guchar*
gkm_data_der_write_private_key_dsa_params (gcry_sexp_t skey, gsize *n_params)
{
GNode *asn = NULL;
gcry_mpi_t p, q, g;
guchar *result = NULL;
p = q = g = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "DSAParameters");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (skey, &p, "dsa", "p", NULL) ||
!gkm_sexp_extract_mpi (skey, &q, "dsa", "q", NULL) ||
!gkm_sexp_extract_mpi (skey, &g, "dsa", "g", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "p", NULL), p) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "q", NULL), q) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "g", NULL), g))
goto done;
result = egg_asn1x_encode (asn, egg_secure_realloc, n_params);
if (result == NULL)
g_warning ("couldn't encode private dsa params: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (p);
gcry_mpi_release (q);
gcry_mpi_release (g);
return result;
}
guchar*
gkm_data_der_write_public_key_rsa (gcry_sexp_t s_key, gsize *len)
{
GNode *asn = NULL;
gcry_mpi_t n, e;
guchar *result = NULL;
n = e = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "RSAPublicKey");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (s_key, &n, "rsa", "n", NULL) ||
!gkm_sexp_extract_mpi (s_key, &e, "rsa", "e", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "modulus", NULL), n) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "publicExponent", NULL), e))
goto done;
result = egg_asn1x_encode (asn, NULL, len);
if (result == NULL)
g_warning ("couldn't encode public rsa key: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (n);
gcry_mpi_release (e);
return result;
}
guchar*
gkm_data_der_write_private_key_dsa_part (gcry_sexp_t skey, gsize *n_key)
{
GNode *asn = NULL;
gcry_mpi_t x;
guchar *result = NULL;
x = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "DSAPrivatePart");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (skey, &x, "dsa", "x", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (asn, x))
goto done;
result = egg_asn1x_encode (asn, egg_secure_realloc, n_key);
if (result == NULL)
g_warning ("couldn't encode private dsa key: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (x);
return result;
}
guchar*
gkm_data_der_write_private_key_dsa (gcry_sexp_t s_key, gsize *len)
{
GNode *asn = NULL;
gcry_mpi_t p, q, g, y, x;
guchar *result = NULL;
p = q = g = y = x = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "DSAPrivateKey");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (s_key, &p, "dsa", "p", NULL) ||
!gkm_sexp_extract_mpi (s_key, &q, "dsa", "q", NULL) ||
!gkm_sexp_extract_mpi (s_key, &g, "dsa", "g", NULL) ||
!gkm_sexp_extract_mpi (s_key, &y, "dsa", "y", NULL) ||
!gkm_sexp_extract_mpi (s_key, &x, "dsa", "x", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "p", NULL), p) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "q", NULL), q) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "g", NULL), g) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "Y", NULL), y) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "priv", NULL), x))
goto done;
if (!egg_asn1x_set_integer_as_ulong (egg_asn1x_node (asn, "version", NULL), 0))
goto done;
result = egg_asn1x_encode (asn, egg_secure_realloc, len);
if (result == NULL)
g_warning ("couldn't encode private dsa key: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (p);
gcry_mpi_release (q);
gcry_mpi_release (g);
gcry_mpi_release (y);
gcry_mpi_release (x);
return result;
}
GBytes *
gkm_data_der_write_public_key_dsa (gcry_sexp_t s_key)
{
GNode *asn = NULL;
gcry_mpi_t p, q, g, y;
GBytes *result = NULL;
p = q = g = y = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "DSAPublicKey");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (s_key, &p, "dsa", "p", NULL) ||
!gkm_sexp_extract_mpi (s_key, &q, "dsa", "q", NULL) ||
!gkm_sexp_extract_mpi (s_key, &g, "dsa", "g", NULL) ||
!gkm_sexp_extract_mpi (s_key, &y, "dsa", "y", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "p", NULL), p) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "q", NULL), q) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "g", NULL), g) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "Y", NULL), y))
goto done;
egg_asn1x_set_integer_as_ulong (egg_asn1x_node (asn, "version", NULL), 0);
result = egg_asn1x_encode (asn, NULL);
if (result == NULL)
g_warning ("couldn't encode public dsa key: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (p);
gcry_mpi_release (q);
gcry_mpi_release (g);
gcry_mpi_release (y);
return result;
}
static void
test_asn1_integers (Test *test, gconstpointer unused)
{
GNode *asn;
gcry_mpi_t mpi, mpt;
GBytes *data;
gboolean ret;
asn = egg_asn1x_create (test_asn1_tab, "TestIntegers");
g_assert ("asn test structure is null" && asn != NULL);
/* Make a random number */
mpi = gcry_mpi_new (512);
g_return_if_fail (mpi);
gcry_mpi_randomize (mpi, 512, GCRY_WEAK_RANDOM);
/* Write the mpi out */
ret = gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "mpi", NULL), mpi);
g_assert ("couldn't write mpi to asn1" && ret);
/* Now encode the whole caboodle */
data = egg_asn1x_encode (asn, NULL);
g_assert ("encoding asn1 didn't work" && data != NULL);
egg_asn1x_destroy (asn);
/* Now decode it all nicely */
asn = egg_asn1x_create_and_decode (test_asn1_tab, "TestIntegers", data);
g_assert (asn != NULL);
ret = gkm_data_asn1_read_mpi (egg_asn1x_node (asn, "mpi", NULL), &mpt);
egg_asn1x_destroy (asn);
g_assert ("couldn't read mpi from asn1" && ret);
g_assert ("mpi returned is null" && mpt != NULL);
g_assert ("mpi is wrong number" && gcry_mpi_cmp (mpi, mpt) == 0);
g_bytes_unref (data);
gcry_mpi_release (mpi);
gcry_mpi_release (mpt);
}
guchar*
gkm_data_der_write_private_key_rsa (gcry_sexp_t s_key, gsize *n_key)
{
GNode *asn = NULL;
gcry_mpi_t n, e, d, p, q, u, e1, e2, tmp;
guchar *result = NULL;
n = e = d = p = q = u = e1 = e2 = tmp = NULL;
asn = egg_asn1x_create (pk_asn1_tab, "RSAPrivateKey");
g_return_val_if_fail (asn, NULL);
if (!gkm_sexp_extract_mpi (s_key, &n, "rsa", "n", NULL) ||
!gkm_sexp_extract_mpi (s_key, &e, "rsa", "e", NULL) ||
!gkm_sexp_extract_mpi (s_key, &d, "rsa", "d", NULL) ||
!gkm_sexp_extract_mpi (s_key, &p, "rsa", "p", NULL) ||
!gkm_sexp_extract_mpi (s_key, &q, "rsa", "q", NULL) ||
!gkm_sexp_extract_mpi (s_key, &u, "rsa", "u", NULL))
goto done;
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "modulus", NULL), n) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "publicExponent", NULL), e) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "privateExponent", NULL), d) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "prime1", NULL), p) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "prime2", NULL), q) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "coefficient", NULL), u))
goto done;
/* Calculate e1 and e2 */
tmp = gcry_mpi_snew (1024);
gcry_mpi_sub_ui (tmp, p, 1);
e1 = gcry_mpi_snew (1024);
gcry_mpi_mod (e1, d, tmp);
gcry_mpi_sub_ui (tmp, q, 1);
e2 = gcry_mpi_snew (1024);
gcry_mpi_mod (e2, d, tmp);
/* Write out calculated */
if (!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "exponent1", NULL), e1) ||
!gkm_data_asn1_write_mpi (egg_asn1x_node (asn, "exponent2", NULL), e2))
goto done;
/* Write out the version */
if (!egg_asn1x_set_integer_as_ulong (egg_asn1x_node (asn, "version", NULL), 0))
goto done;
result = egg_asn1x_encode (asn, egg_secure_realloc, n_key);
if (result == NULL)
g_warning ("couldn't encode private rsa key: %s", egg_asn1x_message (asn));
done:
egg_asn1x_destroy (asn);
gcry_mpi_release (n);
gcry_mpi_release (e);
gcry_mpi_release (d);
gcry_mpi_release (p);
gcry_mpi_release (q);
gcry_mpi_release (u);
gcry_mpi_release (tmp);
gcry_mpi_release (e1);
gcry_mpi_release (e2);
return result;
}
