/**DOCDOC*/
int
generate_ed_link_cert(const or_options_t *options, time_t now)
{
const tor_x509_cert_t *link = NULL, *id = NULL;
tor_cert_t *link_cert = NULL;
if (tor_tls_get_my_certs(1, &link, &id) < 0 || link == NULL) {
log_warn(LD_OR, "Can't get my x509 link cert.");
return -1;
}
const digests_t *digests = tor_x509_cert_get_cert_digests(link);
if (link_cert_cert &&
! EXPIRES_SOON(link_cert_cert, options->TestingLinkKeySlop) &&
fast_memeq(digests->d[DIGEST_SHA256], link_cert_cert->signed_key.pubkey,
DIGEST256_LEN)) {
return 0;
}
ed25519_public_key_t dummy_key;
memcpy(dummy_key.pubkey, digests->d[DIGEST_SHA256], DIGEST256_LEN);
link_cert = tor_cert_create(get_master_signing_keypair(),
CERT_TYPE_SIGNING_LINK,
&dummy_key,
now,
options->TestingLinkCertLifetime, 0);
if (link_cert) {
SET_CERT(link_cert_cert, link_cert);
}
return 0;
}
/**
* Retrieve our currently-in-use Ed25519 link certificate and id certificate,
* and, if they would expire soon (based on the time <b>now</b>, generate new
* certificates (without embedding the public part of the signing key inside).
* If <b>force</b> is true, always generate a new certificate.
*
* The signed_key from the current id->signing certificate will be used to
* sign the new key within newly generated X509 certificate.
*
* Returns -1 upon error. Otherwise, returns 0 upon success (either when the
* current certificate is still valid, or when a new certificate was
* successfully generated, or no certificate was needed).
*/
int
generate_ed_link_cert(const or_options_t *options, time_t now,
int force)
{
const tor_x509_cert_t *link_ = NULL, *id = NULL;
tor_cert_t *link_cert = NULL;
if (tor_tls_get_my_certs(1, &link_, &id) < 0 || link_ == NULL) {
if (!server_mode(options)) {
/* No need to make an Ed25519->Link cert: we are a client */
return 0;
}
log_warn(LD_OR, "Can't get my x509 link cert.");
return -1;
}
const common_digests_t *digests = tor_x509_cert_get_cert_digests(link_);
if (force == 0 &&
link_cert_cert &&
! EXPIRES_SOON(link_cert_cert, options->TestingLinkKeySlop) &&
fast_memeq(digests->d[DIGEST_SHA256], link_cert_cert->signed_key.pubkey,
DIGEST256_LEN)) {
return 0;
}
ed25519_public_key_t dummy_key;
memcpy(dummy_key.pubkey, digests->d[DIGEST_SHA256], DIGEST256_LEN);
link_cert = tor_cert_create(get_master_signing_keypair(),
CERT_TYPE_SIGNING_LINK,
&dummy_key,
now,
options->TestingLinkCertLifetime, 0);
if (link_cert) {
SET_CERT(link_cert_cert, link_cert);
}
return 0;
}
static void
test_routerkeys_ed_keys_init_all(void *arg)
{
(void)arg;
char *dir = tor_strdup(get_fname("test_ed_keys_init_all"));
char *keydir = tor_strdup(get_fname("test_ed_keys_init_all/KEYS"));
or_options_t *options = tor_malloc_zero(sizeof(or_options_t));
time_t now = time(NULL);
ed25519_public_key_t id;
ed25519_keypair_t sign, auth;
tor_cert_t *link_cert = NULL;
get_options_mutable()->ORPort_set = 1;
crypto_pk_t *rsa = pk_generate(0);
set_server_identity_key(rsa);
set_client_identity_key(rsa);
router_initialize_tls_context();
options->SigningKeyLifetime = 30*86400;
options->TestingAuthKeyLifetime = 2*86400;
options->TestingLinkCertLifetime = 2*86400;
options->TestingSigningKeySlop = 2*86400;
options->TestingAuthKeySlop = 2*3600;
options->TestingLinkKeySlop = 2*3600;
#ifdef _WIN32
mkdir(dir);
mkdir(keydir);
#else
mkdir(dir, 0700);
mkdir(keydir, 0700);
#endif /* defined(_WIN32) */
options->DataDirectory = dir;
options->KeyDirectory = keydir;
tt_int_op(1, OP_EQ, load_ed_keys(options, now));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now, 0));
tt_assert(get_master_identity_key());
tt_assert(get_master_identity_key());
tt_assert(get_master_signing_keypair());
tt_assert(get_current_auth_keypair());
tt_assert(get_master_signing_key_cert());
tt_assert(get_current_link_cert_cert());
tt_assert(get_current_auth_key_cert());
memcpy(&id, get_master_identity_key(), sizeof(id));
memcpy(&sign, get_master_signing_keypair(), sizeof(sign));
memcpy(&auth, get_current_auth_keypair(), sizeof(auth));
link_cert = tor_cert_dup(get_current_link_cert_cert());
/* Call load_ed_keys again, but nothing has changed. */
tt_int_op(0, OP_EQ, load_ed_keys(options, now));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now, 0));
tt_mem_op(&id, OP_EQ, get_master_identity_key(), sizeof(id));
tt_mem_op(&sign, OP_EQ, get_master_signing_keypair(), sizeof(sign));
tt_mem_op(&auth, OP_EQ, get_current_auth_keypair(), sizeof(auth));
tt_assert(tor_cert_eq(link_cert, get_current_link_cert_cert()));
/* Force a reload: we make new link/auth keys. */
routerkeys_free_all();
tt_int_op(1, OP_EQ, load_ed_keys(options, now));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now, 0));
tt_mem_op(&id, OP_EQ, get_master_identity_key(), sizeof(id));
tt_mem_op(&sign, OP_EQ, get_master_signing_keypair(), sizeof(sign));
tt_assert(tor_cert_eq(link_cert, get_current_link_cert_cert()));
tt_mem_op(&auth, OP_NE, get_current_auth_keypair(), sizeof(auth));
tt_assert(get_master_signing_key_cert());
tt_assert(get_current_link_cert_cert());
tt_assert(get_current_auth_key_cert());
tor_cert_free(link_cert);
link_cert = tor_cert_dup(get_current_link_cert_cert());
memcpy(&auth, get_current_auth_keypair(), sizeof(auth));
/* Force a link/auth-key regeneration by advancing time. */
tt_int_op(0, OP_EQ, load_ed_keys(options, now+3*86400));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now+3*86400, 0));
tt_mem_op(&id, OP_EQ, get_master_identity_key(), sizeof(id));
tt_mem_op(&sign, OP_EQ, get_master_signing_keypair(), sizeof(sign));
tt_assert(! tor_cert_eq(link_cert, get_current_link_cert_cert()));
tt_mem_op(&auth, OP_NE, get_current_auth_keypair(), sizeof(auth));
tt_assert(get_master_signing_key_cert());
tt_assert(get_current_link_cert_cert());
tt_assert(get_current_auth_key_cert());
tor_cert_free(link_cert);
link_cert = tor_cert_dup(get_current_link_cert_cert());
memcpy(&auth, get_current_auth_keypair(), sizeof(auth));
/* Force a signing-key regeneration by advancing time. */
tt_int_op(1, OP_EQ, load_ed_keys(options, now+100*86400));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now+100*86400, 0));
tt_mem_op(&id, OP_EQ, get_master_identity_key(), sizeof(id));
tt_mem_op(&sign, OP_NE, get_master_signing_keypair(), sizeof(sign));
tt_assert(! tor_cert_eq(link_cert, get_current_link_cert_cert()));
tt_mem_op(&auth, OP_NE, get_current_auth_keypair(), sizeof(auth));
tt_assert(get_master_signing_key_cert());
tt_assert(get_current_link_cert_cert());
tt_assert(get_current_auth_key_cert());
memcpy(&sign, get_master_signing_keypair(), sizeof(sign));
tor_cert_free(link_cert);
link_cert = tor_cert_dup(get_current_link_cert_cert());
memcpy(&auth, get_current_auth_keypair(), sizeof(auth));
/* Demonstrate that we can start up with no secret identity key */
routerkeys_free_all();
unlink(get_fname("test_ed_keys_init_all/KEYS/"
"ed25519_master_id_secret_key"));
tt_int_op(1, OP_EQ, load_ed_keys(options, now));
tt_int_op(0, OP_EQ, generate_ed_link_cert(options, now, 0));
tt_mem_op(&id, OP_EQ, get_master_identity_key(), sizeof(id));
tt_mem_op(&sign, OP_EQ, get_master_signing_keypair(), sizeof(sign));
tt_assert(! tor_cert_eq(link_cert, get_current_link_cert_cert()));
tt_mem_op(&auth, OP_NE, get_current_auth_keypair(), sizeof(auth));
tt_assert(get_master_signing_key_cert());
tt_assert(get_current_link_cert_cert());
tt_assert(get_current_auth_key_cert());
/* But we're in trouble if we have no id key and our signing key has
expired. */
log_global_min_severity_ = LOG_ERR; /* Suppress warnings.
* XXX (better way to do this)? */
routerkeys_free_all();
tt_int_op(-1, OP_EQ, load_ed_keys(options, now+200*86400));
done:
tor_free(dir);
tor_free(keydir);
tor_free(options);
tor_cert_free(link_cert);
routerkeys_free_all();
}
