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Diffstat (limited to 'regress/unittests/sshbuf/test_sshbuf_getput_crypto.c')
-rw-r--r--regress/unittests/sshbuf/test_sshbuf_getput_crypto.c409
1 files changed, 409 insertions, 0 deletions
diff --git a/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c b/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c
new file mode 100644
index 000000000..0c4c71ecd
--- /dev/null
+++ b/regress/unittests/sshbuf/test_sshbuf_getput_crypto.c
@@ -0,0 +1,409 @@
1/* $OpenBSD: test_sshbuf_getput_crypto.c,v 1.1 2014/04/30 05:32:00 djm Exp $ */
2/*
3 * Regress test for sshbuf.h buffer 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 <stdio.h>
13#ifdef HAVE_STDINT_H
14# include <stdint.h>
15#endif
16#include <stdlib.h>
17#include <string.h>
18
19#include <openssl/bn.h>
20#include <openssl/objects.h>
21#ifdef OPENSSL_HAS_NISTP256
22# include <openssl/ec.h>
23#endif
24
25#include "../test_helper/test_helper.h"
26#include "ssherr.h"
27#include "sshbuf.h"
28
29void sshbuf_getput_crypto_tests(void);
30
31void
32sshbuf_getput_crypto_tests(void)
33{
34 struct sshbuf *p1;
35 const u_char *d;
36 size_t s;
37 BIGNUM *bn, *bn2;
38 /* This one has num_bits != num_bytes * 8 to test bignum1 encoding */
39 const char *hexbn1 = "0102030405060708090a0b0c0d0e0f10";
40 /* This one has MSB set to test bignum2 encoding negative-avoidance */
41 const char *hexbn2 = "f0e0d0c0b0a0908070605040302010007fff11";
42 u_char expbn1[] = {
43 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
44 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
45 };
46 u_char expbn2[] = {
47 0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
48 0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
49 0x7f, 0xff, 0x11
50 };
51#ifdef OPENSSL_HAS_NISTP256
52 BIGNUM *bn_x, *bn_y;
53 int ec256_nid = NID_X9_62_prime256v1;
54 char *ec256_x = "0C828004839D0106AA59575216191357"
55 "34B451459DADB586677EF9DF55784999";
56 char *ec256_y = "4D196B50F0B4E94B3C73E3A9D4CD9DF2"
57 "C8F9A35E42BDD047550F69D80EC23CD4";
58 u_char expec256[] = {
59 0x04,
60 0x0c, 0x82, 0x80, 0x04, 0x83, 0x9d, 0x01, 0x06,
61 0xaa, 0x59, 0x57, 0x52, 0x16, 0x19, 0x13, 0x57,
62 0x34, 0xb4, 0x51, 0x45, 0x9d, 0xad, 0xb5, 0x86,
63 0x67, 0x7e, 0xf9, 0xdf, 0x55, 0x78, 0x49, 0x99,
64 0x4d, 0x19, 0x6b, 0x50, 0xf0, 0xb4, 0xe9, 0x4b,
65 0x3c, 0x73, 0xe3, 0xa9, 0xd4, 0xcd, 0x9d, 0xf2,
66 0xc8, 0xf9, 0xa3, 0x5e, 0x42, 0xbd, 0xd0, 0x47,
67 0x55, 0x0f, 0x69, 0xd8, 0x0e, 0xc2, 0x3c, 0xd4
68 };
69 EC_KEY *eck;
70 EC_POINT *ecp;
71#endif
72 int r;
73
74#define MKBN(b, bnn) \
75 do { \
76 bnn = NULL; \
77 ASSERT_INT_GT(BN_hex2bn(&bnn, b), 0); \
78 } while (0)
79
80 TEST_START("sshbuf_put_bignum1");
81 MKBN(hexbn1, bn);
82 p1 = sshbuf_new();
83 ASSERT_PTR_NE(p1, NULL);
84 ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
85 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 2);
86 ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
87 ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn1, sizeof(expbn1));
88 BN_free(bn);
89 sshbuf_free(p1);
90 TEST_DONE();
91
92 TEST_START("sshbuf_put_bignum1 limited");
93 MKBN(hexbn1, bn);
94 p1 = sshbuf_new();
95 ASSERT_PTR_NE(p1, NULL);
96 ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
97 r = sshbuf_put_bignum1(p1, bn);
98 ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
99 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
100 BN_free(bn);
101 sshbuf_free(p1);
102 TEST_DONE();
103
104 TEST_START("sshbuf_put_bignum1 bn2");
105 MKBN(hexbn2, bn);
106 p1 = sshbuf_new();
107 ASSERT_PTR_NE(p1, NULL);
108 ASSERT_INT_EQ(sshbuf_put_bignum1(p1, bn), 0);
109 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 2);
110 ASSERT_U16_EQ(PEEK_U16(sshbuf_ptr(p1)), (u_int16_t)BN_num_bits(bn));
111 ASSERT_MEM_EQ(sshbuf_ptr(p1) + 2, expbn2, sizeof(expbn2));
112 BN_free(bn);
113 sshbuf_free(p1);
114 TEST_DONE();
115
116 TEST_START("sshbuf_put_bignum1 bn2 limited");
117 MKBN(hexbn2, bn);
118 p1 = sshbuf_new();
119 ASSERT_PTR_NE(p1, NULL);
120 ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 1), 0);
121 r = sshbuf_put_bignum1(p1, bn);
122 ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
123 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
124 BN_free(bn);
125 sshbuf_free(p1);
126 TEST_DONE();
127
128 TEST_START("sshbuf_put_bignum2");
129 MKBN(hexbn1, bn);
130 p1 = sshbuf_new();
131 ASSERT_PTR_NE(p1, NULL);
132 ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
133 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 4);
134 ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn));
135 ASSERT_MEM_EQ(sshbuf_ptr(p1) + 4, expbn1, sizeof(expbn1));
136 BN_free(bn);
137 sshbuf_free(p1);
138 TEST_DONE();
139
140 TEST_START("sshbuf_put_bignum2 limited");
141 MKBN(hexbn1, bn);
142 p1 = sshbuf_new();
143 ASSERT_PTR_NE(p1, NULL);
144 ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn1) + 3), 0);
145 r = sshbuf_put_bignum2(p1, bn);
146 ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
147 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
148 BN_free(bn);
149 sshbuf_free(p1);
150 TEST_DONE();
151
152 TEST_START("sshbuf_put_bignum2 bn2");
153 MKBN(hexbn2, bn);
154 p1 = sshbuf_new();
155 ASSERT_PTR_NE(p1, NULL);
156 ASSERT_INT_EQ(sshbuf_put_bignum2(p1, bn), 0);
157 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4 + 1); /* MSB */
158 ASSERT_U32_EQ(PEEK_U32(sshbuf_ptr(p1)), (u_int32_t)BN_num_bytes(bn) + 1);
159 ASSERT_U8_EQ(*(sshbuf_ptr(p1) + 4), 0x00);
160 ASSERT_MEM_EQ(sshbuf_ptr(p1) + 5, expbn2, sizeof(expbn2));
161 BN_free(bn);
162 sshbuf_free(p1);
163 TEST_DONE();
164
165 TEST_START("sshbuf_put_bignum2 bn2 limited");
166 MKBN(hexbn2, bn);
167 p1 = sshbuf_new();
168 ASSERT_PTR_NE(p1, NULL);
169 ASSERT_INT_EQ(sshbuf_set_max_size(p1, sizeof(expbn2) + 3), 0);
170 r = sshbuf_put_bignum2(p1, bn);
171 ASSERT_INT_EQ(r, SSH_ERR_NO_BUFFER_SPACE);
172 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 0);
173 BN_free(bn);
174 sshbuf_free(p1);
175 TEST_DONE();
176
177 TEST_START("sshbuf_get_bignum1");
178 MKBN(hexbn1, bn);
179 p1 = sshbuf_new();
180 ASSERT_PTR_NE(p1, NULL);
181 ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
182 ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
183 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1));
184 ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
185 bn2 = BN_new();
186 ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
187 ASSERT_BIGNUM_EQ(bn, bn2);
188 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
189 BN_free(bn);
190 BN_free(bn2);
191 sshbuf_free(p1);
192 TEST_DONE();
193
194 TEST_START("sshbuf_get_bignum1 truncated");
195 MKBN(hexbn1, bn);
196 p1 = sshbuf_new();
197 ASSERT_PTR_NE(p1, NULL);
198 ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
199 ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
200 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
201 bn2 = BN_new();
202 r = sshbuf_get_bignum1(p1, bn2);
203 ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
204 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn1) - 1);
205 BN_free(bn);
206 BN_free(bn2);
207 sshbuf_free(p1);
208 TEST_DONE();
209
210 TEST_START("sshbuf_get_bignum1 giant");
211 MKBN(hexbn1, bn);
212 p1 = sshbuf_new();
213 ASSERT_PTR_NE(p1, NULL);
214 ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xffff), 0);
215 ASSERT_INT_EQ(sshbuf_reserve(p1, (0xffff + 7) / 8, NULL), 0);
216 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
217 bn2 = BN_new();
218 r = sshbuf_get_bignum1(p1, bn2);
219 ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
220 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + ((0xffff + 7) / 8));
221 BN_free(bn);
222 BN_free(bn2);
223 sshbuf_free(p1);
224 TEST_DONE();
225
226 TEST_START("sshbuf_get_bignum1 bn2");
227 MKBN(hexbn2, bn);
228 p1 = sshbuf_new();
229 ASSERT_PTR_NE(p1, NULL);
230 ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
231 ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
232 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2));
233 ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
234 bn2 = BN_new();
235 ASSERT_INT_EQ(sshbuf_get_bignum1(p1, bn2), 0);
236 ASSERT_BIGNUM_EQ(bn, bn2);
237 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
238 BN_free(bn);
239 BN_free(bn2);
240 sshbuf_free(p1);
241 TEST_DONE();
242
243 TEST_START("sshbuf_get_bignum1 bn2 truncated");
244 MKBN(hexbn2, bn);
245 p1 = sshbuf_new();
246 ASSERT_PTR_NE(p1, NULL);
247 ASSERT_INT_EQ(sshbuf_put_u16(p1, BN_num_bits(bn)), 0);
248 ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
249 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
250 bn2 = BN_new();
251 r = sshbuf_get_bignum1(p1, bn2);
252 ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
253 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2 + sizeof(expbn2) - 1);
254 BN_free(bn);
255 BN_free(bn2);
256 sshbuf_free(p1);
257 TEST_DONE();
258
259 TEST_START("sshbuf_get_bignum2");
260 MKBN(hexbn1, bn);
261 p1 = sshbuf_new();
262 ASSERT_PTR_NE(p1, NULL);
263 ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
264 ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1)), 0);
265 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + sizeof(expbn1));
266 ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
267 bn2 = BN_new();
268 ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
269 ASSERT_BIGNUM_EQ(bn, bn2);
270 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
271 BN_free(bn);
272 BN_free(bn2);
273 sshbuf_free(p1);
274 TEST_DONE();
275
276 TEST_START("sshbuf_get_bignum2 truncated");
277 MKBN(hexbn1, bn);
278 p1 = sshbuf_new();
279 ASSERT_PTR_NE(p1, NULL);
280 ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
281 ASSERT_INT_EQ(sshbuf_put(p1, expbn1, sizeof(expbn1) - 1), 0);
282 bn2 = BN_new();
283 r = sshbuf_get_bignum2(p1, bn2);
284 ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
285 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn1) + 3);
286 BN_free(bn);
287 BN_free(bn2);
288 sshbuf_free(p1);
289 TEST_DONE();
290
291 TEST_START("sshbuf_get_bignum2 giant");
292 MKBN(hexbn1, bn);
293 p1 = sshbuf_new();
294 ASSERT_PTR_NE(p1, NULL);
295 ASSERT_INT_EQ(sshbuf_put_u32(p1, 65536), 0);
296 ASSERT_INT_EQ(sshbuf_reserve(p1, 65536, NULL), 0);
297 bn2 = BN_new();
298 r = sshbuf_get_bignum2(p1, bn2);
299 ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_TOO_LARGE);
300 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 65536 + 4);
301 BN_free(bn);
302 BN_free(bn2);
303 sshbuf_free(p1);
304 TEST_DONE();
305
306 TEST_START("sshbuf_get_bignum2 bn2");
307 MKBN(hexbn2, bn);
308 p1 = sshbuf_new();
309 ASSERT_PTR_NE(p1, NULL);
310 ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0); /* MSB */
311 ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
312 ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
313 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 4 + 1 + sizeof(expbn2));
314 ASSERT_INT_EQ(sshbuf_put_u16(p1, 0xd00f), 0);
315 bn2 = BN_new();
316 ASSERT_INT_EQ(sshbuf_get_bignum2(p1, bn2), 0);
317 ASSERT_BIGNUM_EQ(bn, bn2);
318 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 2);
319 BN_free(bn);
320 BN_free(bn2);
321 sshbuf_free(p1);
322 TEST_DONE();
323
324 TEST_START("sshbuf_get_bignum2 bn2 truncated");
325 MKBN(hexbn2, bn);
326 p1 = sshbuf_new();
327 ASSERT_PTR_NE(p1, NULL);
328 ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn) + 1), 0);
329 ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
330 ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2) - 1), 0);
331 bn2 = BN_new();
332 r = sshbuf_get_bignum2(p1, bn2);
333 ASSERT_INT_EQ(r, SSH_ERR_MESSAGE_INCOMPLETE);
334 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 1 + 4 - 1);
335 BN_free(bn);
336 BN_free(bn2);
337 sshbuf_free(p1);
338 TEST_DONE();
339
340 TEST_START("sshbuf_get_bignum2 bn2 negative");
341 MKBN(hexbn2, bn);
342 p1 = sshbuf_new();
343 ASSERT_PTR_NE(p1, NULL);
344 ASSERT_INT_EQ(sshbuf_put_u32(p1, BN_num_bytes(bn)), 0);
345 ASSERT_INT_EQ(sshbuf_put(p1, expbn2, sizeof(expbn2)), 0);
346 bn2 = BN_new();
347 r = sshbuf_get_bignum2(p1, bn2);
348 ASSERT_INT_EQ(r, SSH_ERR_BIGNUM_IS_NEGATIVE);
349 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expbn2) + 4);
350 BN_free(bn);
351 BN_free(bn2);
352 sshbuf_free(p1);
353 TEST_DONE();
354
355#ifdef OPENSSL_HAS_NISTP256
356 TEST_START("sshbuf_put_ec");
357 eck = EC_KEY_new_by_curve_name(ec256_nid);
358 ASSERT_PTR_NE(eck, NULL);
359 ecp = EC_POINT_new(EC_KEY_get0_group(eck));
360 ASSERT_PTR_NE(ecp, NULL);
361 MKBN(ec256_x, bn_x);
362 MKBN(ec256_y, bn_y);
363 ASSERT_INT_EQ(EC_POINT_set_affine_coordinates_GFp(
364 EC_KEY_get0_group(eck), ecp, bn_x, bn_y, NULL), 1);
365 ASSERT_INT_EQ(EC_KEY_set_public_key(eck, ecp), 1);
366 BN_free(bn_x);
367 BN_free(bn_y);
368 EC_POINT_free(ecp);
369 p1 = sshbuf_new();
370 ASSERT_PTR_NE(p1, NULL);
371 ASSERT_INT_EQ(sshbuf_put_eckey(p1, eck), 0);
372 ASSERT_INT_EQ(sshbuf_get_string_direct(p1, &d, &s), 0);
373 ASSERT_SIZE_T_EQ(s, sizeof(expec256));
374 ASSERT_MEM_EQ(d, expec256, sizeof(expec256));
375 sshbuf_free(p1);
376 EC_KEY_free(eck);
377 TEST_DONE();
378
379 TEST_START("sshbuf_get_ec");
380 eck = EC_KEY_new_by_curve_name(ec256_nid);
381 ASSERT_PTR_NE(eck, NULL);
382 p1 = sshbuf_new();
383 ASSERT_PTR_NE(p1, NULL);
384 ASSERT_INT_EQ(sshbuf_put_string(p1, expec256, sizeof(expec256)), 0);
385 ASSERT_SIZE_T_EQ(sshbuf_len(p1), sizeof(expec256) + 4);
386 ASSERT_INT_EQ(sshbuf_put_u8(p1, 0x00), 0);
387 ASSERT_INT_EQ(sshbuf_get_eckey(p1, eck), 0);
388 bn_x = BN_new();
389 bn_y = BN_new();
390 ASSERT_PTR_NE(bn_x, NULL);
391 ASSERT_PTR_NE(bn_y, NULL);
392 ASSERT_INT_EQ(EC_POINT_get_affine_coordinates_GFp(
393 EC_KEY_get0_group(eck), EC_KEY_get0_public_key(eck),
394 bn_x, bn_y, NULL), 1);
395 MKBN(ec256_x, bn);
396 MKBN(ec256_y, bn2);
397 ASSERT_INT_EQ(BN_cmp(bn_x, bn), 0);
398 ASSERT_INT_EQ(BN_cmp(bn_y, bn2), 0);
399 ASSERT_SIZE_T_EQ(sshbuf_len(p1), 1);
400 sshbuf_free(p1);
401 EC_KEY_free(eck);
402 BN_free(bn_x);
403 BN_free(bn_y);
404 BN_free(bn);
405 BN_free(bn2);
406 TEST_DONE();
407#endif
408}
409
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