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#include <tomcrypt_test.h>
#ifdef MDH
int dh_tests (void)
{
unsigned char buf[3][4096];
unsigned long x, y, z;
int stat, stat2;
dh_key usera, userb;
DO(dh_test());
/* make up two keys */
DO(dh_make_key (&yarrow_prng, find_prng ("yarrow"), 512, &usera));
DO(dh_make_key (&yarrow_prng, find_prng ("yarrow"), 512, &userb));
/* make the shared secret */
x = 4096;
DO(dh_shared_secret (&usera, &userb, buf[0], &x));
y = 4096;
DO(dh_shared_secret (&userb, &usera, buf[1], &y));
if (y != x) {
fprintf(stderr, "DH Shared keys are not same size.\n");
return 1;
}
if (memcmp (buf[0], buf[1], x)) {
fprintf(stderr, "DH Shared keys not same contents.\n");
return 1;
}
/* now export userb */
y = 4096;
DO(dh_export (buf[1], &y, PK_PUBLIC, &userb));
dh_free (&userb);
/* import and make the shared secret again */
DO(dh_import (buf[1], y, &userb));
z = 4096;
DO(dh_shared_secret (&usera, &userb, buf[2], &z));
if (z != x) {
fprintf(stderr, "failed. Size don't match?\n");
return 1;
}
if (memcmp (buf[0], buf[2], x)) {
fprintf(stderr, "Failed. Content didn't match.\n");
return 1;
}
dh_free (&usera);
dh_free (&userb);
/* test encrypt_key */
dh_make_key (&yarrow_prng, find_prng ("yarrow"), 512, &usera);
for (x = 0; x < 16; x++) {
buf[0][x] = x;
}
y = sizeof (buf[1]);
DO(dh_encrypt_key (buf[0], 16, buf[1], &y, &yarrow_prng, find_prng ("yarrow"), find_hash ("md5"), &usera));
zeromem (buf[0], sizeof (buf[0]));
x = sizeof (buf[0]);
DO(dh_decrypt_key (buf[1], y, buf[0], &x, &usera));
if (x != 16) {
fprintf(stderr, "Failed (length)\n");
return 1;
}
for (x = 0; x < 16; x++)
if (buf[0][x] != x) {
fprintf(stderr, "Failed (contents)\n");
return 1;
}
/* test sign_hash */
for (x = 0; x < 16; x++) {
buf[0][x] = x;
}
x = sizeof (buf[1]);
DO(dh_sign_hash (buf[0], 16, buf[1], &x, &yarrow_prng , find_prng ("yarrow"), &usera));
DO(dh_verify_hash (buf[1], x, buf[0], 16, &stat, &usera));
buf[0][0] ^= 1;
DO(dh_verify_hash (buf[1], x, buf[0], 16, &stat2, &usera));
if (!(stat == 1 && stat2 == 0)) {
fprintf(stderr, "dh_sign/verify_hash %d %d", stat, stat2);
return 1;
}
dh_free (&usera);
return 0;
}
#else
int dh_tests(void)
{
fprintf(stderr, "NOP");
return 0;
}
#endif
/* $Source: /cvs/libtom/libtomcrypt/testprof/dh_tests.c,v $ */
/* $Revision: 1.5 $ */
/* $Date: 2005/05/21 12:51:25 $ */
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