Commit 3112b263 authored by Niels Möller's avatar Niels Möller

New testcases for ecc_point_mul and ecc_point_mul_g.

parent 40e2b07a
2014-08-24 Niels Möller <nisse@lysator.liu.se>
* testsuite/ecdh-test.c: Test ecc_point_mul and ecc_point_mul_g,
using test data generated by ecc-ref.gp.
* testsuite/Makefile.in (TS_HOGWEED_SOURCES): Added ecdh-test.c.
* misc/ecc-ref.gp: Script to generate ECDH test data.
2014-08-23 Niels Möller <nisse@lysator.liu.se>
......
......@@ -220,6 +220,9 @@ ecdsa-verify-test$(EXEEXT): ecdsa-verify-test.$(OBJEXT)
ecdsa-keygen-test$(EXEEXT): ecdsa-keygen-test.$(OBJEXT)
$(LINK) ecdsa-keygen-test.$(OBJEXT) $(TEST_OBJS) -o ecdsa-keygen-test$(EXEEXT)
ecdh-test$(EXEEXT): ecdh-test.$(OBJEXT)
$(LINK) ecdh-test.$(OBJEXT) $(TEST_OBJS) -o ecdh-test$(EXEEXT)
sha1-huge-test$(EXEEXT): sha1-huge-test.$(OBJEXT)
$(LINK) sha1-huge-test.$(OBJEXT) $(TEST_OBJS) -o sha1-huge-test$(EXEEXT)
......
......@@ -42,7 +42,8 @@ TS_HOGWEED_SOURCES = sexp-test.c sexp-format-test.c \
curve25519-dh-test.c \
ecc-mod-test.c ecc-modinv-test.c ecc-redc-test.c \
ecc-mul-g-test.c ecc-mul-a-test.c \
ecdsa-sign-test.c ecdsa-verify-test.c ecdsa-keygen-test.c
ecdsa-sign-test.c ecdsa-verify-test.c \
ecdsa-keygen-test.c ecdh-test.c
TS_SOURCES = $(TS_NETTLE_SOURCES) $(TS_HOGWEED_SOURCES)
CXX_SOURCES = cxx-test.cxx
......
/* ecdh-test.c
Copyright (C) 2014 Niels Möller
This file is part of GNU Nettle.
GNU Nettle is free software: you can redistribute it and/or
modify it under the terms of either:
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at your
option) any later version.
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at your
option) any later version.
or both in parallel, as here.
GNU Nettle is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see http://www.gnu.org/licenses/.
*/
#include "testutils.h"
static void
set_point (struct ecc_point *p,
const char *x, const char *y)
{
mpz_t X, Y;
mpz_init_set_str (X, x, 0);
mpz_init_set_str (Y, y, 0);
ecc_point_set (p, X, Y);
mpz_clear (X);
mpz_clear (Y);
}
static void
set_scalar (struct ecc_scalar *s,
const char *x)
{
mpz_t X;
mpz_init_set_str (X, x, 0);
ecc_scalar_set (s, X);
mpz_clear (X);
}
static void
check_point (const char *label,
const struct ecc_point *P,
const struct ecc_point *R)
{
mpz_t px, py, rx, ry;
mpz_init (px);
mpz_init (py);
mpz_init (rx);
mpz_init (ry);
ecc_point_get (P, px, py);
ecc_point_get (R, rx, ry);
/* FIXME: Should have a public point compare function */
if (mpz_cmp (px, rx) != 0 || mpz_cmp (py, ry) != 0)
{
fprintf (stderr, "Failed %s\np_x = ", label);
mpz_out_str (stderr, 10, px);
fprintf (stderr, "\nr_x = ");
mpz_out_str (stderr, 10, rx);
fprintf (stderr, " (expected)\np_y = ");
mpz_out_str (stderr, 10, py);
fprintf (stderr, "\nr_y = ");
mpz_out_str (stderr, 10, ry);
fprintf (stderr, " (expected)\n");
abort ();
}
mpz_clear (px);
mpz_clear (py);
mpz_clear (rx);
mpz_clear (ry);
}
static void
test_dh (const struct ecc_curve *ecc,
const char *a_priv, const char *ax, const char *ay,
const char *b_priv, const char *bx, const char *by,
const char *sx, const char *sy)
{
struct ecc_point A, B, S, T;
struct ecc_scalar A_priv, B_priv;
ecc_scalar_init (&A_priv, ecc);
set_scalar (&A_priv, a_priv);
ecc_point_init (&A, ecc);
set_point (&A, ax, ay);
ecc_scalar_init (&B_priv, ecc);
set_scalar (&B_priv, b_priv);
ecc_point_init (&B, ecc);
set_point (&B, bx, by);
ecc_point_init (&S, ecc);
set_point (&S, sx, sy);
ecc_point_init (&T, ecc);
ecc_point_mul_g (&T, &A_priv);
check_point ("a g", &T, &A);
ecc_point_mul (&T, &B_priv, &T);
check_point ("b (a g)", &T, &S);
ecc_point_mul_g (&T, &B_priv);
check_point ("b g", &T, &B);
ecc_point_mul (&T, &A_priv, &T);
check_point ("a (b g)", &T, &S);
ecc_scalar_clear (&A_priv);
ecc_scalar_clear (&B_priv);
ecc_point_clear (&A);
ecc_point_clear (&B);
ecc_point_clear (&S);
ecc_point_clear (&T);
}
void
test_main(void)
{
test_dh (&nettle_secp_192r1,
"3406157206141798348095184987208239421004566462391397236532",
"1050363442265225480786760666329560655512990381040021438562",
"5298249600854377235107392014200406283816103564916230704184",
"738368960171459956677260317271477822683777845013274506165",
"2585840779771604687467445319428618542927556223024046979917",
"293088185788565313717816218507714888251468410990708684573",
"149293809021051532782730990145509724807636529827149481690",
"2891131861147398318714693938158856874319184314120776776192");
}
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