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test: HS v3 descriptor decoding with client authorization

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Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
Suphanat Chunhapanya 2018-04-22 01:13:50 +07:00 committed by David Goulet
parent 7acb720027
commit 69fb25b0f6
2 changed files with 96 additions and 0 deletions
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26
src/test/hs_test_helpers.c
View File

@ -226,6 +226,32 @@ hs_helper_desc_equal(const hs_descriptor_t *desc1,
* encrypted blob. As contrast to the decoding process where we populate a
* descriptor object. */
/* Superencrypted data section. */
tt_mem_op(desc1->superencrypted_data.auth_ephemeral_pubkey.public_key, OP_EQ,
desc2->superencrypted_data.auth_ephemeral_pubkey.public_key,
CURVE25519_PUBKEY_LEN);
/* Auth clients. */
{
tt_assert(desc1->superencrypted_data.clients);
tt_assert(desc2->superencrypted_data.clients);
tt_int_op(smartlist_len(desc1->superencrypted_data.clients), ==,
smartlist_len(desc2->superencrypted_data.clients));
for (int i=0;
i < smartlist_len(desc1->superencrypted_data.clients);
i++) {
hs_desc_authorized_client_t
*client1 = smartlist_get(desc1->superencrypted_data.clients, i),
*client2 = smartlist_get(desc2->superencrypted_data.clients, i);
tor_memeq(client1->client_id, client2->client_id,
sizeof(client1->client_id));
tor_memeq(client1->iv, client2->iv,
sizeof(client1->iv));
tor_memeq(client1->encrypted_cookie, client2->encrypted_cookie,
sizeof(client1->encrypted_cookie));
}
}
/* Encrypted data section. */
tt_uint_op(desc1->encrypted_data.create2_ntor, ==,
desc2->encrypted_data.create2_ntor);

70
src/test/test_hs_descriptor.c
View File

@ -330,6 +330,7 @@ static void
test_decode_descriptor(void *arg)
{
int ret;
int i;
char *encoded = NULL;
ed25519_keypair_t signing_kp;
hs_descriptor_t *desc = NULL;
@ -381,6 +382,75 @@ test_decode_descriptor(void *arg)
tt_assert(decoded);
}
/* Decode a descriptor with auth clients. */
{
uint8_t descriptor_cookie[HS_DESC_DESCRIPTOR_COOKIE_LEN];
curve25519_keypair_t auth_ephemeral_kp;
curve25519_keypair_t client_kp, invalid_client_kp;
smartlist_t *clients;
hs_desc_authorized_client_t *client, *fake_client;
client = tor_malloc_zero(sizeof(hs_desc_authorized_client_t));
/* Prepare all the keys needed to build the auth client. */
curve25519_keypair_generate(&auth_ephemeral_kp, 0);
curve25519_keypair_generate(&client_kp, 0);
curve25519_keypair_generate(&invalid_client_kp, 0);
crypto_strongest_rand(descriptor_cookie, HS_DESC_DESCRIPTOR_COOKIE_LEN);
memcpy(&desc->superencrypted_data.auth_ephemeral_pubkey,
&auth_ephemeral_kp.pubkey, CURVE25519_PUBKEY_LEN);
/* Build and add the auth client to the descriptor. */
clients = desc->superencrypted_data.clients;
if (!clients) {
clients = smartlist_new();
}
hs_desc_build_authorized_client(&client_kp.pubkey,
&auth_ephemeral_kp.seckey,
descriptor_cookie, client);
smartlist_add(clients, client);
/* We need to add fake auth clients here. */
for (i=0; i < 15; ++i) {
fake_client = tor_malloc_zero(sizeof(hs_desc_authorized_client_t));
hs_desc_build_fake_authorized_client(fake_client);
smartlist_add(clients, fake_client);
}
desc->superencrypted_data.clients = clients;
/* Test the encoding/decoding in the following lines. */
hs_helper_get_subcred_from_identity_keypair(&signing_kp,
subcredential);
tor_free(encoded);
ret = hs_desc_encode_descriptor(desc, &signing_kp,
descriptor_cookie, &encoded);
tt_int_op(ret, OP_EQ, 0);
tt_assert(encoded);
/* If we do not have the client secret key, the decoding must fail. */
hs_descriptor_free(decoded);
ret = hs_desc_decode_descriptor(encoded, subcredential,
NULL, &decoded);
tt_int_op(ret, OP_LT, 0);
tt_assert(!decoded);
/* If we have an invalid client secret key, the decoding must fail. */
hs_descriptor_free(decoded);
ret = hs_desc_decode_descriptor(encoded, subcredential,
&invalid_client_kp.seckey, &decoded);
tt_int_op(ret, OP_LT, 0);
tt_assert(!decoded);
/* If we have the client secret key, the decoding must succeed and the
* decoded descriptor must be correct. */
ret = hs_desc_decode_descriptor(encoded, subcredential,
&client_kp.seckey, &decoded);
tt_int_op(ret, OP_EQ, 0);
tt_assert(decoded);
hs_helper_desc_equal(desc, decoded);
}
done:
hs_descriptor_free(desc);
hs_descriptor_free(desc_no_ip);