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nettle
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230e8312
Commit
230e8312
authored
Dec 18, 2015
by
Niels Möller
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Improved ecc-mod-test with random seeding.
parent
fa269b6a
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ChangeLog
ChangeLog
+5
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testsuite/ecc-mod-test.c
testsuite/ecc-mod-test.c
+164
-40
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ChangeLog
View file @
230e8312
2015-12-18 Niels Möller <nisse@lysator.liu.se>
* testsuite/ecc-mod-test.c (test_main): Handle random seeding if
NETTLE_TEST_SEED is set in the environment.
2015-12-15 Niels Möller <nisse@lysator.liu.se>
* x86_64/ecc-384-modp.asm: Fixed carry propagation bug. Problem
...
...
testsuite/ecc-mod-test.c
View file @
230e8312
#include "testutils.h"
#include <errno.h>
#include <limits.h>
#include <sys/time.h>
static
void
ref_mod
(
mp_limb_t
*
rp
,
const
mp_limb_t
*
ap
,
const
mp_limb_t
*
mp
,
mp_size_t
mn
)
{
...
...
@@ -16,38 +20,49 @@ ref_mod (mp_limb_t *rp, const mp_limb_t *ap, const mp_limb_t *mp, mp_size_t mn)
#define COUNT 50000
static
void
test_modulo
(
gmp_randstate_t
rands
,
const
char
*
name
,
const
struct
ecc_modulo
*
m
)
test_one
(
const
char
*
name
,
const
struct
ecc_modulo
*
m
,
const
mpz_t
r
)
{
mp_limb_t
a
[
MAX_SIZE
];
mp_limb_t
t
[
MAX_SIZE
];
mp_limb_t
ref
[
MAX_SIZE
];
mpz_t
r
;
unsigned
j
;
mpz_init
(
r
);
for
(
j
=
0
;
j
<
COUNT
;
j
++
)
{
if
(
j
&
1
)
mpz_rrandomb
(
r
,
rands
,
2
*
m
->
size
*
GMP_NUMB_BITS
);
else
mpz_urandomb
(
r
,
rands
,
2
*
m
->
size
*
GMP_NUMB_BITS
);
mpz_limbs_copy
(
a
,
r
,
2
*
m
->
size
);
mpz_limbs_copy
(
a
,
r
,
2
*
m
->
size
);
ref_mod
(
ref
,
a
,
m
->
m
,
m
->
size
);
ref_mod
(
ref
,
a
,
m
->
m
,
m
->
size
);
mpn_copyi
(
t
,
a
,
2
*
m
->
size
);
m
->
mod
(
m
,
t
);
if
(
mpn_cmp
(
t
,
m
->
m
,
m
->
size
)
>=
0
)
mpn_sub_n
(
t
,
t
,
m
->
m
,
m
->
size
);
if
(
mpn_cmp
(
t
,
ref
,
m
->
size
))
{
fprintf
(
stderr
,
"m->mod %s failed: bit_size = %u
\n
"
,
name
,
m
->
bit_size
);
fprintf
(
stderr
,
"a = "
);
mpn_out_str
(
stderr
,
16
,
a
,
2
*
m
->
size
);
fprintf
(
stderr
,
"
\n
t = "
);
mpn_out_str
(
stderr
,
16
,
t
,
m
->
size
);
fprintf
(
stderr
,
" (bad)
\n
ref = "
);
mpn_out_str
(
stderr
,
16
,
ref
,
m
->
size
);
fprintf
(
stderr
,
"
\n
"
);
abort
();
}
if
(
m
->
B_size
<
m
->
size
)
{
mpn_copyi
(
t
,
a
,
2
*
m
->
size
);
m
->
mod
(
m
,
t
);
ecc_
mod
(
m
,
t
);
if
(
mpn_cmp
(
t
,
m
->
m
,
m
->
size
)
>=
0
)
mpn_sub_n
(
t
,
t
,
m
->
m
,
m
->
size
);
if
(
mpn_cmp
(
t
,
ref
,
m
->
size
))
{
fprintf
(
stderr
,
"
m->
mod %s failed: bit_size = %u
\n
"
,
fprintf
(
stderr
,
"
ecc_
mod %s failed: bit_size = %u
\n
"
,
name
,
m
->
bit_size
);
fprintf
(
stderr
,
"a = "
);
mpn_out_str
(
stderr
,
16
,
a
,
2
*
m
->
size
);
fprintf
(
stderr
,
"
\n
t = "
);
...
...
@@ -57,44 +72,153 @@ test_modulo (gmp_randstate_t rands, const char *name,
fprintf
(
stderr
,
"
\n
"
);
abort
();
}
}
}
if
(
m
->
B_size
<
m
->
size
)
static
void
test_modulo
(
gmp_randstate_t
rands
,
const
char
*
name
,
const
struct
ecc_modulo
*
m
,
unsigned
count
)
{
mpz_t
r
;
unsigned
j
;
mpz_init
(
r
);
for
(
j
=
0
;
j
<
count
;
j
++
)
{
if
(
j
&
1
)
mpz_rrandomb
(
r
,
rands
,
2
*
m
->
size
*
GMP_NUMB_BITS
);
else
mpz_urandomb
(
r
,
rands
,
2
*
m
->
size
*
GMP_NUMB_BITS
);
test_one
(
name
,
m
,
r
);
}
mpz_clear
(
r
);
}
static
void
test_fixed
(
void
)
{
mpz_t
r
;
mpz_init
(
r
);
/* Triggered a bug reported by Hanno Böck. */
mpz_set_str
(
r
,
"FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFF001C2C00"
,
16
);
mpz_mul_2exp
(
r
,
r
,
256
);
test_one
(
"p"
,
&
nettle_secp_256r1
.
p
,
r
);
test_one
(
"q"
,
&
nettle_secp_256r1
.
q
,
r
);
mpz_set_str
(
r
,
"ffffffff00000001fffffffeffffffffffffffffffffffffffffffc0000000000007ffffffffffffffffffffffffffff00000000000000000fffffffffffffff"
,
16
);
test_one
(
"p"
,
&
nettle_secp_256r1
.
p
,
r
);
test_one
(
"q"
,
&
nettle_secp_256r1
.
q
,
r
);
/* Triggered a bug reported by Hanno Böck. */
mpz_set_str
(
r
,
"4c9000000000000000000000000000000000000000000000004a604db486e000000000000000000000000000000000000000121025be29575adb2c8ffffffffffffffffffffffffffffffffffffffffffffffffffffffff"
,
16
);
test_one
(
"p"
,
&
nettle_secp_384r1
.
p
,
r
);
test_one
(
"q"
,
&
nettle_secp_384r1
.
q
,
r
);
/* Triggered a carry bug in development version. */
mpz_set_str
(
r
,
"e64a84643150260640e4677c19ffc4faef06042132b86af6e9ee33fe1850222e57a514d5f1d6d444008bb896a96a43d5629945e57548f5e12f66be132b24110cbb2df6d7d3dd3aaadc98b0bbf29573843ad72e57f59fc5d4f56cc599da18bb99"
,
16
);
test_one
(
"p"
,
&
nettle_secp_384r1
.
p
,
r
);
test_one
(
"q"
,
&
nettle_secp_384r1
.
q
,
r
);
mpz_clear
(
r
);
}
static
void
test_patterns
(
const
char
*
name
,
const
struct
ecc_modulo
*
m
)
{
mpz_t
r
;
unsigned
j
;
mpz_init
(
r
);
for
(
j
=
m
->
bit_size
;
j
<
2
*
m
->
bit_size
;
j
++
)
{
mpz_set_ui
(
r
,
1
);
mpz_mul_2exp
(
r
,
r
,
j
);
test_one
(
name
,
m
,
r
);
}
mpz_clear
(
r
);
}
#if !NETTLE_USE_MINI_GMP
static
void
get_random_seed
(
mpz_t
seed
)
{
struct
timeval
tv
;
FILE
*
f
;
f
=
fopen
(
"/dev/urandom"
,
"rb"
);
if
(
f
)
{
uint8_t
buf
[
8
];
size_t
res
;
setbuf
(
f
,
NULL
);
res
=
fread
(
&
buf
,
sizeof
(
buf
),
1
,
f
);
fclose
(
f
);
if
(
res
==
1
)
{
mpn_copyi
(
t
,
a
,
2
*
m
->
size
);
ecc_mod
(
m
,
t
);
if
(
mpn_cmp
(
t
,
m
->
m
,
m
->
size
)
>=
0
)
mpn_sub_n
(
t
,
t
,
m
->
m
,
m
->
size
);
if
(
mpn_cmp
(
t
,
ref
,
m
->
size
))
{
fprintf
(
stderr
,
"ecc_mod %s failed: bit_size = %u
\n
"
,
name
,
m
->
bit_size
);
fprintf
(
stderr
,
"a = "
);
mpn_out_str
(
stderr
,
16
,
a
,
2
*
m
->
size
);
fprintf
(
stderr
,
"
\n
t = "
);
mpn_out_str
(
stderr
,
16
,
t
,
m
->
size
);
fprintf
(
stderr
,
" (bad)
\n
ref = "
);
mpn_out_str
(
stderr
,
16
,
ref
,
m
->
size
);
fprintf
(
stderr
,
"
\n
"
);
abort
();
}
nettle_mpz_set_str_256_u
(
seed
,
sizeof
(
buf
),
buf
);
return
;
}
fprintf
(
stderr
,
"Read of /dev/urandom failed: %s
\n
"
,
strerror
(
errno
));
}
mpz_clear
(
r
);
gettimeofday
(
&
tv
,
NULL
);
mpz_set_ui
(
seed
,
tv
.
tv_sec
);
mpz_mul_ui
(
seed
,
seed
,
1000000UL
);
mpz_add_ui
(
seed
,
seed
,
tv
.
tv_usec
);
}
#endif
/* !NETTLE_USE_MINI_GMP */
void
test_main
(
void
)
{
const
char
*
nettle_test_seed
;
gmp_randstate_t
rands
;
unsigned
count
=
COUNT
;
unsigned
i
;
gmp_randinit_default
(
rands
);
test_fixed
();
for
(
i
=
0
;
ecc_curves
[
i
];
i
++
)
{
test_patterns
(
"p"
,
&
ecc_curves
[
i
]
->
p
);
test_patterns
(
"q"
,
&
ecc_curves
[
i
]
->
p
);
}
#if !NETTLE_USE_MINI_GMP
nettle_test_seed
=
getenv
(
"NETTLE_TEST_SEED"
);
if
(
nettle_test_seed
&&
*
nettle_test_seed
)
{
mpz_t
seed
;
mpz_init
(
seed
);
if
(
mpz_set_str
(
seed
,
nettle_test_seed
,
0
)
<
0
||
mpz_sgn
(
seed
)
<
0
)
die
(
"Invalid NETTLE_TEST_SEED: %s
\n
"
,
nettle_test_seed
);
if
(
mpz_sgn
(
seed
)
==
0
)
get_random_seed
(
seed
);
fprintf
(
stderr
,
"Using NETTLE_TEST_SEED="
);
mpz_out_str
(
stderr
,
10
,
seed
);
fprintf
(
stderr
,
"
\n
"
);
gmp_randseed
(
rands
,
seed
);
mpz_clear
(
seed
);
count
*=
20
;
}
#endif
/* !NETTLE_USE_MINI_GMP */
for
(
i
=
0
;
ecc_curves
[
i
];
i
++
)
{
test_modulo
(
rands
,
"p"
,
&
ecc_curves
[
i
]
->
p
);
test_modulo
(
rands
,
"q"
,
&
ecc_curves
[
i
]
->
q
);
test_modulo
(
rands
,
"p"
,
&
ecc_curves
[
i
]
->
p
,
count
);
test_modulo
(
rands
,
"q"
,
&
ecc_curves
[
i
]
->
q
,
count
);
}
gmp_randclear
(
rands
);
}
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