79 lines
2.6 KiB
C
79 lines
2.6 KiB
C
#include <tomcrypt_test.h>
|
|
|
|
#ifdef LTC_PRNG_ENABLE_LTC_RNG
|
|
|
|
static unsigned long my_test_rng_read;
|
|
|
|
static unsigned long my_test_rng(unsigned char *buf, unsigned long len,
|
|
void (*callback)(void))
|
|
{
|
|
unsigned long n;
|
|
LTC_UNUSED_PARAM(callback);
|
|
for (n = 0; n < len; ++n) {
|
|
buf[n] = 4;
|
|
}
|
|
my_test_rng_read += n;
|
|
return n;
|
|
}
|
|
|
|
#endif
|
|
|
|
int prng_test(void)
|
|
{
|
|
int err = CRYPT_NOP;
|
|
int x;
|
|
unsigned char buf[4096];
|
|
unsigned long n, one;
|
|
prng_state nprng;
|
|
|
|
#ifdef LTC_PRNG_ENABLE_LTC_RNG
|
|
unsigned long before;
|
|
|
|
unsigned long (*previous)(unsigned char *, unsigned long , void (*)(void)) = ltc_rng;
|
|
ltc_rng = my_test_rng;
|
|
|
|
before = my_test_rng_read;
|
|
|
|
if ((err = rng_make_prng(128, find_prng("yarrow"), &yarrow_prng, NULL)) != CRYPT_OK) {
|
|
fprintf(stderr, "rng_make_prng with 'my_test_rng' failed: %s\n", error_to_string(err));
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
if (before == my_test_rng_read) {
|
|
fprintf(stderr, "somehow there was no read from the ltc_rng! %lu == %lu\n", before, my_test_rng_read);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
ltc_rng = previous;
|
|
#endif
|
|
|
|
/* test prngs (test, import/export) */
|
|
for (x = 0; prng_descriptor[x].name != NULL; x++) {
|
|
if(strstr(prng_descriptor[x].name, "no_prng") == prng_descriptor[x].name) continue;
|
|
err = CRYPT_OK;
|
|
DOX(prng_descriptor[x].test(), prng_descriptor[x].name);
|
|
DOX(prng_descriptor[x].start(&nprng), prng_descriptor[x].name);
|
|
DOX(prng_descriptor[x].add_entropy((unsigned char *)"helloworld12", 12, &nprng), prng_descriptor[x].name);
|
|
DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
|
|
n = sizeof(buf);
|
|
if (strcmp(prng_descriptor[x].name, "sprng")) {
|
|
one = 1;
|
|
if (prng_descriptor[x].pexport(buf, &one, &nprng) != CRYPT_BUFFER_OVERFLOW) {
|
|
fprintf(stderr, "Error testing pexport with a short buffer (%s)\n", prng_descriptor[x].name);
|
|
return CRYPT_ERROR;
|
|
}
|
|
}
|
|
DOX(prng_descriptor[x].pexport(buf, &n, &nprng), prng_descriptor[x].name);
|
|
prng_descriptor[x].done(&nprng);
|
|
DOX(prng_descriptor[x].pimport(buf, n, &nprng), prng_descriptor[x].name);
|
|
DOX(prng_descriptor[x].pimport(buf, 4096, &nprng), prng_descriptor[x].name); /* try to import larger data */
|
|
DOX(prng_descriptor[x].ready(&nprng), prng_descriptor[x].name);
|
|
if (prng_descriptor[x].read(buf, 100, &nprng) != 100) {
|
|
fprintf(stderr, "Error reading from imported PRNG (%s)!\n", prng_descriptor[x].name);
|
|
return CRYPT_ERROR;
|
|
}
|
|
prng_descriptor[x].done(&nprng);
|
|
}
|
|
return err;
|
|
}
|