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roca works

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This commit is contained in:
merlokk 2018-12-28 17:25:11 +02:00
parent 67b7edeb44
commit 625b696291
1 changed files with 42 additions and 43 deletions
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85
client/emv/emv_roca.c
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@ -22,35 +22,35 @@ static uint8_t g_primes[ROCA_PRINTS_LENGTH] = {
11, 13, 17, 19, 37, 53, 61, 71, 73, 79, 97, 103, 107, 109, 127, 151, 157
};
mbedtls_mpi* g_prints[ROCA_PRINTS_LENGTH];
mbedtls_mpi g_prints[ROCA_PRINTS_LENGTH];
void rocacheck_init(void) {
for (uint8_t i = 0; i < ROCA_PRINTS_LENGTH; i++)
mbedtls_mpi_init(g_prints[i]);
for (int i = 0; i < ROCA_PRINTS_LENGTH; i++)
mbedtls_mpi_init(&g_prints[i]);
mbedtls_mpi_read_string(g_prints[0], 10, "1026");
mbedtls_mpi_read_string(g_prints[1], 10, "5658");
mbedtls_mpi_read_string(g_prints[2], 10, "107286");
mbedtls_mpi_read_string(g_prints[3], 10, "199410");
mbedtls_mpi_read_string(g_prints[4], 10, "67109890");
mbedtls_mpi_read_string(g_prints[5], 10, "5310023542746834");
mbedtls_mpi_read_string(g_prints[6], 10, "1455791217086302986");
mbedtls_mpi_read_string(g_prints[7], 10, "20052041432995567486");
mbedtls_mpi_read_string(g_prints[8], 10, "6041388139249378920330");
mbedtls_mpi_read_string(g_prints[9], 10, "207530445072488465666");
mbedtls_mpi_read_string(g_prints[10], 10, "79228162521181866724264247298");
mbedtls_mpi_read_string(g_prints[11], 10, "1760368345969468176824550810518");
mbedtls_mpi_read_string(g_prints[12], 10, "50079290986288516948354744811034");
mbedtls_mpi_read_string(g_prints[13], 10, "473022961816146413042658758988474");
mbedtls_mpi_read_string(g_prints[14], 10, "144390480366845522447407333004847678774");
mbedtls_mpi_read_string(g_prints[15], 10, "1800793591454480341970779146165214289059119882");
mbedtls_mpi_read_string(g_prints[16], 10, "126304807362733370595828809000324029340048915994");
mbedtls_mpi_read_string(&g_prints[0], 10, "1026");
mbedtls_mpi_read_string(&g_prints[1], 10, "5658");
mbedtls_mpi_read_string(&g_prints[2], 10, "107286");
mbedtls_mpi_read_string(&g_prints[3], 10, "199410");
mbedtls_mpi_read_string(&g_prints[4], 10, "67109890");
mbedtls_mpi_read_string(&g_prints[5], 10, "5310023542746834");
mbedtls_mpi_read_string(&g_prints[6], 10, "1455791217086302986");
mbedtls_mpi_read_string(&g_prints[7], 10, "20052041432995567486");
mbedtls_mpi_read_string(&g_prints[8], 10, "6041388139249378920330");
mbedtls_mpi_read_string(&g_prints[9], 10, "207530445072488465666");
mbedtls_mpi_read_string(&g_prints[10], 10, "79228162521181866724264247298");
mbedtls_mpi_read_string(&g_prints[11], 10, "1760368345969468176824550810518");
mbedtls_mpi_read_string(&g_prints[12], 10, "50079290986288516948354744811034");
mbedtls_mpi_read_string(&g_prints[13], 10, "473022961816146413042658758988474");
mbedtls_mpi_read_string(&g_prints[14], 10, "144390480366845522447407333004847678774");
mbedtls_mpi_read_string(&g_prints[15], 10, "1800793591454480341970779146165214289059119882");
mbedtls_mpi_read_string(&g_prints[16], 10, "126304807362733370595828809000324029340048915994");
}
void rocacheck_cleanup(void) {
for (uint8_t i = 0; i < ROCA_PRINTS_LENGTH; i++)
mbedtls_mpi_free(g_prints[i]);
for (int i = 0; i < ROCA_PRINTS_LENGTH; i++)
mbedtls_mpi_free(&g_prints[i]);
}
int bitand_is_zero( mbedtls_mpi* a, mbedtls_mpi* b ) {
@ -75,50 +75,49 @@ mbedtls_mpi_uint mpi_get_uint(const mbedtls_mpi *X) {
bool emv_rocacheck(const unsigned char *buf, size_t buflen) {
mbedtls_mpi *t_modulus = NULL;
mbedtls_mpi_init(t_modulus);
mbedtls_mpi t_modulus;
mbedtls_mpi_init(&t_modulus);
bool ret = true;
rocacheck_init();
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary(t_modulus, buf, buflen) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_binary(&t_modulus, buf, buflen) );
mbedtls_mpi_init(&g_one);
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string(&g_one, 10, "1") );
for (int i = 0; i < ROCA_PRINTS_LENGTH; i++) {
printf("--p:%d\n", i);
mbedtls_mpi* t_temp = NULL;
mbedtls_mpi* t_prime = NULL;
mbedtls_mpi* g_one = NULL;
mbedtls_mpi t_temp;
mbedtls_mpi t_prime;
mbedtls_mpi g_one;
mbedtls_mpi_init(g_one);
mbedtls_mpi_init(t_temp);
mbedtls_mpi_init(t_prime);
mbedtls_mpi_init(&t_temp);
mbedtls_mpi_init(&t_prime);
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int(&t_prime, &t_prime, g_primes[i]) );
MBEDTLS_MPI_CHK( mbedtls_mpi_read_string(g_one, 10, "1") );
MBEDTLS_MPI_CHK( mbedtls_mpi_add_int(t_prime, t_prime, g_primes[i]) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi(&t_temp, &t_modulus, &t_prime) );
MBEDTLS_MPI_CHK( mbedtls_mpi_mod_mpi(t_temp, t_modulus, t_prime) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l(&g_one, mpi_get_uint(&t_temp)) );
MBEDTLS_MPI_CHK( mbedtls_mpi_shift_l(g_one, mpi_get_uint(t_temp)) );
if (bitand_is_zero(t_temp, g_prints[i])) {
if (bitand_is_zero(&t_temp, &g_prints[i])) {
PrintAndLogEx(FAILED, "No fingerprint found\n");
ret = false;
goto cleanup;
}
mbedtls_mpi_free(g_one);
mbedtls_mpi_free(t_temp);
mbedtls_mpi_free(t_prime);
mbedtls_mpi_free(&g_one);
mbedtls_mpi_free(&t_temp);
mbedtls_mpi_free(&t_prime);
}
PrintAndLogEx(SUCCESS, "Fingerprint found!\n");
cleanup:
if (t_modulus)
mbedtls_mpi_free(t_modulus);
mbedtls_mpi_free(&t_modulus);
rocacheck_cleanup();
return ret;