1 /* 	$OpenBSD: test_sshkey.c,v 1.21 2020/08/27 03:55:22 djm Exp $ */
2 /*
3  * Regress test for sshkey.h key management API
4  *
5  * Placed in the public domain
6  */
7 
8 #include "includes.h"
9 
10 #include <sys/types.h>
11 #include <sys/param.h>
12 #include <paths.h>
13 #include <stdio.h>
14 #ifdef HAVE_STDINT_H
15 #include <stdint.h>
16 #endif
17 #include <stdlib.h>
18 #include <string.h>
19 
20 #include <openssl/bn.h>
21 #include <openssl/rsa.h>
22 #include <openssl/dsa.h>
23 #if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
24 # include <openssl/ec.h>
25 #endif
26 
27 #include "../test_helper/test_helper.h"
28 
29 #include "ssherr.h"
30 #include "sshbuf.h"
31 #define SSHBUF_INTERNAL 1	/* access internals for testing */
32 #include "sshkey.h"
33 
34 #include "authfile.h"
35 #include "common.h"
36 #include "ssh2.h"
37 
38 void sshkey_tests(void);
39 
40 static void
put_opt(struct sshbuf * b,const char * name,const char * value)41 put_opt(struct sshbuf *b, const char *name, const char *value)
42 {
43 	struct sshbuf *sect;
44 
45 	sect = sshbuf_new();
46 	ASSERT_PTR_NE(sect, NULL);
47 	ASSERT_INT_EQ(sshbuf_put_cstring(b, name), 0);
48 	if (value != NULL)
49 		ASSERT_INT_EQ(sshbuf_put_cstring(sect, value), 0);
50 	ASSERT_INT_EQ(sshbuf_put_stringb(b, sect), 0);
51 	sshbuf_free(sect);
52 }
53 
54 #ifdef WITH_OPENSSL
55 static void
build_cert(struct sshbuf * b,struct sshkey * k,const char * type,struct sshkey * sign_key,struct sshkey * ca_key,const char * sig_alg)56 build_cert(struct sshbuf *b, struct sshkey *k, const char *type,
57     struct sshkey *sign_key, struct sshkey *ca_key,
58     const char *sig_alg)
59 {
60 	struct sshbuf *ca_buf, *pk, *principals, *critopts, *exts;
61 	u_char *sigblob;
62 	size_t siglen;
63 
64 	ca_buf = sshbuf_new();
65 	ASSERT_PTR_NE(ca_buf, NULL);
66 	ASSERT_INT_EQ(sshkey_putb(ca_key, ca_buf), 0);
67 
68 	/*
69 	 * Get the public key serialisation by rendering the key and skipping
70 	 * the type string. This is a bit of a hack :/
71 	 */
72 	pk = sshbuf_new();
73 	ASSERT_PTR_NE(pk, NULL);
74 	ASSERT_INT_EQ(sshkey_putb_plain(k, pk), 0);
75 	ASSERT_INT_EQ(sshbuf_skip_string(pk), 0);
76 
77 	principals = sshbuf_new();
78 	ASSERT_PTR_NE(principals, NULL);
79 	ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gsamsa"), 0);
80 	ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gregor"), 0);
81 
82 	critopts = sshbuf_new();
83 	ASSERT_PTR_NE(critopts, NULL);
84 	put_opt(critopts, "force-command", _PATH_LOCALBASE "/bin/nethack");
85 	put_opt(critopts, "source-address", "192.168.0.0/24,127.0.0.1,::1");
86 
87 	exts = sshbuf_new();
88 	ASSERT_PTR_NE(exts, NULL);
89 	put_opt(critopts, "permit-X11-forwarding", NULL);
90 
91 	ASSERT_INT_EQ(sshbuf_put_cstring(b, type), 0);
92 	ASSERT_INT_EQ(sshbuf_put_cstring(b, "noncenoncenonce!"), 0); /* nonce */
93 	ASSERT_INT_EQ(sshbuf_putb(b, pk), 0); /* public key serialisation */
94 	ASSERT_INT_EQ(sshbuf_put_u64(b, 1234), 0); /* serial */
95 	ASSERT_INT_EQ(sshbuf_put_u32(b, SSH2_CERT_TYPE_USER), 0); /* type */
96 	ASSERT_INT_EQ(sshbuf_put_cstring(b, "gregor"), 0); /* key ID */
97 	ASSERT_INT_EQ(sshbuf_put_stringb(b, principals), 0); /* principals */
98 	ASSERT_INT_EQ(sshbuf_put_u64(b, 0), 0); /* start */
99 	ASSERT_INT_EQ(sshbuf_put_u64(b, 0xffffffffffffffffULL), 0); /* end */
100 	ASSERT_INT_EQ(sshbuf_put_stringb(b, critopts), 0); /* options */
101 	ASSERT_INT_EQ(sshbuf_put_stringb(b, exts), 0); /* extensions */
102 	ASSERT_INT_EQ(sshbuf_put_string(b, NULL, 0), 0); /* reserved */
103 	ASSERT_INT_EQ(sshbuf_put_stringb(b, ca_buf), 0); /* signature key */
104 	ASSERT_INT_EQ(sshkey_sign(sign_key, &sigblob, &siglen,
105 	    sshbuf_ptr(b), sshbuf_len(b), sig_alg, NULL, NULL, 0), 0);
106 	ASSERT_INT_EQ(sshbuf_put_string(b, sigblob, siglen), 0); /* signature */
107 
108 	free(sigblob);
109 	sshbuf_free(ca_buf);
110 	sshbuf_free(exts);
111 	sshbuf_free(critopts);
112 	sshbuf_free(principals);
113 	sshbuf_free(pk);
114 }
115 #endif /* WITH_OPENSSL */
116 
117 static void
signature_test(struct sshkey * k,struct sshkey * bad,const char * sig_alg,const u_char * d,size_t l)118 signature_test(struct sshkey *k, struct sshkey *bad, const char *sig_alg,
119     const u_char *d, size_t l)
120 {
121 	size_t len;
122 	u_char *sig;
123 
124 	ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, sig_alg,
125 	    NULL, NULL, 0), 0);
126 	ASSERT_SIZE_T_GT(len, 8);
127 	ASSERT_PTR_NE(sig, NULL);
128 	ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, NULL, 0, NULL), 0);
129 	ASSERT_INT_NE(sshkey_verify(bad, sig, len, d, l, NULL, 0, NULL), 0);
130 	/* Fuzz test is more comprehensive, this is just a smoke test */
131 	sig[len - 5] ^= 0x10;
132 	ASSERT_INT_NE(sshkey_verify(k, sig, len, d, l, NULL, 0, NULL), 0);
133 	free(sig);
134 }
135 
136 static void
banana(u_char * s,size_t l)137 banana(u_char *s, size_t l)
138 {
139 	size_t o;
140 	const u_char the_banana[] = { 'b', 'a', 'n', 'a', 'n', 'a' };
141 
142 	for (o = 0; o < l; o += sizeof(the_banana)) {
143 		if (l - o < sizeof(the_banana)) {
144 			memcpy(s + o, "nanananana", l - o);
145 			break;
146 		}
147 		memcpy(s + o, banana, sizeof(the_banana));
148 	}
149 }
150 
151 static void
signature_tests(struct sshkey * k,struct sshkey * bad,const char * sig_alg)152 signature_tests(struct sshkey *k, struct sshkey *bad, const char *sig_alg)
153 {
154 	u_char i, buf[2049];
155 	size_t lens[] = {
156 		1, 2, 7, 8, 9, 15, 16, 17, 31, 32, 33, 127, 128, 129,
157 		255, 256, 257, 1023, 1024, 1025, 2047, 2048, 2049
158 	};
159 
160 	for (i = 0; i < (sizeof(lens)/sizeof(lens[0])); i++) {
161 		test_subtest_info("%s key, banana length %zu",
162 		    sshkey_type(k), lens[i]);
163 		banana(buf, lens[i]);
164 		signature_test(k, bad, sig_alg, buf, lens[i]);
165 	}
166 }
167 
168 static struct sshkey *
get_private(const char * n)169 get_private(const char *n)
170 {
171 	struct sshbuf *b;
172 	struct sshkey *ret;
173 
174 	b = load_file(n);
175 	ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", &ret, NULL), 0);
176 	sshbuf_free(b);
177 	return ret;
178 }
179 
180 void
sshkey_tests(void)181 sshkey_tests(void)
182 {
183 	struct sshkey *k1, *k2, *k3, *kf;
184 #ifdef WITH_OPENSSL
185 	struct sshkey *k4, *kr, *kd;
186 #ifdef OPENSSL_HAS_ECC
187 	struct sshkey *ke;
188 #endif /* OPENSSL_HAS_ECC */
189 #endif /* WITH_OPENSSL */
190 	struct sshbuf *b;
191 
192 	TEST_START("new invalid");
193 	k1 = sshkey_new(-42);
194 	ASSERT_PTR_EQ(k1, NULL);
195 	TEST_DONE();
196 
197 	TEST_START("new/free KEY_UNSPEC");
198 	k1 = sshkey_new(KEY_UNSPEC);
199 	ASSERT_PTR_NE(k1, NULL);
200 	sshkey_free(k1);
201 	TEST_DONE();
202 
203 #ifdef WITH_OPENSSL
204 	TEST_START("new/free KEY_RSA");
205 	k1 = sshkey_new(KEY_RSA);
206 	ASSERT_PTR_NE(k1, NULL);
207 	ASSERT_PTR_NE(k1->rsa, NULL);
208 	sshkey_free(k1);
209 	TEST_DONE();
210 
211 	TEST_START("new/free KEY_DSA");
212 	k1 = sshkey_new(KEY_DSA);
213 	ASSERT_PTR_NE(k1, NULL);
214 	ASSERT_PTR_NE(k1->dsa, NULL);
215 	sshkey_free(k1);
216 	TEST_DONE();
217 
218 #ifdef OPENSSL_HAS_ECC
219 	TEST_START("new/free KEY_ECDSA");
220 	k1 = sshkey_new(KEY_ECDSA);
221 	ASSERT_PTR_NE(k1, NULL);
222 	ASSERT_PTR_EQ(k1->ecdsa, NULL);  /* Can't allocate without NID */
223 	sshkey_free(k1);
224 	TEST_DONE();
225 #endif
226 
227 	TEST_START("new/free KEY_ED25519");
228 	k1 = sshkey_new(KEY_ED25519);
229 	ASSERT_PTR_NE(k1, NULL);
230 	/* These should be blank until key loaded or generated */
231 	ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
232 	ASSERT_PTR_EQ(k1->ed25519_pk, NULL);
233 	sshkey_free(k1);
234 	TEST_DONE();
235 
236 	TEST_START("generate KEY_RSA too small modulus");
237 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 128, &k1),
238 	    SSH_ERR_KEY_LENGTH);
239 	ASSERT_PTR_EQ(k1, NULL);
240 	TEST_DONE();
241 
242 	TEST_START("generate KEY_RSA too large modulus");
243 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1 << 20, &k1),
244 	    SSH_ERR_KEY_LENGTH);
245 	ASSERT_PTR_EQ(k1, NULL);
246 	TEST_DONE();
247 
248 	TEST_START("generate KEY_DSA wrong bits");
249 	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 2048, &k1),
250 	    SSH_ERR_KEY_LENGTH);
251 	ASSERT_PTR_EQ(k1, NULL);
252 	sshkey_free(k1);
253 	TEST_DONE();
254 
255 #ifdef OPENSSL_HAS_ECC
256 	TEST_START("generate KEY_ECDSA wrong bits");
257 	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 42, &k1),
258 	    SSH_ERR_KEY_LENGTH);
259 	ASSERT_PTR_EQ(k1, NULL);
260 	sshkey_free(k1);
261 	TEST_DONE();
262 #endif
263 
264 	TEST_START("generate KEY_RSA");
265 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 767, &kr),
266 	    SSH_ERR_KEY_LENGTH);
267 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &kr), 0);
268 	ASSERT_PTR_NE(kr, NULL);
269 	ASSERT_PTR_NE(kr->rsa, NULL);
270 	ASSERT_PTR_NE(rsa_n(kr), NULL);
271 	ASSERT_PTR_NE(rsa_e(kr), NULL);
272 	ASSERT_PTR_NE(rsa_p(kr), NULL);
273 	ASSERT_INT_EQ(BN_num_bits(rsa_n(kr)), 1024);
274 	TEST_DONE();
275 
276 	TEST_START("generate KEY_DSA");
277 	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &kd), 0);
278 	ASSERT_PTR_NE(kd, NULL);
279 	ASSERT_PTR_NE(kd->dsa, NULL);
280 	ASSERT_PTR_NE(dsa_g(kd), NULL);
281 	ASSERT_PTR_NE(dsa_priv_key(kd), NULL);
282 	TEST_DONE();
283 
284 #ifdef OPENSSL_HAS_ECC
285 	TEST_START("generate KEY_ECDSA");
286 	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &ke), 0);
287 	ASSERT_PTR_NE(ke, NULL);
288 	ASSERT_PTR_NE(ke->ecdsa, NULL);
289 	ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL);
290 	ASSERT_PTR_NE(EC_KEY_get0_private_key(ke->ecdsa), NULL);
291 	TEST_DONE();
292 #endif /* OPENSSL_HAS_ECC */
293 #endif /* WITH_OPENSSL */
294 
295 	TEST_START("generate KEY_ED25519");
296 	ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &kf), 0);
297 	ASSERT_PTR_NE(kf, NULL);
298 	ASSERT_INT_EQ(kf->type, KEY_ED25519);
299 	ASSERT_PTR_NE(kf->ed25519_pk, NULL);
300 	ASSERT_PTR_NE(kf->ed25519_sk, NULL);
301 	TEST_DONE();
302 
303 #ifdef WITH_OPENSSL
304 	TEST_START("demote KEY_RSA");
305 	ASSERT_INT_EQ(sshkey_from_private(kr, &k1), 0);
306 	ASSERT_PTR_NE(k1, NULL);
307 	ASSERT_PTR_NE(kr, k1);
308 	ASSERT_INT_EQ(k1->type, KEY_RSA);
309 	ASSERT_PTR_NE(k1->rsa, NULL);
310 	ASSERT_PTR_NE(rsa_n(k1), NULL);
311 	ASSERT_PTR_NE(rsa_e(k1), NULL);
312 	ASSERT_PTR_EQ(rsa_p(k1), NULL);
313 	TEST_DONE();
314 
315 	TEST_START("equal KEY_RSA/demoted KEY_RSA");
316 	ASSERT_INT_EQ(sshkey_equal(kr, k1), 1);
317 	sshkey_free(k1);
318 	TEST_DONE();
319 
320 	TEST_START("demote KEY_DSA");
321 	ASSERT_INT_EQ(sshkey_from_private(kd, &k1), 0);
322 	ASSERT_PTR_NE(k1, NULL);
323 	ASSERT_PTR_NE(kd, k1);
324 	ASSERT_INT_EQ(k1->type, KEY_DSA);
325 	ASSERT_PTR_NE(k1->dsa, NULL);
326 	ASSERT_PTR_NE(dsa_g(k1), NULL);
327 	ASSERT_PTR_EQ(dsa_priv_key(k1), NULL);
328 	TEST_DONE();
329 
330 	TEST_START("equal KEY_DSA/demoted KEY_DSA");
331 	ASSERT_INT_EQ(sshkey_equal(kd, k1), 1);
332 	sshkey_free(k1);
333 	TEST_DONE();
334 
335 #ifdef OPENSSL_HAS_ECC
336 	TEST_START("demote KEY_ECDSA");
337 	ASSERT_INT_EQ(sshkey_from_private(ke, &k1), 0);
338 	ASSERT_PTR_NE(k1, NULL);
339 	ASSERT_PTR_NE(ke, k1);
340 	ASSERT_INT_EQ(k1->type, KEY_ECDSA);
341 	ASSERT_PTR_NE(k1->ecdsa, NULL);
342 	ASSERT_INT_EQ(k1->ecdsa_nid, ke->ecdsa_nid);
343 	ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL);
344 	ASSERT_PTR_EQ(EC_KEY_get0_private_key(k1->ecdsa), NULL);
345 	TEST_DONE();
346 
347 	TEST_START("equal KEY_ECDSA/demoted KEY_ECDSA");
348 	ASSERT_INT_EQ(sshkey_equal(ke, k1), 1);
349 	sshkey_free(k1);
350 	TEST_DONE();
351 #endif /* OPENSSL_HAS_ECC */
352 #endif /* WITH_OPENSSL */
353 
354 	TEST_START("demote KEY_ED25519");
355 	ASSERT_INT_EQ(sshkey_from_private(kf, &k1), 0);
356 	ASSERT_PTR_NE(k1, NULL);
357 	ASSERT_PTR_NE(kf, k1);
358 	ASSERT_INT_EQ(k1->type, KEY_ED25519);
359 	ASSERT_PTR_NE(k1->ed25519_pk, NULL);
360 	ASSERT_PTR_EQ(k1->ed25519_sk, NULL);
361 	TEST_DONE();
362 
363 	TEST_START("equal KEY_ED25519/demoted KEY_ED25519");
364 	ASSERT_INT_EQ(sshkey_equal(kf, k1), 1);
365 	sshkey_free(k1);
366 	TEST_DONE();
367 
368 #ifdef WITH_OPENSSL
369 	TEST_START("equal mismatched key types");
370 	ASSERT_INT_EQ(sshkey_equal(kd, kr), 0);
371 #ifdef OPENSSL_HAS_ECC
372 	ASSERT_INT_EQ(sshkey_equal(kd, ke), 0);
373 	ASSERT_INT_EQ(sshkey_equal(kr, ke), 0);
374 	ASSERT_INT_EQ(sshkey_equal(ke, kf), 0);
375 #endif /* OPENSSL_HAS_ECC */
376 	ASSERT_INT_EQ(sshkey_equal(kd, kf), 0);
377 	TEST_DONE();
378 #endif /* WITH_OPENSSL */
379 
380 	TEST_START("equal different keys");
381 #ifdef WITH_OPENSSL
382 	ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &k1), 0);
383 	ASSERT_INT_EQ(sshkey_equal(kr, k1), 0);
384 	sshkey_free(k1);
385 	ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &k1), 0);
386 	ASSERT_INT_EQ(sshkey_equal(kd, k1), 0);
387 	sshkey_free(k1);
388 #ifdef OPENSSL_HAS_ECC
389 	ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k1), 0);
390 	ASSERT_INT_EQ(sshkey_equal(ke, k1), 0);
391 	sshkey_free(k1);
392 #endif /* OPENSSL_HAS_ECC */
393 #endif /* WITH_OPENSSL */
394 	ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k1), 0);
395 	ASSERT_INT_EQ(sshkey_equal(kf, k1), 0);
396 	sshkey_free(k1);
397 	TEST_DONE();
398 
399 #ifdef WITH_OPENSSL
400 	sshkey_free(kr);
401 	sshkey_free(kd);
402 #ifdef OPENSSL_HAS_ECC
403 	sshkey_free(ke);
404 #endif /* OPENSSL_HAS_ECC */
405 #endif /* WITH_OPENSSL */
406 	sshkey_free(kf);
407 
408 	TEST_START("certify key");
409 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_1.pub"),
410 	    &k1, NULL), 0);
411 	k2 = get_private("ed25519_2");
412 	ASSERT_INT_EQ(sshkey_to_certified(k1), 0);
413 	ASSERT_PTR_NE(k1->cert, NULL);
414 	k1->cert->type = SSH2_CERT_TYPE_USER;
415 	k1->cert->serial = 1234;
416 	k1->cert->key_id = strdup("estragon");
417 	ASSERT_PTR_NE(k1->cert->key_id, NULL);
418 	k1->cert->principals = calloc(4, sizeof(*k1->cert->principals));
419 	ASSERT_PTR_NE(k1->cert->principals, NULL);
420 	k1->cert->principals[0] = strdup("estragon");
421 	k1->cert->principals[1] = strdup("vladimir");
422 	k1->cert->principals[2] = strdup("pozzo");
423 	k1->cert->principals[3] = strdup("lucky");
424 	ASSERT_PTR_NE(k1->cert->principals[0], NULL);
425 	ASSERT_PTR_NE(k1->cert->principals[1], NULL);
426 	ASSERT_PTR_NE(k1->cert->principals[2], NULL);
427 	ASSERT_PTR_NE(k1->cert->principals[3], NULL);
428 	k1->cert->nprincipals = 4;
429 	k1->cert->valid_after = 0;
430 	k1->cert->valid_before = (u_int64_t)-1;
431 	sshbuf_free(k1->cert->critical);
432 	k1->cert->critical = sshbuf_new();
433 	ASSERT_PTR_NE(k1->cert->critical, NULL);
434 	sshbuf_free(k1->cert->extensions);
435 	k1->cert->extensions = sshbuf_new();
436 	ASSERT_PTR_NE(k1->cert->extensions, NULL);
437 	put_opt(k1->cert->critical, "force-command", "/usr/bin/true");
438 	put_opt(k1->cert->critical, "source-address", "127.0.0.1");
439 	put_opt(k1->cert->extensions, "permit-X11-forwarding", NULL);
440 	put_opt(k1->cert->extensions, "permit-agent-forwarding", NULL);
441 	ASSERT_INT_EQ(sshkey_from_private(k2, &k1->cert->signature_key), 0);
442 	ASSERT_INT_EQ(sshkey_certify(k1, k2, NULL, NULL, NULL), 0);
443 	b = sshbuf_new();
444 	ASSERT_PTR_NE(b, NULL);
445 	ASSERT_INT_EQ(sshkey_putb(k1, b), 0);
446 	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k3), 0);
447 
448 	sshkey_free(k1);
449 	sshkey_free(k2);
450 	sshkey_free(k3);
451 	sshbuf_reset(b);
452 	TEST_DONE();
453 
454 #ifdef WITH_OPENSSL
455 	TEST_START("sign and verify RSA");
456 	k1 = get_private("rsa_1");
457 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
458 	    NULL), 0);
459 	signature_tests(k1, k2, "ssh-rsa");
460 	sshkey_free(k1);
461 	sshkey_free(k2);
462 	TEST_DONE();
463 
464 	TEST_START("sign and verify RSA-SHA256");
465 	k1 = get_private("rsa_1");
466 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
467 	    NULL), 0);
468 	signature_tests(k1, k2, "rsa-sha2-256");
469 	sshkey_free(k1);
470 	sshkey_free(k2);
471 	TEST_DONE();
472 
473 	TEST_START("sign and verify RSA-SHA512");
474 	k1 = get_private("rsa_1");
475 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2,
476 	    NULL), 0);
477 	signature_tests(k1, k2, "rsa-sha2-512");
478 	sshkey_free(k1);
479 	sshkey_free(k2);
480 	TEST_DONE();
481 
482 	TEST_START("sign and verify DSA");
483 	k1 = get_private("dsa_1");
484 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("dsa_2.pub"), &k2,
485 	    NULL), 0);
486 	signature_tests(k1, k2, NULL);
487 	sshkey_free(k1);
488 	sshkey_free(k2);
489 	TEST_DONE();
490 
491 #ifdef OPENSSL_HAS_ECC
492 	TEST_START("sign and verify ECDSA");
493 	k1 = get_private("ecdsa_1");
494 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ecdsa_2.pub"), &k2,
495 	    NULL), 0);
496 	signature_tests(k1, k2, NULL);
497 	sshkey_free(k1);
498 	sshkey_free(k2);
499 	TEST_DONE();
500 #endif /* OPENSSL_HAS_ECC */
501 #endif /* WITH_OPENSSL */
502 
503 	TEST_START("sign and verify ED25519");
504 	k1 = get_private("ed25519_1");
505 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_2.pub"), &k2,
506 	    NULL), 0);
507 	signature_tests(k1, k2, NULL);
508 	sshkey_free(k1);
509 	sshkey_free(k2);
510 	TEST_DONE();
511 
512 #ifdef WITH_OPENSSL
513 	TEST_START("nested certificate");
514 	ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0);
515 	ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_1.pub"), &k2,
516 	    NULL), 0);
517 	k3 = get_private("rsa_1");
518 	build_cert(b, k2, "[email protected]", k3, k1, NULL);
519 	ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k4),
520 	    SSH_ERR_KEY_CERT_INVALID_SIGN_KEY);
521 	ASSERT_PTR_EQ(k4, NULL);
522 	sshkey_free(k1);
523 	sshkey_free(k2);
524 	sshkey_free(k3);
525 	sshbuf_free(b);
526 	TEST_DONE();
527 #endif /* WITH_OPENSSL */
528 }
529