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Dmitry Baryshkov
nettle
Commits
993bfa0c
Commit
993bfa0c
authored
Oct 02, 2014
by
Niels Möller
Browse files
New testcase for modular sqrt.
parent
c510cfa4
Changes
4
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ChangeLog
View file @
993bfa0c
2014-10-02 Niels Möller <nisse@lysator.liu.se>
* testsuite/ecc-sqrt-test.c: New test case.
* testsuite/Makefile.in (TS_HOGWEED_SOURCES): Added
ecc-sqrt-test.c.
* ecc-25519.c (PHIGH_BITS): Always define this constant.
(ecc_25519_zero_p): New function.
(ecc_25519_sqrt): Take a ratio u/v as input. Added scratch
...
...
testsuite/.test-rules.make
View file @
993bfa0c
...
...
@@ -187,12 +187,6 @@ dsa-test$(EXEEXT): dsa-test.$(OBJEXT)
dsa-keygen-test$(EXEEXT)
:
dsa-keygen-test.$(OBJEXT)
$(LINK)
dsa-keygen-test.
$(OBJEXT)
$(TEST_OBJS)
-o
dsa-keygen-test
$(EXEEXT)
curve25519-dup-test$(EXEEXT)
:
curve25519-dup-test.$(OBJEXT)
$(LINK)
curve25519-dup-test.
$(OBJEXT)
$(TEST_OBJS)
-o
curve25519-dup-test
$(EXEEXT)
curve25519-add-test$(EXEEXT)
:
curve25519-add-test.$(OBJEXT)
$(LINK)
curve25519-add-test.
$(OBJEXT)
$(TEST_OBJS)
-o
curve25519-add-test
$(EXEEXT)
curve25519-dh-test$(EXEEXT)
:
curve25519-dh-test.$(OBJEXT)
$(LINK)
curve25519-dh-test.
$(OBJEXT)
$(TEST_OBJS)
-o
curve25519-dh-test
$(EXEEXT)
...
...
@@ -205,6 +199,9 @@ ecc-modinv-test$(EXEEXT): ecc-modinv-test.$(OBJEXT)
ecc-redc-test$(EXEEXT)
:
ecc-redc-test.$(OBJEXT)
$(LINK)
ecc-redc-test.
$(OBJEXT)
$(TEST_OBJS)
-o
ecc-redc-test
$(EXEEXT)
ecc-sqrt-test$(EXEEXT)
:
ecc-sqrt-test.$(OBJEXT)
$(LINK)
ecc-sqrt-test.
$(OBJEXT)
$(TEST_OBJS)
-o
ecc-sqrt-test
$(EXEEXT)
ecc-dup-test$(EXEEXT)
:
ecc-dup-test.$(OBJEXT)
$(LINK)
ecc-dup-test.
$(OBJEXT)
$(TEST_OBJS)
-o
ecc-dup-test
$(EXEEXT)
...
...
testsuite/Makefile.in
View file @
993bfa0c
...
...
@@ -40,6 +40,7 @@ TS_HOGWEED_SOURCES = sexp-test.c sexp-format-test.c \
dsa-test.c dsa-keygen-test.c
\
curve25519-dh-test.c
\
ecc-mod-test.c ecc-modinv-test.c ecc-redc-test.c
\
ecc-sqrt-test.c
\
ecc-dup-test.c ecc-add-test.c
\
ecc-mul-g-test.c ecc-mul-a-test.c
\
ecdsa-sign-test.c ecdsa-verify-test.c
\
...
...
testsuite/ecc-sqrt-test.c
0 → 100644
View file @
993bfa0c
/* ecc-sqrt.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"
#define COUNT 5000
static
void
test_modulo
(
gmp_randstate_t
rands
,
const
struct
ecc_modulo
*
m
)
{
mpz_t
u
;
mpz_t
v
;
mpz_t
p
;
mpz_t
r
;
mpz_t
t
;
unsigned
z
,
i
;
mp_limb_t
*
up
;
mp_limb_t
*
vp
;
mp_limb_t
*
rp
;
mp_limb_t
*
scratch
;
mpz_init
(
u
);
mpz_init
(
v
);
mpz_init
(
t
);
mpz_roinit_n
(
p
,
m
->
m
,
m
->
size
);
up
=
xalloc_limbs
(
m
->
size
);
vp
=
xalloc_limbs
(
m
->
size
);
rp
=
xalloc_limbs
(
2
*
m
->
size
);
scratch
=
xalloc_limbs
(
m
->
sqrt_itch
);
/* Find a non-square */
for
(
z
=
2
;
mpz_ui_kronecker
(
z
,
p
)
!=
-
1
;
z
++
)
;
if
(
verbose
)
fprintf
(
stderr
,
"Non square: %d
\n
"
,
z
);
for
(
i
=
0
;
i
<
COUNT
;
i
++
)
{
if
(
i
&
1
)
{
mpz_rrandomb
(
u
,
rands
,
m
->
bit_size
);
mpz_rrandomb
(
v
,
rands
,
m
->
bit_size
);
}
else
{
mpz_urandomb
(
u
,
rands
,
m
->
bit_size
);
mpz_urandomb
(
v
,
rands
,
m
->
bit_size
);
}
mpz_limbs_copy
(
up
,
u
,
m
->
size
);
mpz_limbs_copy
(
vp
,
v
,
m
->
size
);
if
(
!
m
->
sqrt
(
m
,
rp
,
up
,
vp
,
scratch
))
{
mpz_mul_ui
(
u
,
u
,
z
);
mpz_mod
(
u
,
u
,
p
);
mpz_limbs_copy
(
up
,
u
,
m
->
size
);
if
(
!
m
->
sqrt
(
m
,
rp
,
up
,
vp
,
scratch
))
{
fprintf
(
stderr
,
"m->sqrt returned failure, bit_size = %d
\n
"
"u = 0x"
,
m
->
bit_size
);
mpz_out_str
(
stderr
,
16
,
u
);
fprintf
(
stderr
,
"
\n
v = 0x"
);
mpz_out_str
(
stderr
,
16
,
v
);
fprintf
(
stderr
,
"
\n
"
);
abort
();
}
}
/* Check that r^2 v = u */
mpz_roinit_n
(
r
,
rp
,
m
->
size
);
mpz_mul
(
t
,
r
,
r
);
mpz_mul
(
t
,
t
,
v
);
if
(
!
mpz_congruent_p
(
t
,
u
,
p
))
{
fprintf
(
stderr
,
"m->sqrt gave incorrect result, bit_size = %d
\n
"
"u = 0x"
,
m
->
bit_size
);
mpz_out_str
(
stderr
,
16
,
u
);
fprintf
(
stderr
,
"
\n
v = 0x"
);
mpz_out_str
(
stderr
,
16
,
v
);
fprintf
(
stderr
,
"
\n
r = 0x"
);
mpz_out_str
(
stderr
,
16
,
r
);
fprintf
(
stderr
,
"
\n
"
);
abort
();
}
}
mpz_clear
(
u
);
mpz_clear
(
v
);
mpz_clear
(
t
);
free
(
up
);
free
(
vp
);
free
(
rp
);
free
(
scratch
);
}
void
test_main
(
void
)
{
gmp_randstate_t
rands
;
unsigned
i
;
gmp_randinit_default
(
rands
);
for
(
i
=
0
;
ecc_curves
[
i
];
i
++
)
{
if
(
ecc_curves
[
i
]
->
p
.
sqrt
)
test_modulo
(
rands
,
&
ecc_curves
[
i
]
->
p
);
}
gmp_randclear
(
rands
);
}
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