1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
This file is part of GNUnet.
Copyright (C) 2015 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet 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 a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file util/perf_crypto_ecc_dlog.c
* @brief benchmark for ECC DLOG calculation
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include <gcrypt.h>
#include <gauger.h>
/**
* Name of the curve we are using. Note that we have hard-coded
* structs that use 256 bits, so using a bigger curve will require
* changes that break stuff badly. The name of the curve given here
* must be agreed by all peers and be supported by libgcrypt.
*/
#define CURVE "Ed25519"
/**
* Maximum value we benchmark dlog for.
*/
#define MAX_FACT (1024 * 1024)
/**
* Maximum memory to use, sqrt(MAX_FACT) is a good choice.
*/
#define MAX_MEM 1024
/**
* How many values do we test?
*/
#define TEST_ITER 10
/**
* Range of values to use for MATH tests.
*/
#define MATH_MAX 500000
/**
* Do some DLOG operations for testing.
*
* @param edc context for ECC operations
* @param do_dlog #GNUNET_YES if we want to actually do the bencharked operation
*/
static void
test_dlog (struct GNUNET_CRYPTO_EccDlogContext *edc,
int do_dlog)
{
gcry_mpi_t fact;
gcry_mpi_t n;
gcry_ctx_t ctx;
gcry_mpi_point_t q;
gcry_mpi_point_t g;
unsigned int i;
int x;
int iret;
GNUNET_assert (0 == gcry_mpi_ec_new (&ctx, NULL, CURVE));
g = gcry_mpi_ec_get_point ("g", ctx, 0);
GNUNET_assert (NULL != g);
n = gcry_mpi_ec_get_mpi ("n", ctx, 0);
q = gcry_mpi_point_new (0);
fact = gcry_mpi_new (0);
for (i=0;i<TEST_ITER;i++)
{
fprintf (stderr, ".");
x = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
MAX_FACT);
if (0 == GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
2))
{
gcry_mpi_set_ui (fact, x);
gcry_mpi_sub (fact, n, fact);
x = - x;
}
else
{
gcry_mpi_set_ui (fact, x);
}
gcry_mpi_ec_mul (q, fact, g, ctx);
if ( (GNUNET_YES == do_dlog) &&
(x !=
(iret = GNUNET_CRYPTO_ecc_dlog (edc,
q))) )
{
fprintf (stderr,
"DLOG failed for value %d (%d)\n",
x,
iret);
GNUNET_assert (0);
}
}
gcry_mpi_release (fact);
gcry_mpi_release (n);
gcry_mpi_point_release (g);
gcry_mpi_point_release (q);
gcry_ctx_release (ctx);
fprintf (stderr, "\n");
}
int
main (int argc, char *argv[])
{
struct GNUNET_CRYPTO_EccDlogContext *edc;
struct GNUNET_TIME_Absolute start;
struct GNUNET_TIME_Relative delta;
if (! gcry_check_version ("1.6.0"))
{
FPRINTF (stderr,
_
("libgcrypt has not the expected version (version %s is required).\n"),
"1.6.0");
return 0;
}
if (getenv ("GNUNET_GCRYPT_DEBUG"))
gcry_control (GCRYCTL_SET_DEBUG_FLAGS, 1u , 0);
GNUNET_log_setup ("perf-crypto-ecc-dlog",
"WARNING",
NULL);
start = GNUNET_TIME_absolute_get ();
edc = GNUNET_CRYPTO_ecc_dlog_prepare (MAX_FACT,
MAX_MEM);
printf ("DLOG precomputation 1M/1K took %s\n",
GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (start),
GNUNET_YES));
GAUGER ("UTIL", "ECC DLOG initialization",
GNUNET_TIME_absolute_get_duration
(start).rel_value_us / 1000LL, "ms/op");
start = GNUNET_TIME_absolute_get ();
/* first do a baseline run without the DLOG */
test_dlog (edc, GNUNET_NO);
delta = GNUNET_TIME_absolute_get_duration (start);
start = GNUNET_TIME_absolute_get ();
test_dlog (edc, GNUNET_YES);
delta = GNUNET_TIME_relative_subtract (GNUNET_TIME_absolute_get_duration (start),
delta);
printf ("%u DLOG calculations took %s\n",
TEST_ITER,
GNUNET_STRINGS_relative_time_to_string (delta,
GNUNET_YES));
GAUGER ("UTIL", "ECC DLOG operations",
delta.rel_value_us / 1000LL / TEST_ITER,
"ms/op");
GNUNET_CRYPTO_ecc_dlog_release (edc);
return 0;
}
/* end of perf_crypto_ecc_dlog.c */
|
