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-rwxr-xr-xregress/unittests/sshkey/mktestdata.sh4
-rw-r--r--regress/unittests/sshkey/test_sshkey.c175
2 files changed, 167 insertions, 12 deletions
diff --git a/regress/unittests/sshkey/mktestdata.sh b/regress/unittests/sshkey/mktestdata.sh
index ee1fe396..09165af0 100755
--- a/regress/unittests/sshkey/mktestdata.sh
+++ b/regress/unittests/sshkey/mktestdata.sh
@@ -1,5 +1,5 @@
#!/bin/sh
-# $OpenBSD: mktestdata.sh,v 1.3 2014/07/22 23:57:40 dtucker Exp $
+# $OpenBSD: mktestdata.sh,v 1.4 2015/01/18 19:54:46 djm Exp $
PW=mekmitasdigoat
@@ -187,4 +187,6 @@ ssh-keygen -Bf dsa_2 | awk '{print $2}' > dsa_2.fp.bb
ssh-keygen -Bf ecdsa_2 | awk '{print $2}' > ecdsa_2.fp.bb
ssh-keygen -Bf ed25519_2 | awk '{print $2}' > ed25519_2.fp.bb
+# XXX Extend ssh-keygen to do detached signatures (better to test/fuzz against)
+
echo "$PW" > pw
diff --git a/regress/unittests/sshkey/test_sshkey.c b/regress/unittests/sshkey/test_sshkey.c
index ef0c6795..247d4201 100644
--- a/regress/unittests/sshkey/test_sshkey.c
+++ b/regress/unittests/sshkey/test_sshkey.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: test_sshkey.c,v 1.1 2014/06/24 01:14:18 djm Exp $ */
+/* $OpenBSD: test_sshkey.c,v 1.2 2015/01/18 19:54:46 djm Exp $ */
/*
* Regress test for sshkey.h key management API
*
@@ -37,6 +37,20 @@
void sshkey_tests(void);
static void
+put_opt(struct sshbuf *b, const char *name, const char *value)
+{
+ struct sshbuf *sect;
+
+ sect = sshbuf_new();
+ ASSERT_PTR_NE(sect, NULL);
+ ASSERT_INT_EQ(sshbuf_put_cstring(b, name), 0);
+ if (value != NULL)
+ ASSERT_INT_EQ(sshbuf_put_cstring(sect, value), 0);
+ ASSERT_INT_EQ(sshbuf_put_stringb(b, sect), 0);
+ sshbuf_free(sect);
+}
+
+static void
build_cert(struct sshbuf *b, const struct sshkey *k, const char *type,
const struct sshkey *sign_key, const struct sshkey *ca_key)
{
@@ -45,6 +59,7 @@ build_cert(struct sshbuf *b, const struct sshkey *k, const char *type,
size_t siglen;
ca_buf = sshbuf_new();
+ ASSERT_PTR_NE(ca_buf, NULL);
ASSERT_INT_EQ(sshkey_to_blob_buf(ca_key, ca_buf), 0);
/*
@@ -52,18 +67,23 @@ build_cert(struct sshbuf *b, const struct sshkey *k, const char *type,
* the type string. This is a bit of a hack :/
*/
pk = sshbuf_new();
+ ASSERT_PTR_NE(pk, NULL);
ASSERT_INT_EQ(sshkey_plain_to_blob_buf(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();
- /* XXX fill this in */
+ 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();
- /* XXX fill this in */
+ 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 */
@@ -90,6 +110,67 @@ build_cert(struct sshbuf *b, const struct sshkey *k, const char *type,
sshbuf_free(pk);
}
+static void
+signature_test(struct sshkey *k, struct sshkey *bad, const u_char *d, size_t l)
+{
+ size_t len;
+ u_char *sig;
+
+ ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, 0), 0);
+ ASSERT_SIZE_T_GT(len, 8);
+ ASSERT_PTR_NE(sig, NULL);
+ ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, 0), 0);
+ ASSERT_INT_NE(sshkey_verify(bad, sig, len, d, l, 0), 0);
+ /* Fuzz test is more comprehensive, this is just a smoke test */
+ sig[len - 5] ^= 0x10;
+ ASSERT_INT_NE(sshkey_verify(k, sig, len, d, l, 0), 0);
+ free(sig);
+}
+
+static void
+banana(u_char *s, size_t l)
+{
+ size_t o;
+ const u_char the_banana[] = { 'b', 'a', 'n', 'a', 'n', 'a' };
+
+ for (o = 0; o < l; o += sizeof(the_banana)) {
+ if (l - o < sizeof(the_banana)) {
+ memcpy(s + o, "nanananana", l - o);
+ break;
+ }
+ memcpy(s + o, banana, sizeof(the_banana));
+ }
+}
+
+static void
+signature_tests(struct sshkey *k, struct sshkey *bad)
+{
+ u_char i, buf[2049];
+ size_t lens[] = {
+ 1, 2, 7, 8, 9, 15, 16, 17, 31, 32, 33, 127, 128, 129,
+ 255, 256, 257, 1023, 1024, 1025, 2047, 2048, 2049
+ };
+
+ for (i = 0; i < (sizeof(lens)/sizeof(lens[0])); i++) {
+ test_subtest_info("%s key, banana length %zu",
+ sshkey_type(k), lens[i]);
+ banana(buf, lens[i]);
+ signature_test(k, bad, buf, lens[i]);
+ }
+}
+
+static struct sshkey *
+get_private(const char *n)
+{
+ struct sshbuf *b;
+ struct sshkey *ret;
+
+ b = load_file(n);
+ ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", n, &ret, NULL), 0);
+ sshbuf_free(b);
+ return ret;
+}
+
void
sshkey_tests(void)
{
@@ -332,26 +413,98 @@ sshkey_tests(void)
#endif
sshkey_free(kf);
-/* XXX certify test */
-/* XXX sign test */
-/* XXX verify test */
+ 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), 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_to_blob_buf(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();
+
+ 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();
+
+ 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);
- b = load_file("rsa_2");
- ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", "rsa_1",
- &k3, NULL), 0);
- sshbuf_reset(b);
+ k3 = get_private("ed25519_2");
build_cert(b, k2, "ssh-rsa-cert-v01@openssh.com", 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);
- sshbuf_free(b);
sshkey_free(k1);
sshkey_free(k2);
sshkey_free(k3);
+ sshbuf_free(b);
TEST_DONE();
}