TeaSpeak/tomcrypt
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

resurrect DH in timing

Browse Source
This commit is contained in:
Steffen Jaeckel 2017-06-09 18:29:18 +02:00
parent f31d8ff864
commit e60d2076c5
1 changed files with 53 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

53
demos/timing.c
View File

@ -888,6 +888,58 @@ static void time_katja(void)
static void time_katja(void) { fprintf(stderr, "NO Katja\n"); }
#endif
#ifdef LTC_MDH
/* time various DH operations */
static void time_dh(void)
{
dh_key key;
ulong64 t1, t2;
unsigned char buf[2][4096];
unsigned long i, x, y, z;
int err;
static unsigned long sizes[] = {768/8, 1024/8, 1536/8, 2048/8, 3072/8, 4096/8, 6144/8, 8192/8, 100000};
for (x = sizes[i=0]; x < 100000; x = sizes[++i]) {
t2 = 0;
for (y = 0; y < 16; y++) {
t_start();
t1 = t_read();
if ((err = dh_make_key(&yarrow_prng, find_prng("yarrow"), x, &key)) != CRYPT_OK) {
fprintf(stderr, "\n\ndh_make_key says %s, wait...no it should say %s...damn you!\n", error_to_string(err), error_to_string(CRYPT_OK));
exit(EXIT_FAILURE);
}
t1 = t_read() - t1;
t2 += t1;
if (y < 15) {
dh_free(&key);
}
}
t2 >>= 4;
fprintf(stderr, "DH-%4lu make_key took %15llu cycles\n", x*8, t2);
t2 = 0;
for (y = 0; y < 16; y++) {
t_start();
t1 = t_read();
z = sizeof(buf[1]);
if ((err = dh_encrypt_key(buf[0], 20, buf[1], &z, &yarrow_prng, find_prng("yarrow"), find_hash("sha1"),
&key)) != CRYPT_OK) {
fprintf(stderr, "\n\ndh_encrypt_key says %s, wait...no it should say %s...damn you!\n", error_to_string(err), error_to_string(CRYPT_OK));
exit(EXIT_FAILURE);
}
t1 = t_read() - t1;
t2 += t1;
}
t2 >>= 4;
fprintf(stderr, "DH-%4lu encrypt_key took %15llu cycles\n", x*8, t2);
dh_free(&key);
}
}
#else
static void time_dh(void) { fprintf(stderr, "NO DH\n"); }
#endif
#ifdef LTC_MECC
/* time various ECC operations */
static void time_ecc(void)
@ -1386,6 +1438,7 @@ time_rsa();
time_dsa();
time_ecc();
time_katja();
time_dh();
return EXIT_SUCCESS;
}