NIST Binary-Curve B-163", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect233k1, "NIST Binary-Curve K-233", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect233r1, "NIST Binary-Curve B-233", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect283k1, "NIST Binary-Curve K-283", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect283r1, "NIST Binary-Curve B-283", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect409k1, "NIST Binary-Curve K-409", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect409r1, "NIST Binary-Curve B-409", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect571k1, "NIST Binary-Curve K-571", ctx, out)) goto err;
if (!test_ecdh_curve(NID_sect571r1, "NIST Binary-Curve B-571", ctx, out)) goto err;
#endif
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);
if (ctx) BN_CTX_free(ctx);
BIO_free(out);
CRYPTO_cleanup_all_ex_data();
ERR_remove_thread_state(NULL);
CRYPTO_mem_leaks_fp(stderr);
EXIT(ret);
return(ret);
}
#if 0
static void MS_CALLBACK cb(int p, int n, void *arg)
{
char c='*';
if (p == 0) c='.';
if (p == 1) c='+';
if (p == 2) c='*';
if (p == 3) c='\n';
BIO_write((BIO *)arg,&c,1);
(void)BIO_flush((BIO *)arg);
#ifdef LINT
p=n;
#endif
}
#endif
#endif
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