Line data Source code
1 : /* SPDX-License-Identifier: LGPL-2.1+ */
2 :
3 : #include <arpa/inet.h>
4 : #if HAVE_GCRYPT
5 : #include <gcrypt.h>
6 : #endif
7 : #include <netinet/in.h>
8 : #include <sys/socket.h>
9 :
10 : #include "alloc-util.h"
11 : #include "resolved-dns-dnssec.h"
12 : #include "resolved-dns-rr.h"
13 : #include "string-util.h"
14 : #include "hexdecoct.h"
15 :
16 7 : static void test_dnssec_canonicalize_one(const char *original, const char *canonical, int r) {
17 : char canonicalized[DNSSEC_CANONICAL_HOSTNAME_MAX];
18 :
19 7 : assert_se(dnssec_canonicalize(original, canonicalized, sizeof(canonicalized)) == r);
20 7 : if (r < 0)
21 1 : return;
22 :
23 6 : assert_se(streq(canonicalized, canonical));
24 : }
25 :
26 1 : static void test_dnssec_canonicalize(void) {
27 1 : test_dnssec_canonicalize_one("", ".", 1);
28 1 : test_dnssec_canonicalize_one(".", ".", 1);
29 1 : test_dnssec_canonicalize_one("foo", "foo.", 4);
30 1 : test_dnssec_canonicalize_one("foo.", "foo.", 4);
31 1 : test_dnssec_canonicalize_one("FOO.", "foo.", 4);
32 1 : test_dnssec_canonicalize_one("FOO.bar.", "foo.bar.", 8);
33 1 : test_dnssec_canonicalize_one("FOO..bar.", NULL, -EINVAL);
34 1 : }
35 :
36 : #if HAVE_GCRYPT
37 :
38 1 : static void test_dnssec_verify_dns_key(void) {
39 :
40 : static const uint8_t ds1_fprint[] = {
41 : 0x46, 0x8B, 0xC8, 0xDD, 0xC7, 0xE8, 0x27, 0x03, 0x40, 0xBB, 0x8A, 0x1F, 0x3B, 0x2E, 0x45, 0x9D,
42 : 0x80, 0x67, 0x14, 0x01,
43 : };
44 : static const uint8_t ds2_fprint[] = {
45 : 0x8A, 0xEE, 0x80, 0x47, 0x05, 0x5F, 0x83, 0xD1, 0x48, 0xBA, 0x8F, 0xF6, 0xDD, 0xA7, 0x60, 0xCE,
46 : 0x94, 0xF7, 0xC7, 0x5E, 0x52, 0x4C, 0xF2, 0xE9, 0x50, 0xB9, 0x2E, 0xCB, 0xEF, 0x96, 0xB9, 0x98,
47 : };
48 : static const uint8_t dnskey_blob[] = {
49 : 0x03, 0x01, 0x00, 0x01, 0xa8, 0x12, 0xda, 0x4f, 0xd2, 0x7d, 0x54, 0x14, 0x0e, 0xcc, 0x5b, 0x5e,
50 : 0x45, 0x9c, 0x96, 0x98, 0xc0, 0xc0, 0x85, 0x81, 0xb1, 0x47, 0x8c, 0x7d, 0xe8, 0x39, 0x50, 0xcc,
51 : 0xc5, 0xd0, 0xf2, 0x00, 0x81, 0x67, 0x79, 0xf6, 0xcc, 0x9d, 0xad, 0x6c, 0xbb, 0x7b, 0x6f, 0x48,
52 : 0x97, 0x15, 0x1c, 0xfd, 0x0b, 0xfe, 0xd3, 0xd7, 0x7d, 0x9f, 0x81, 0x26, 0xd3, 0xc5, 0x65, 0x49,
53 : 0xcf, 0x46, 0x62, 0xb0, 0x55, 0x6e, 0x47, 0xc7, 0x30, 0xef, 0x51, 0xfb, 0x3e, 0xc6, 0xef, 0xde,
54 : 0x27, 0x3f, 0xfa, 0x57, 0x2d, 0xa7, 0x1d, 0x80, 0x46, 0x9a, 0x5f, 0x14, 0xb3, 0xb0, 0x2c, 0xbe,
55 : 0x72, 0xca, 0xdf, 0xb2, 0xff, 0x36, 0x5b, 0x4f, 0xec, 0x58, 0x8e, 0x8d, 0x01, 0xe9, 0xa9, 0xdf,
56 : 0xb5, 0x60, 0xad, 0x52, 0x4d, 0xfc, 0xa9, 0x3e, 0x8d, 0x35, 0x95, 0xb3, 0x4e, 0x0f, 0xca, 0x45,
57 : 0x1b, 0xf7, 0xef, 0x3a, 0x88, 0x25, 0x08, 0xc7, 0x4e, 0x06, 0xc1, 0x62, 0x1a, 0xce, 0xd8, 0x77,
58 : 0xbd, 0x02, 0x65, 0xf8, 0x49, 0xfb, 0xce, 0xf6, 0xa8, 0x09, 0xfc, 0xde, 0xb2, 0x09, 0x9d, 0x39,
59 : 0xf8, 0x63, 0x9c, 0x32, 0x42, 0x7c, 0xa0, 0x30, 0x86, 0x72, 0x7a, 0x4a, 0xc6, 0xd4, 0xb3, 0x2d,
60 : 0x24, 0xef, 0x96, 0x3f, 0xc2, 0xda, 0xd3, 0xf2, 0x15, 0x6f, 0xda, 0x65, 0x4b, 0x81, 0x28, 0x68,
61 : 0xf4, 0xfe, 0x3e, 0x71, 0x4f, 0x50, 0x96, 0x72, 0x58, 0xa1, 0x89, 0xdd, 0x01, 0x61, 0x39, 0x39,
62 : 0xc6, 0x76, 0xa4, 0xda, 0x02, 0x70, 0x3d, 0xc0, 0xdc, 0x8d, 0x70, 0x72, 0x04, 0x90, 0x79, 0xd4,
63 : 0xec, 0x65, 0xcf, 0x49, 0x35, 0x25, 0x3a, 0x14, 0x1a, 0x45, 0x20, 0xeb, 0x31, 0xaf, 0x92, 0xba,
64 : 0x20, 0xd3, 0xcd, 0xa7, 0x13, 0x44, 0xdc, 0xcf, 0xf0, 0x27, 0x34, 0xb9, 0xe7, 0x24, 0x6f, 0x73,
65 : 0xe7, 0xea, 0x77, 0x03,
66 : };
67 :
68 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *dnskey = NULL, *ds1 = NULL, *ds2 = NULL;
69 :
70 : /* The two DS RRs in effect for nasa.gov on 2015-12-01. */
71 1 : ds1 = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "nasa.gov");
72 1 : assert_se(ds1);
73 :
74 1 : ds1->ds.key_tag = 47857;
75 1 : ds1->ds.algorithm = DNSSEC_ALGORITHM_RSASHA256;
76 1 : ds1->ds.digest_type = DNSSEC_DIGEST_SHA1;
77 1 : ds1->ds.digest_size = sizeof(ds1_fprint);
78 1 : ds1->ds.digest = memdup(ds1_fprint, ds1->ds.digest_size);
79 1 : assert_se(ds1->ds.digest);
80 :
81 1 : log_info("DS1: %s", strna(dns_resource_record_to_string(ds1)));
82 :
83 1 : ds2 = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "NASA.GOV");
84 1 : assert_se(ds2);
85 :
86 1 : ds2->ds.key_tag = 47857;
87 1 : ds2->ds.algorithm = DNSSEC_ALGORITHM_RSASHA256;
88 1 : ds2->ds.digest_type = DNSSEC_DIGEST_SHA256;
89 1 : ds2->ds.digest_size = sizeof(ds2_fprint);
90 1 : ds2->ds.digest = memdup(ds2_fprint, ds2->ds.digest_size);
91 1 : assert_se(ds2->ds.digest);
92 :
93 1 : log_info("DS2: %s", strna(dns_resource_record_to_string(ds2)));
94 :
95 1 : dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nasa.GOV");
96 1 : assert_se(dnskey);
97 :
98 1 : dnskey->dnskey.flags = 257;
99 1 : dnskey->dnskey.protocol = 3;
100 1 : dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;
101 1 : dnskey->dnskey.key_size = sizeof(dnskey_blob);
102 1 : dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));
103 1 : assert_se(dnskey->dnskey.key);
104 :
105 1 : log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));
106 1 : log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));
107 :
108 1 : assert_se(dnssec_verify_dnskey_by_ds(dnskey, ds1, false) > 0);
109 1 : assert_se(dnssec_verify_dnskey_by_ds(dnskey, ds2, false) > 0);
110 1 : }
111 :
112 1 : static void test_dnssec_verify_rfc8080_ed25519_example1(void) {
113 : static const uint8_t dnskey_blob[] = {
114 : 0x97, 0x4d, 0x96, 0xa2, 0x2d, 0x22, 0x4b, 0xc0, 0x1a, 0xdb, 0x91, 0x50, 0x91, 0x47, 0x7d,
115 : 0x44, 0xcc, 0xd9, 0x1c, 0x9a, 0x41, 0xa1, 0x14, 0x30, 0x01, 0x01, 0x17, 0xd5, 0x2c, 0x59,
116 : 0x24, 0xe
117 : };
118 : static const uint8_t ds_fprint[] = {
119 : 0xdd, 0xa6, 0xb9, 0x69, 0xbd, 0xfb, 0x79, 0xf7, 0x1e, 0xe7, 0xb7, 0xfb, 0xdf, 0xb7, 0xdc,
120 : 0xd7, 0xad, 0xbb, 0xd3, 0x5d, 0xdf, 0x79, 0xed, 0x3b, 0x6d, 0xd7, 0xf6, 0xe3, 0x56, 0xdd,
121 : 0xd7, 0x47, 0xf7, 0x6f, 0x5f, 0x7a, 0xe1, 0xa6, 0xf9, 0xe5, 0xce, 0xfc, 0x7b, 0xbf, 0x5a,
122 : 0xdf, 0x4e, 0x1b
123 : };
124 : static const uint8_t signature_blob[] = {
125 : 0xa0, 0xbf, 0x64, 0xac, 0x9b, 0xa7, 0xef, 0x17, 0xc1, 0x38, 0x85, 0x9c, 0x18, 0x78, 0xbb,
126 : 0x99, 0xa8, 0x39, 0xfe, 0x17, 0x59, 0xac, 0xa5, 0xb0, 0xd7, 0x98, 0xcf, 0x1a, 0xb1, 0xe9,
127 : 0x8d, 0x07, 0x91, 0x02, 0xf4, 0xdd, 0xb3, 0x36, 0x8f, 0x0f, 0xe4, 0x0b, 0xb3, 0x77, 0xf1,
128 : 0xf0, 0x0e, 0x0c, 0xdd, 0xed, 0xb7, 0x99, 0x16, 0x7d, 0x56, 0xb6, 0xe9, 0x32, 0x78, 0x30,
129 : 0x72, 0xba, 0x8d, 0x02
130 : };
131 :
132 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *dnskey = NULL, *ds = NULL, *mx = NULL,
133 1 : *rrsig = NULL;
134 1 : _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
135 : DnssecResult result;
136 :
137 1 : dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "example.com.");
138 1 : assert_se(dnskey);
139 :
140 1 : dnskey->dnskey.flags = 257;
141 1 : dnskey->dnskey.protocol = 3;
142 1 : dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_ED25519;
143 1 : dnskey->dnskey.key_size = sizeof(dnskey_blob);
144 1 : dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));
145 1 : assert_se(dnskey->dnskey.key);
146 :
147 1 : log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));
148 :
149 1 : ds = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "example.com.");
150 1 : assert_se(ds);
151 :
152 1 : ds->ds.key_tag = 3613;
153 1 : ds->ds.algorithm = DNSSEC_ALGORITHM_ED25519;
154 1 : ds->ds.digest_type = DNSSEC_DIGEST_SHA256;
155 1 : ds->ds.digest_size = sizeof(ds_fprint);
156 1 : ds->ds.digest = memdup(ds_fprint, ds->ds.digest_size);
157 1 : assert_se(ds->ds.digest);
158 :
159 1 : log_info("DS: %s", strna(dns_resource_record_to_string(ds)));
160 :
161 1 : mx = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_MX, "example.com.");
162 1 : assert_se(mx);
163 :
164 1 : mx->mx.priority = 10;
165 1 : mx->mx.exchange = strdup("mail.example.com.");
166 1 : assert_se(mx->mx.exchange);
167 :
168 1 : log_info("MX: %s", strna(dns_resource_record_to_string(mx)));
169 :
170 1 : rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "example.com.");
171 1 : assert_se(rrsig);
172 :
173 1 : rrsig->rrsig.type_covered = DNS_TYPE_MX;
174 1 : rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_ED25519;
175 1 : rrsig->rrsig.labels = 2;
176 1 : rrsig->rrsig.original_ttl = 3600;
177 1 : rrsig->rrsig.expiration = 1440021600;
178 1 : rrsig->rrsig.inception = 1438207200;
179 1 : rrsig->rrsig.key_tag = 3613;
180 1 : rrsig->rrsig.signer = strdup("example.com.");
181 1 : assert_se(rrsig->rrsig.signer);
182 1 : rrsig->rrsig.signature_size = sizeof(signature_blob);
183 1 : rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);
184 1 : assert_se(rrsig->rrsig.signature);
185 :
186 1 : log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));
187 :
188 1 : assert_se(dnssec_key_match_rrsig(mx->key, rrsig) > 0);
189 1 : assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);
190 :
191 1 : answer = dns_answer_new(1);
192 1 : assert_se(answer);
193 1 : assert_se(dns_answer_add(answer, mx, 0, DNS_ANSWER_AUTHENTICATED) >= 0);
194 :
195 1 : assert_se(dnssec_verify_rrset(answer, mx->key, rrsig, dnskey,
196 : rrsig->rrsig.inception * USEC_PER_SEC, &result) >= 0);
197 : #if GCRYPT_VERSION_NUMBER >= 0x010600
198 1 : assert_se(result == DNSSEC_VALIDATED);
199 : #else
200 : assert_se(result == DNSSEC_UNSUPPORTED_ALGORITHM);
201 : #endif
202 1 : }
203 :
204 1 : static void test_dnssec_verify_rfc8080_ed25519_example2(void) {
205 : static const uint8_t dnskey_blob[] = {
206 : 0xcc, 0xf9, 0xd9, 0xfd, 0x0c, 0x04, 0x7b, 0xb4, 0xbc, 0x0b, 0x94, 0x8f, 0xcf, 0x63, 0x9f,
207 : 0x4b, 0x94, 0x51, 0xe3, 0x40, 0x13, 0x93, 0x6f, 0xeb, 0x62, 0x71, 0x3d, 0xc4, 0x72, 0x4,
208 : 0x8a, 0x3b
209 : };
210 : static const uint8_t ds_fprint[] = {
211 : 0xe3, 0x4d, 0x7b, 0xf3, 0x56, 0xfd, 0xdf, 0x87, 0xb7, 0xf7, 0x67, 0x5e, 0xe3, 0xdd, 0x9e,
212 : 0x73, 0xbe, 0xda, 0x7b, 0x67, 0xb5, 0xe5, 0xde, 0xf4, 0x7f, 0xae, 0x7b, 0xe5, 0xad, 0x5c,
213 : 0xd1, 0xb7, 0x39, 0xf5, 0xce, 0x76, 0xef, 0x97, 0x34, 0xe1, 0xe6, 0xde, 0xf3, 0x47, 0x3a,
214 : 0xeb, 0x5e, 0x1c
215 : };
216 : static const uint8_t signature_blob[] = {
217 : 0xcd, 0x74, 0x34, 0x6e, 0x46, 0x20, 0x41, 0x31, 0x05, 0xc9, 0xf2, 0xf2, 0x8b, 0xd4, 0x28,
218 : 0x89, 0x8e, 0x83, 0xf1, 0x97, 0x58, 0xa3, 0x8c, 0x32, 0x52, 0x15, 0x62, 0xa1, 0x86, 0x57,
219 : 0x15, 0xd4, 0xf8, 0xd7, 0x44, 0x0f, 0x44, 0x84, 0xd0, 0x4a, 0xa2, 0x52, 0x9f, 0x34, 0x28,
220 : 0x4a, 0x6e, 0x69, 0xa0, 0x9e, 0xe0, 0x0f, 0xb0, 0x10, 0x47, 0x43, 0xbb, 0x2a, 0xe2, 0x39,
221 : 0x93, 0x6a, 0x5c, 0x06
222 : };
223 :
224 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *dnskey = NULL, *ds = NULL, *mx = NULL,
225 1 : *rrsig = NULL;
226 1 : _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
227 : DnssecResult result;
228 :
229 1 : dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "example.com.");
230 1 : assert_se(dnskey);
231 :
232 1 : dnskey->dnskey.flags = 257;
233 1 : dnskey->dnskey.protocol = 3;
234 1 : dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_ED25519;
235 1 : dnskey->dnskey.key_size = sizeof(dnskey_blob);
236 1 : dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));
237 1 : assert_se(dnskey->dnskey.key);
238 :
239 1 : log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));
240 :
241 1 : ds = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DS, "example.com.");
242 1 : assert_se(ds);
243 :
244 1 : ds->ds.key_tag = 35217;
245 1 : ds->ds.algorithm = DNSSEC_ALGORITHM_ED25519;
246 1 : ds->ds.digest_type = DNSSEC_DIGEST_SHA256;
247 1 : ds->ds.digest_size = sizeof(ds_fprint);
248 1 : ds->ds.digest = memdup(ds_fprint, ds->ds.digest_size);
249 1 : assert_se(ds->ds.digest);
250 :
251 1 : log_info("DS: %s", strna(dns_resource_record_to_string(ds)));
252 :
253 1 : mx = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_MX, "example.com.");
254 1 : assert_se(mx);
255 :
256 1 : mx->mx.priority = 10;
257 1 : mx->mx.exchange = strdup("mail.example.com.");
258 1 : assert_se(mx->mx.exchange);
259 :
260 1 : log_info("MX: %s", strna(dns_resource_record_to_string(mx)));
261 :
262 1 : rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "example.com.");
263 1 : assert_se(rrsig);
264 :
265 1 : rrsig->rrsig.type_covered = DNS_TYPE_MX;
266 1 : rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_ED25519;
267 1 : rrsig->rrsig.labels = 2;
268 1 : rrsig->rrsig.original_ttl = 3600;
269 1 : rrsig->rrsig.expiration = 1440021600;
270 1 : rrsig->rrsig.inception = 1438207200;
271 1 : rrsig->rrsig.key_tag = 35217;
272 1 : rrsig->rrsig.signer = strdup("example.com.");
273 1 : assert_se(rrsig->rrsig.signer);
274 1 : rrsig->rrsig.signature_size = sizeof(signature_blob);
275 1 : rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);
276 1 : assert_se(rrsig->rrsig.signature);
277 :
278 1 : log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));
279 :
280 1 : assert_se(dnssec_key_match_rrsig(mx->key, rrsig) > 0);
281 1 : assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);
282 :
283 1 : answer = dns_answer_new(1);
284 1 : assert_se(answer);
285 1 : assert_se(dns_answer_add(answer, mx, 0, DNS_ANSWER_AUTHENTICATED) >= 0);
286 :
287 1 : assert_se(dnssec_verify_rrset(answer, mx->key, rrsig, dnskey,
288 : rrsig->rrsig.inception * USEC_PER_SEC, &result) >= 0);
289 : #if GCRYPT_VERSION_NUMBER >= 0x010600
290 1 : assert_se(result == DNSSEC_VALIDATED);
291 : #else
292 : assert_se(result == DNSSEC_UNSUPPORTED_ALGORITHM);
293 : #endif
294 1 : }
295 1 : static void test_dnssec_verify_rrset(void) {
296 :
297 : static const uint8_t signature_blob[] = {
298 : 0x7f, 0x79, 0xdd, 0x5e, 0x89, 0x79, 0x18, 0xd0, 0x34, 0x86, 0x8c, 0x72, 0x77, 0x75, 0x48, 0x4d,
299 : 0xc3, 0x7d, 0x38, 0x04, 0xab, 0xcd, 0x9e, 0x4c, 0x82, 0xb0, 0x92, 0xca, 0xe9, 0x66, 0xe9, 0x6e,
300 : 0x47, 0xc7, 0x68, 0x8c, 0x94, 0xf6, 0x69, 0xcb, 0x75, 0x94, 0xe6, 0x30, 0xa6, 0xfb, 0x68, 0x64,
301 : 0x96, 0x1a, 0x84, 0xe1, 0xdc, 0x16, 0x4c, 0x83, 0x6c, 0x44, 0xf2, 0x74, 0x4d, 0x74, 0x79, 0x8f,
302 : 0xf3, 0xf4, 0x63, 0x0d, 0xef, 0x5a, 0xe7, 0xe2, 0xfd, 0xf2, 0x2b, 0x38, 0x7c, 0x28, 0x96, 0x9d,
303 : 0xb6, 0xcd, 0x5c, 0x3b, 0x57, 0xe2, 0x24, 0x78, 0x65, 0xd0, 0x9e, 0x77, 0x83, 0x09, 0x6c, 0xff,
304 : 0x3d, 0x52, 0x3f, 0x6e, 0xd1, 0xed, 0x2e, 0xf9, 0xee, 0x8e, 0xa6, 0xbe, 0x9a, 0xa8, 0x87, 0x76,
305 : 0xd8, 0x77, 0xcc, 0x96, 0xa0, 0x98, 0xa1, 0xd1, 0x68, 0x09, 0x43, 0xcf, 0x56, 0xd9, 0xd1, 0x66,
306 : };
307 :
308 : static const uint8_t dnskey_blob[] = {
309 : 0x03, 0x01, 0x00, 0x01, 0x9b, 0x49, 0x9b, 0xc1, 0xf9, 0x9a, 0xe0, 0x4e, 0xcf, 0xcb, 0x14, 0x45,
310 : 0x2e, 0xc9, 0xf9, 0x74, 0xa7, 0x18, 0xb5, 0xf3, 0xde, 0x39, 0x49, 0xdf, 0x63, 0x33, 0x97, 0x52,
311 : 0xe0, 0x8e, 0xac, 0x50, 0x30, 0x8e, 0x09, 0xd5, 0x24, 0x3d, 0x26, 0xa4, 0x49, 0x37, 0x2b, 0xb0,
312 : 0x6b, 0x1b, 0xdf, 0xde, 0x85, 0x83, 0xcb, 0x22, 0x4e, 0x60, 0x0a, 0x91, 0x1a, 0x1f, 0xc5, 0x40,
313 : 0xb1, 0xc3, 0x15, 0xc1, 0x54, 0x77, 0x86, 0x65, 0x53, 0xec, 0x10, 0x90, 0x0c, 0x91, 0x00, 0x5e,
314 : 0x15, 0xdc, 0x08, 0x02, 0x4c, 0x8c, 0x0d, 0xc0, 0xac, 0x6e, 0xc4, 0x3e, 0x1b, 0x80, 0x19, 0xe4,
315 : 0xf7, 0x5f, 0x77, 0x51, 0x06, 0x87, 0x61, 0xde, 0xa2, 0x18, 0x0f, 0x40, 0x8b, 0x79, 0x72, 0xfa,
316 : 0x8d, 0x1a, 0x44, 0x47, 0x0d, 0x8e, 0x3a, 0x2d, 0xc7, 0x39, 0xbf, 0x56, 0x28, 0x97, 0xd9, 0x20,
317 : 0x4f, 0x00, 0x51, 0x3b,
318 : };
319 :
320 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *a = NULL, *rrsig = NULL, *dnskey = NULL;
321 1 : _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
322 : DnssecResult result;
323 :
324 1 : a = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_A, "nAsA.gov");
325 1 : assert_se(a);
326 :
327 1 : a->a.in_addr.s_addr = inet_addr("52.0.14.116");
328 :
329 1 : log_info("A: %s", strna(dns_resource_record_to_string(a)));
330 :
331 1 : rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "NaSa.GOV.");
332 1 : assert_se(rrsig);
333 :
334 1 : rrsig->rrsig.type_covered = DNS_TYPE_A;
335 1 : rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_RSASHA256;
336 1 : rrsig->rrsig.labels = 2;
337 1 : rrsig->rrsig.original_ttl = 600;
338 1 : rrsig->rrsig.expiration = 0x5683135c;
339 1 : rrsig->rrsig.inception = 0x565b7da8;
340 1 : rrsig->rrsig.key_tag = 63876;
341 1 : rrsig->rrsig.signer = strdup("Nasa.Gov.");
342 1 : assert_se(rrsig->rrsig.signer);
343 1 : rrsig->rrsig.signature_size = sizeof(signature_blob);
344 1 : rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);
345 1 : assert_se(rrsig->rrsig.signature);
346 :
347 1 : log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));
348 :
349 1 : dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nASA.gOV");
350 1 : assert_se(dnskey);
351 :
352 1 : dnskey->dnskey.flags = 256;
353 1 : dnskey->dnskey.protocol = 3;
354 1 : dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;
355 1 : dnskey->dnskey.key_size = sizeof(dnskey_blob);
356 1 : dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));
357 1 : assert_se(dnskey->dnskey.key);
358 :
359 1 : log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));
360 1 : log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));
361 :
362 1 : assert_se(dnssec_key_match_rrsig(a->key, rrsig) > 0);
363 1 : assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);
364 :
365 1 : answer = dns_answer_new(1);
366 1 : assert_se(answer);
367 1 : assert_se(dns_answer_add(answer, a, 0, DNS_ANSWER_AUTHENTICATED) >= 0);
368 :
369 : /* Validate the RR as it if was 2015-12-2 today */
370 1 : assert_se(dnssec_verify_rrset(answer, a->key, rrsig, dnskey, 1449092754*USEC_PER_SEC, &result) >= 0);
371 1 : assert_se(result == DNSSEC_VALIDATED);
372 1 : }
373 :
374 1 : static void test_dnssec_verify_rrset2(void) {
375 :
376 : static const uint8_t signature_blob[] = {
377 : 0x48, 0x45, 0xc8, 0x8b, 0xc0, 0x14, 0x92, 0xf5, 0x15, 0xc6, 0x84, 0x9d, 0x2f, 0xe3, 0x32, 0x11,
378 : 0x7d, 0xf1, 0xe6, 0x87, 0xb9, 0x42, 0xd3, 0x8b, 0x9e, 0xaf, 0x92, 0x31, 0x0a, 0x53, 0xad, 0x8b,
379 : 0xa7, 0x5c, 0x83, 0x39, 0x8c, 0x28, 0xac, 0xce, 0x6e, 0x9c, 0x18, 0xe3, 0x31, 0x16, 0x6e, 0xca,
380 : 0x38, 0x31, 0xaf, 0xd9, 0x94, 0xf1, 0x84, 0xb1, 0xdf, 0x5a, 0xc2, 0x73, 0x22, 0xf6, 0xcb, 0xa2,
381 : 0xe7, 0x8c, 0x77, 0x0c, 0x74, 0x2f, 0xc2, 0x13, 0xb0, 0x93, 0x51, 0xa9, 0x4f, 0xae, 0x0a, 0xda,
382 : 0x45, 0xcc, 0xfd, 0x43, 0x99, 0x36, 0x9a, 0x0d, 0x21, 0xe0, 0xeb, 0x30, 0x65, 0xd4, 0xa0, 0x27,
383 : 0x37, 0x3b, 0xe4, 0xc1, 0xc5, 0xa1, 0x2a, 0xd1, 0x76, 0xc4, 0x7e, 0x64, 0x0e, 0x5a, 0xa6, 0x50,
384 : 0x24, 0xd5, 0x2c, 0xcc, 0x6d, 0xe5, 0x37, 0xea, 0xbd, 0x09, 0x34, 0xed, 0x24, 0x06, 0xa1, 0x22,
385 : };
386 :
387 : static const uint8_t dnskey_blob[] = {
388 : 0x03, 0x01, 0x00, 0x01, 0xc3, 0x7f, 0x1d, 0xd1, 0x1c, 0x97, 0xb1, 0x13, 0x34, 0x3a, 0x9a, 0xea,
389 : 0xee, 0xd9, 0x5a, 0x11, 0x1b, 0x17, 0xc7, 0xe3, 0xd4, 0xda, 0x20, 0xbc, 0x5d, 0xba, 0x74, 0xe3,
390 : 0x37, 0x99, 0xec, 0x25, 0xce, 0x93, 0x7f, 0xbd, 0x22, 0x73, 0x7e, 0x14, 0x71, 0xe0, 0x60, 0x07,
391 : 0xd4, 0x39, 0x8b, 0x5e, 0xe9, 0xba, 0x25, 0xe8, 0x49, 0xe9, 0x34, 0xef, 0xfe, 0x04, 0x5c, 0xa5,
392 : 0x27, 0xcd, 0xa9, 0xda, 0x70, 0x05, 0x21, 0xab, 0x15, 0x82, 0x24, 0xc3, 0x94, 0xf5, 0xd7, 0xb7,
393 : 0xc4, 0x66, 0xcb, 0x32, 0x6e, 0x60, 0x2b, 0x55, 0x59, 0x28, 0x89, 0x8a, 0x72, 0xde, 0x88, 0x56,
394 : 0x27, 0x95, 0xd9, 0xac, 0x88, 0x4f, 0x65, 0x2b, 0x68, 0xfc, 0xe6, 0x41, 0xc1, 0x1b, 0xef, 0x4e,
395 : 0xd6, 0xc2, 0x0f, 0x64, 0x88, 0x95, 0x5e, 0xdd, 0x3a, 0x02, 0x07, 0x50, 0xa9, 0xda, 0xa4, 0x49,
396 : 0x74, 0x62, 0xfe, 0xd7,
397 : };
398 :
399 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *nsec = NULL, *rrsig = NULL, *dnskey = NULL;
400 1 : _cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
401 : DnssecResult result;
402 :
403 1 : nsec = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_NSEC, "nasa.gov");
404 1 : assert_se(nsec);
405 :
406 1 : nsec->nsec.next_domain_name = strdup("3D-Printing.nasa.gov");
407 1 : assert_se(nsec->nsec.next_domain_name);
408 :
409 1 : nsec->nsec.types = bitmap_new();
410 1 : assert_se(nsec->nsec.types);
411 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_A) >= 0);
412 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_NS) >= 0);
413 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_SOA) >= 0);
414 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_MX) >= 0);
415 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_TXT) >= 0);
416 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_RRSIG) >= 0);
417 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_NSEC) >= 0);
418 1 : assert_se(bitmap_set(nsec->nsec.types, DNS_TYPE_DNSKEY) >= 0);
419 1 : assert_se(bitmap_set(nsec->nsec.types, 65534) >= 0);
420 :
421 1 : log_info("NSEC: %s", strna(dns_resource_record_to_string(nsec)));
422 :
423 1 : rrsig = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_RRSIG, "NaSa.GOV.");
424 1 : assert_se(rrsig);
425 :
426 1 : rrsig->rrsig.type_covered = DNS_TYPE_NSEC;
427 1 : rrsig->rrsig.algorithm = DNSSEC_ALGORITHM_RSASHA256;
428 1 : rrsig->rrsig.labels = 2;
429 1 : rrsig->rrsig.original_ttl = 300;
430 1 : rrsig->rrsig.expiration = 0x5689002f;
431 1 : rrsig->rrsig.inception = 0x56617230;
432 1 : rrsig->rrsig.key_tag = 30390;
433 1 : rrsig->rrsig.signer = strdup("Nasa.Gov.");
434 1 : assert_se(rrsig->rrsig.signer);
435 1 : rrsig->rrsig.signature_size = sizeof(signature_blob);
436 1 : rrsig->rrsig.signature = memdup(signature_blob, rrsig->rrsig.signature_size);
437 1 : assert_se(rrsig->rrsig.signature);
438 :
439 1 : log_info("RRSIG: %s", strna(dns_resource_record_to_string(rrsig)));
440 :
441 1 : dnskey = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_DNSKEY, "nASA.gOV");
442 1 : assert_se(dnskey);
443 :
444 1 : dnskey->dnskey.flags = 256;
445 1 : dnskey->dnskey.protocol = 3;
446 1 : dnskey->dnskey.algorithm = DNSSEC_ALGORITHM_RSASHA256;
447 1 : dnskey->dnskey.key_size = sizeof(dnskey_blob);
448 1 : dnskey->dnskey.key = memdup(dnskey_blob, sizeof(dnskey_blob));
449 1 : assert_se(dnskey->dnskey.key);
450 :
451 1 : log_info("DNSKEY: %s", strna(dns_resource_record_to_string(dnskey)));
452 1 : log_info("DNSKEY keytag: %u", dnssec_keytag(dnskey, false));
453 :
454 1 : assert_se(dnssec_key_match_rrsig(nsec->key, rrsig) > 0);
455 1 : assert_se(dnssec_rrsig_match_dnskey(rrsig, dnskey, false) > 0);
456 :
457 1 : answer = dns_answer_new(1);
458 1 : assert_se(answer);
459 1 : assert_se(dns_answer_add(answer, nsec, 0, DNS_ANSWER_AUTHENTICATED) >= 0);
460 :
461 : /* Validate the RR as it if was 2015-12-11 today */
462 1 : assert_se(dnssec_verify_rrset(answer, nsec->key, rrsig, dnskey, 1449849318*USEC_PER_SEC, &result) >= 0);
463 1 : assert_se(result == DNSSEC_VALIDATED);
464 1 : }
465 :
466 1 : static void test_dnssec_nsec3_hash(void) {
467 : static const uint8_t salt[] = { 0xB0, 0x1D, 0xFA, 0xCE };
468 : static const uint8_t next_hashed_name[] = { 0x84, 0x10, 0x26, 0x53, 0xc9, 0xfa, 0x4d, 0x85, 0x6c, 0x97, 0x82, 0xe2, 0x8f, 0xdf, 0x2d, 0x5e, 0x87, 0x69, 0xc4, 0x52 };
469 1 : _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *rr = NULL;
470 1 : uint8_t h[DNSSEC_HASH_SIZE_MAX];
471 1 : _cleanup_free_ char *b = NULL;
472 : int k;
473 :
474 : /* The NSEC3 RR for eurid.eu on 2015-12-14. */
475 1 : rr = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_NSEC3, "PJ8S08RR45VIQDAQGE7EN3VHKNROTBMM.eurid.eu.");
476 1 : assert_se(rr);
477 :
478 1 : rr->nsec3.algorithm = DNSSEC_DIGEST_SHA1;
479 1 : rr->nsec3.flags = 1;
480 1 : rr->nsec3.iterations = 1;
481 1 : rr->nsec3.salt = memdup(salt, sizeof(salt));
482 1 : assert_se(rr->nsec3.salt);
483 1 : rr->nsec3.salt_size = sizeof(salt);
484 1 : rr->nsec3.next_hashed_name = memdup(next_hashed_name, sizeof(next_hashed_name));
485 1 : assert_se(rr->nsec3.next_hashed_name);
486 1 : rr->nsec3.next_hashed_name_size = sizeof(next_hashed_name);
487 :
488 1 : log_info("NSEC3: %s", strna(dns_resource_record_to_string(rr)));
489 :
490 1 : k = dnssec_nsec3_hash(rr, "eurid.eu", &h);
491 1 : assert_se(k >= 0);
492 :
493 1 : b = base32hexmem(h, k, false);
494 1 : assert_se(b);
495 1 : assert_se(strcasecmp(b, "PJ8S08RR45VIQDAQGE7EN3VHKNROTBMM") == 0);
496 1 : }
497 :
498 : #endif
499 :
500 1 : int main(int argc, char *argv[]) {
501 :
502 1 : test_dnssec_canonicalize();
503 :
504 : #if HAVE_GCRYPT
505 1 : test_dnssec_verify_dns_key();
506 1 : test_dnssec_verify_rfc8080_ed25519_example1();
507 1 : test_dnssec_verify_rfc8080_ed25519_example2();
508 1 : test_dnssec_verify_rrset();
509 1 : test_dnssec_verify_rrset2();
510 1 : test_dnssec_nsec3_hash();
511 : #endif
512 :
513 1 : return 0;
514 : }
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