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[FreeBSD/releng/10.3.git] / crypto / openssh / regress / unittests / sshbuf / test_sshbuf_getput_crypto.c
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
29 void sshbuf_getput_crypto_tests(void);
30
31 void
32 sshbuf_getput_crypto_tests(void)
33 {
34         struct sshbuf *p1;
35         BIGNUM *bn, *bn2;
36         /* This one has num_bits != num_bytes * 8 to test bignum1 encoding */
37         const char *hexbn1 = "0102030405060708090a0b0c0d0e0f10";
38         /* This one has MSB set to test bignum2 encoding negative-avoidance */
39         const char *hexbn2 = "f0e0d0c0b0a0908070605040302010007fff11";
40         u_char expbn1[] = {
41                 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
42                 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f, 0x10,
43         };
44         u_char expbn2[] = {
45                 0xf0, 0xe0, 0xd0, 0xc0, 0xb0, 0xa0, 0x90, 0x80,
46                 0x70, 0x60, 0x50, 0x40, 0x30, 0x20, 0x10, 0x00,
47                 0x7f, 0xff, 0x11
48         };
49 #if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256)
50         const u_char *d;
51         size_t s;
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 #if defined(OPENSSL_HAS_ECC) && defined(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