tomcrypt/demos/test/ecc_test.c
2010-06-16 12:38:16 +02:00

90 lines
2.2 KiB
C

#include "test.h"
int ecc_tests (void)
{
unsigned char buf[4][4096];
unsigned long x, y, z;
int stat, stat2;
ecc_key usera, userb;
DO(ecc_test ());
/* make up two keys */
DO(ecc_make_key (&test_yarrow, find_prng ("yarrow"), 65, &usera));
DO(ecc_make_key (&test_yarrow, find_prng ("yarrow"), 65, &userb));
/* make the shared secret */
x = 4096;
DO(ecc_shared_secret (&usera, &userb, buf[0], &x));
y = 4096;
DO(ecc_shared_secret (&userb, &usera, buf[1], &y));
if (y != x) {
printf ("ecc Shared keys are not same size.");
return 1;
}
if (memcmp (buf[0], buf[1], x)) {
printf ("ecc Shared keys not same contents.");
return 1;
}
/* now export userb */
y = 4096;
DO(ecc_export (buf[1], &y, PK_PUBLIC, &userb));
ecc_free (&userb);
/* import and make the shared secret again */
DO(ecc_import (buf[1], y, &userb));
z = 4096;
DO(ecc_shared_secret (&usera, &userb, buf[2], &z));
if (z != x) {
printf ("failed. Size don't match?");
return 1;
}
if (memcmp (buf[0], buf[2], x)) {
printf ("Failed. Content didn't match.");
return 1;
}
ecc_free (&usera);
ecc_free (&userb);
/* test encrypt_key */
ecc_make_key (&test_yarrow, find_prng ("yarrow"), 65, &usera);
for (x = 0; x < 32; x++) {
buf[0][x] = x;
}
y = sizeof (buf[1]);
DO(ecc_encrypt_key (buf[0], 32, buf[1], &y, &test_yarrow, find_prng ("yarrow"), find_hash ("sha256"), &usera));
zeromem (buf[0], sizeof (buf[0]));
x = sizeof (buf[0]);
DO(ecc_decrypt_key (buf[1], y, buf[0], &x, &usera));
if (x != 32) {
printf ("Failed (length)");
return 1;
}
for (x = 0; x < 32; x++)
if (buf[0][x] != x) {
printf ("Failed (contents)");
return 1;
}
/* test sign_hash */
for (x = 0; x < 16; x++) {
buf[0][x] = x;
}
x = sizeof (buf[1]);
DO(ecc_sign_hash (buf[0], 16, buf[1], &x, &test_yarrow, find_prng ("yarrow"), &usera));
DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat, &usera));
buf[0][0] ^= 1;
DO(ecc_verify_hash (buf[1], x, buf[0], 16, &stat2, &usera));
if (!(stat == 1 && stat2 == 0)) {
printf("ecc_verify_hash failed");
return 1;
}
ecc_free (&usera);
return 0;
}