Exemplo n.º 1
0
static void
public_fuzz(struct sshkey *k)
{
	struct sshkey *k1;
	struct sshbuf *buf;
	struct fuzz *fuzz;

	ASSERT_PTR_NE(buf = sshbuf_new(), NULL);
	ASSERT_INT_EQ(sshkey_putb(k, buf), 0);
	/* XXX need a way to run the tests in "slow, but complete" mode */
	fuzz = fuzz_begin(FUZZ_1_BIT_FLIP | /* XXX too slow FUZZ_2_BIT_FLIP | */
	    FUZZ_1_BYTE_FLIP | /* XXX too slow FUZZ_2_BYTE_FLIP | */
	    FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END,
	    sshbuf_mutable_ptr(buf), sshbuf_len(buf));
	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(buf), sshbuf_len(buf),
	    &k1), 0);
	sshkey_free(k1);
	sshbuf_free(buf);
	TEST_ONERROR(onerror, fuzz);
	for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
		if (sshkey_from_blob(fuzz_ptr(fuzz), fuzz_len(fuzz), &k1) == 0)
			sshkey_free(k1);
	}
	fuzz_cleanup(fuzz);
}
Exemplo n.º 2
0
static void
public_fuzz(struct sshkey *k)
{
	struct sshkey *k1;
	struct sshbuf *buf;
	struct fuzz *fuzz;
	u_int fuzzers = FUZZ_1_BIT_FLIP | FUZZ_1_BYTE_FLIP |
	    FUZZ_TRUNCATE_START | FUZZ_TRUNCATE_END;

	if (test_is_fast())
		fuzzers &= ~FUZZ_1_BIT_FLIP;
	if (test_is_slow())
		fuzzers |= FUZZ_2_BIT_FLIP | FUZZ_2_BYTE_FLIP;
	ASSERT_PTR_NE(buf = sshbuf_new(), NULL);
	ASSERT_INT_EQ(sshkey_putb(k, buf), 0);
	fuzz = fuzz_begin(fuzzers, sshbuf_mutable_ptr(buf), sshbuf_len(buf));
	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(buf), sshbuf_len(buf),
	    &k1), 0);
	sshkey_free(k1);
	sshbuf_free(buf);
	TEST_ONERROR(onerror, fuzz);
	for(; !fuzz_done(fuzz); fuzz_next(fuzz)) {
		if (sshkey_from_blob(fuzz_ptr(fuzz), fuzz_len(fuzz), &k1) == 0)
			sshkey_free(k1);
	}
	fuzz_cleanup(fuzz);
}
Exemplo n.º 3
0
static void
build_cert(struct sshbuf *b, const struct sshkey *k, const char *type,
    const struct sshkey *sign_key, const struct sshkey *ca_key,
    const char *sig_alg)
{
	struct sshbuf *ca_buf, *pk, *principals, *critopts, *exts;
	u_char *sigblob;
	size_t siglen;

	ca_buf = sshbuf_new();
	ASSERT_PTR_NE(ca_buf, NULL);
	ASSERT_INT_EQ(sshkey_putb(ca_key, ca_buf), 0);

	/*
	 * Get the public key serialisation by rendering the key and skipping
	 * the type string. This is a bit of a hack :/
	 */
	pk = sshbuf_new();
	ASSERT_PTR_NE(pk, NULL);
	ASSERT_INT_EQ(sshkey_putb_plain(k, pk), 0);
	ASSERT_INT_EQ(sshbuf_skip_string(pk), 0);

	principals = sshbuf_new();
	ASSERT_PTR_NE(principals, NULL);
	ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gsamsa"), 0);
	ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gregor"), 0);

	critopts = sshbuf_new();
	ASSERT_PTR_NE(critopts, NULL);
	put_opt(critopts, "force-command", "/usr/local/bin/nethack");
	put_opt(critopts, "source-address", "192.168.0.0/24,127.0.0.1,::1");

	exts = sshbuf_new();
	ASSERT_PTR_NE(exts, NULL);
	put_opt(critopts, "permit-X11-forwarding", NULL);

	ASSERT_INT_EQ(sshbuf_put_cstring(b, type), 0);
	ASSERT_INT_EQ(sshbuf_put_cstring(b, "noncenoncenonce!"), 0); /* nonce */
	ASSERT_INT_EQ(sshbuf_putb(b, pk), 0); /* public key serialisation */
	ASSERT_INT_EQ(sshbuf_put_u64(b, 1234), 0); /* serial */
	ASSERT_INT_EQ(sshbuf_put_u32(b, SSH2_CERT_TYPE_USER), 0); /* type */
	ASSERT_INT_EQ(sshbuf_put_cstring(b, "gregor"), 0); /* key ID */
	ASSERT_INT_EQ(sshbuf_put_stringb(b, principals), 0); /* principals */
	ASSERT_INT_EQ(sshbuf_put_u64(b, 0), 0); /* start */
	ASSERT_INT_EQ(sshbuf_put_u64(b, 0xffffffffffffffffULL), 0); /* end */
	ASSERT_INT_EQ(sshbuf_put_stringb(b, critopts), 0); /* options */
	ASSERT_INT_EQ(sshbuf_put_stringb(b, exts), 0); /* extensions */
	ASSERT_INT_EQ(sshbuf_put_string(b, NULL, 0), 0); /* reserved */
	ASSERT_INT_EQ(sshbuf_put_stringb(b, ca_buf), 0); /* signature key */
	ASSERT_INT_EQ(sshkey_sign(sign_key, &sigblob, &siglen,
	    sshbuf_ptr(b), sshbuf_len(b), sig_alg, 0), 0);
	ASSERT_INT_EQ(sshbuf_put_string(b, sigblob, siglen), 0); /* signature */

	free(sigblob);
	sshbuf_free(ca_buf);
	sshbuf_free(exts);
	sshbuf_free(critopts);
	sshbuf_free(principals);
	sshbuf_free(pk);
}
Exemplo n.º 4
0
void
sshkey_tests(void)
{
	struct sshkey *k1, *k2, *k3, *k4, *kr, *kd, *kf;
#ifdef OPENSSL_HAS_ECC
	struct sshkey *ke;
#endif
	struct sshbuf *b;

	TEST_START("new invalid");
	k1 = sshkey_new(-42);
	ASSERT_PTR_EQ(k1, NULL);
	TEST_DONE();

	TEST_START("new/free KEY_UNSPEC");
	k1 = sshkey_new(KEY_UNSPEC);
	ASSERT_PTR_NE(k1, NULL);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("new/free KEY_RSA1");
	k1 = sshkey_new(KEY_RSA1);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(k1->rsa, NULL);
	ASSERT_PTR_NE(k1->rsa->n, NULL);
	ASSERT_PTR_NE(k1->rsa->e, NULL);
	ASSERT_PTR_EQ(k1->rsa->p, NULL);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("new/free KEY_RSA");
	k1 = sshkey_new(KEY_RSA);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(k1->rsa, NULL);
	ASSERT_PTR_NE(k1->rsa->n, NULL);
	ASSERT_PTR_NE(k1->rsa->e, NULL);
	ASSERT_PTR_EQ(k1->rsa->p, NULL);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("new/free KEY_DSA");
	k1 = sshkey_new(KEY_DSA);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(k1->dsa, NULL);
	ASSERT_PTR_NE(k1->dsa->g, NULL);
	ASSERT_PTR_EQ(k1->dsa->priv_key, NULL);
	sshkey_free(k1);
	TEST_DONE();

#ifdef OPENSSL_HAS_ECC
	TEST_START("new/free KEY_ECDSA");
	k1 = sshkey_new(KEY_ECDSA);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_EQ(k1->ecdsa, NULL);  /* Can't allocate without NID */
	sshkey_free(k1);
	TEST_DONE();
#endif

	TEST_START("new/free KEY_ED25519");
	k1 = sshkey_new(KEY_ED25519);
	ASSERT_PTR_NE(k1, NULL);
	/* These should be blank until key loaded or generated */
	ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
	ASSERT_PTR_EQ(k1->ed25519_pk, NULL);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("new_private KEY_RSA");
	k1 = sshkey_new_private(KEY_RSA);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(k1->rsa, NULL);
	ASSERT_PTR_NE(k1->rsa->n, NULL);
	ASSERT_PTR_NE(k1->rsa->e, NULL);
	ASSERT_PTR_NE(k1->rsa->p, NULL);
	ASSERT_INT_EQ(sshkey_add_private(k1), 0);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("new_private KEY_DSA");
	k1 = sshkey_new_private(KEY_DSA);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(k1->dsa, NULL);
	ASSERT_PTR_NE(k1->dsa->g, NULL);
	ASSERT_PTR_NE(k1->dsa->priv_key, NULL);
	ASSERT_INT_EQ(sshkey_add_private(k1), 0);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("generate KEY_RSA too small modulus");
	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 128, &k1),
	    SSH_ERR_INVALID_ARGUMENT);
	ASSERT_PTR_EQ(k1, NULL);
	TEST_DONE();

	TEST_START("generate KEY_RSA too large modulus");
	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1 << 20, &k1),
	    SSH_ERR_INVALID_ARGUMENT);
	ASSERT_PTR_EQ(k1, NULL);
	TEST_DONE();

	TEST_START("generate KEY_DSA wrong bits");
	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 2048, &k1),
	    SSH_ERR_INVALID_ARGUMENT);
	ASSERT_PTR_EQ(k1, NULL);
	sshkey_free(k1);
	TEST_DONE();

#ifdef OPENSSL_HAS_ECC
	TEST_START("generate KEY_ECDSA wrong bits");
	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 42, &k1),
	    SSH_ERR_INVALID_ARGUMENT);
	ASSERT_PTR_EQ(k1, NULL);
	sshkey_free(k1);
	TEST_DONE();
#endif

	TEST_START("generate KEY_RSA");
	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 767, &kr),
	    SSH_ERR_INVALID_ARGUMENT);
	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &kr), 0);
	ASSERT_PTR_NE(kr, NULL);
	ASSERT_PTR_NE(kr->rsa, NULL);
	ASSERT_PTR_NE(kr->rsa->n, NULL);
	ASSERT_PTR_NE(kr->rsa->e, NULL);
	ASSERT_PTR_NE(kr->rsa->p, NULL);
	ASSERT_INT_EQ(BN_num_bits(kr->rsa->n), 1024);
	TEST_DONE();

	TEST_START("generate KEY_DSA");
	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &kd), 0);
	ASSERT_PTR_NE(kd, NULL);
	ASSERT_PTR_NE(kd->dsa, NULL);
	ASSERT_PTR_NE(kd->dsa->g, NULL);
	ASSERT_PTR_NE(kd->dsa->priv_key, NULL);
	TEST_DONE();

#ifdef OPENSSL_HAS_ECC
	TEST_START("generate KEY_ECDSA");
	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &ke), 0);
	ASSERT_PTR_NE(ke, NULL);
	ASSERT_PTR_NE(ke->ecdsa, NULL);
	ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL);
	ASSERT_PTR_NE(EC_KEY_get0_private_key(ke->ecdsa), NULL);
	TEST_DONE();
#endif

	TEST_START("generate KEY_ED25519");
	ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &kf), 0);
	ASSERT_PTR_NE(kf, NULL);
	ASSERT_INT_EQ(kf->type, KEY_ED25519);
	ASSERT_PTR_NE(kf->ed25519_pk, NULL);
	ASSERT_PTR_NE(kf->ed25519_sk, NULL);
	TEST_DONE();

	TEST_START("demote KEY_RSA");
	ASSERT_INT_EQ(sshkey_demote(kr, &k1), 0);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(kr, k1);
	ASSERT_INT_EQ(k1->type, KEY_RSA);
	ASSERT_PTR_NE(k1->rsa, NULL);
	ASSERT_PTR_NE(k1->rsa->n, NULL);
	ASSERT_PTR_NE(k1->rsa->e, NULL);
	ASSERT_PTR_EQ(k1->rsa->p, NULL);
	TEST_DONE();

	TEST_START("equal KEY_RSA/demoted KEY_RSA");
	ASSERT_INT_EQ(sshkey_equal(kr, k1), 1);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("demote KEY_DSA");
	ASSERT_INT_EQ(sshkey_demote(kd, &k1), 0);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(kd, k1);
	ASSERT_INT_EQ(k1->type, KEY_DSA);
	ASSERT_PTR_NE(k1->dsa, NULL);
	ASSERT_PTR_NE(k1->dsa->g, NULL);
	ASSERT_PTR_EQ(k1->dsa->priv_key, NULL);
	TEST_DONE();

	TEST_START("equal KEY_DSA/demoted KEY_DSA");
	ASSERT_INT_EQ(sshkey_equal(kd, k1), 1);
	sshkey_free(k1);
	TEST_DONE();

#ifdef OPENSSL_HAS_ECC
	TEST_START("demote KEY_ECDSA");
	ASSERT_INT_EQ(sshkey_demote(ke, &k1), 0);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(ke, k1);
	ASSERT_INT_EQ(k1->type, KEY_ECDSA);
	ASSERT_PTR_NE(k1->ecdsa, NULL);
	ASSERT_INT_EQ(k1->ecdsa_nid, ke->ecdsa_nid);
	ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL);
	ASSERT_PTR_EQ(EC_KEY_get0_private_key(k1->ecdsa), NULL);
	TEST_DONE();

	TEST_START("equal KEY_ECDSA/demoted KEY_ECDSA");
	ASSERT_INT_EQ(sshkey_equal(ke, k1), 1);
	sshkey_free(k1);
	TEST_DONE();
#endif

	TEST_START("demote KEY_ED25519");
	ASSERT_INT_EQ(sshkey_demote(kf, &k1), 0);
	ASSERT_PTR_NE(k1, NULL);
	ASSERT_PTR_NE(kf, k1);
	ASSERT_INT_EQ(k1->type, KEY_ED25519);
	ASSERT_PTR_NE(k1->ed25519_pk, NULL);
	ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
	TEST_DONE();

	TEST_START("equal KEY_ED25519/demoted KEY_ED25519");
	ASSERT_INT_EQ(sshkey_equal(kf, k1), 1);
	sshkey_free(k1);
	TEST_DONE();

	TEST_START("equal mismatched key types");
	ASSERT_INT_EQ(sshkey_equal(kd, kr), 0);
#ifdef OPENSSL_HAS_ECC
	ASSERT_INT_EQ(sshkey_equal(kd, ke), 0);
	ASSERT_INT_EQ(sshkey_equal(kr, ke), 0);
	ASSERT_INT_EQ(sshkey_equal(ke, kf), 0);
#endif
	ASSERT_INT_EQ(sshkey_equal(kd, kf), 0);
	TEST_DONE();

	TEST_START("equal different keys");
	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &k1), 0);
	ASSERT_INT_EQ(sshkey_equal(kr, k1), 0);
	sshkey_free(k1);
	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &k1), 0);
	ASSERT_INT_EQ(sshkey_equal(kd, k1), 0);
	sshkey_free(k1);
#ifdef OPENSSL_HAS_ECC
	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k1), 0);
	ASSERT_INT_EQ(sshkey_equal(ke, k1), 0);
	sshkey_free(k1);
#endif
	ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k1), 0);
	ASSERT_INT_EQ(sshkey_equal(kf, k1), 0);
	sshkey_free(k1);
	TEST_DONE();

	sshkey_free(kr);
	sshkey_free(kd);
#ifdef OPENSSL_HAS_ECC
	sshkey_free(ke);
#endif
	sshkey_free(kf);

	TEST_START("certify key");
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_1.pub"),
	    &k1, NULL), 0);
	k2 = get_private("ed25519_2");
	ASSERT_INT_EQ(sshkey_to_certified(k1), 0);
	ASSERT_PTR_NE(k1->cert, NULL);
	k1->cert->type = SSH2_CERT_TYPE_USER;
	k1->cert->serial = 1234;
	k1->cert->key_id = strdup("estragon");
	ASSERT_PTR_NE(k1->cert->key_id, NULL);
	k1->cert->principals = calloc(4, sizeof(*k1->cert->principals));
	ASSERT_PTR_NE(k1->cert->principals, NULL);
	k1->cert->principals[0] = strdup("estragon");
	k1->cert->principals[1] = strdup("vladimir");
	k1->cert->principals[2] = strdup("pozzo");
	k1->cert->principals[3] = strdup("lucky");
	ASSERT_PTR_NE(k1->cert->principals[0], NULL);
	ASSERT_PTR_NE(k1->cert->principals[1], NULL);
	ASSERT_PTR_NE(k1->cert->principals[2], NULL);
	ASSERT_PTR_NE(k1->cert->principals[3], NULL);
	k1->cert->valid_after = 0;
	k1->cert->valid_before = (u_int64_t)-1;
	k1->cert->critical = sshbuf_new();
	ASSERT_PTR_NE(k1->cert->critical, NULL);
	k1->cert->extensions = sshbuf_new();
	ASSERT_PTR_NE(k1->cert->extensions, NULL);
	put_opt(k1->cert->critical, "force-command", "/usr/bin/true");
	put_opt(k1->cert->critical, "source-address", "127.0.0.1");
	put_opt(k1->cert->extensions, "permit-X11-forwarding", NULL);
	put_opt(k1->cert->extensions, "permit-agent-forwarding", NULL);
	ASSERT_INT_EQ(sshkey_from_private(k2, &k1->cert->signature_key), 0);
	ASSERT_INT_EQ(sshkey_certify(k1, k2), 0);
	b = sshbuf_new();
	ASSERT_PTR_NE(b, NULL);
	ASSERT_INT_EQ(sshkey_putb(k1, b), 0);
	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k3), 0);

	sshkey_free(k1);
	sshkey_free(k2);
	sshkey_free(k3);
	sshbuf_reset(b);
	TEST_DONE();

	TEST_START("sign and verify RSA");
	k1 = get_private("rsa_1");
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
	    NULL), 0);
	signature_tests(k1, k2);
	sshkey_free(k1);
	sshkey_free(k2);
	TEST_DONE();

	TEST_START("sign and verify DSA");
	k1 = get_private("dsa_1");
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("dsa_2.pub"), &k2,
	    NULL), 0);
	signature_tests(k1, k2);
	sshkey_free(k1);
	sshkey_free(k2);
	TEST_DONE();

#ifdef OPENSSL_HAS_ECC
#ifndef WIN32_FIXME
	TEST_START("sign and verify ECDSA");
	k1 = get_private("ecdsa_1");
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ecdsa_2.pub"), &k2,
	    NULL), 0);
	signature_tests(k1, k2);
	sshkey_free(k1);
	sshkey_free(k2);
	TEST_DONE();
#endif
#endif

	TEST_START("sign and verify ED25519");
	k1 = get_private("ed25519_1");
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_2.pub"), &k2,
	    NULL), 0);
	signature_tests(k1, k2);
	sshkey_free(k1);
	sshkey_free(k2);
	TEST_DONE();

	TEST_START("nested certificate");
	ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0);
	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_1.pub"), &k2,
	    NULL), 0);
	k3 = get_private("rsa_1");
	build_cert(b, k2, "*****@*****.**", k3, k1);
	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k4),
	    SSH_ERR_KEY_CERT_INVALID_SIGN_KEY);
	ASSERT_PTR_EQ(k4, NULL);
	sshkey_free(k1);
	sshkey_free(k2);
	sshkey_free(k3);
	sshbuf_free(b);
	TEST_DONE();

}