1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/*
* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
#include <stdio.h>
#include <string.h>
#include "api/s2n.h"
#include "s2n_test.h"
#include "stuffer/s2n_stuffer.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_tls.h"
#include "tls/s2n_tls13.h"
#include "utils/s2n_safety.h"
/* Test vectors from https://tools.ietf.org/html/rfc8448#section-3 */
/* whole cert message without 0b0001b9 header */
const char tls13_cert_message_hex[] =
"000001b50001b03082"
"01ac30820115a003020102020102300d06092a8648"
"86f70d01010b0500300e310c300a06035504031303"
"727361301e170d3136303733303031323335395a17"
"0d3236303733303031323335395a300e310c300a06"
"03550403130372736130819f300d06092a864886f7"
"0d010101050003818d0030818902818100b4bb498f"
"8279303d980836399b36c6988c0c68de55e1bdb826"
"d3901a2461eafd2de49a91d015abbc9a95137ace6c"
"1af19eaa6af98c7ced43120998e187a80ee0ccb052"
"4b1b018c3e0b63264d449a6d38e22a5fda43084674"
"8030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193"
"eff0ab9a8002c47428a6d35a8d88d79f7f1e3f0203"
"010001a31a301830090603551d1304023000300b06"
"03551d0f0404030205a0300d06092a864886f70d01"
"010b05000381810085aad2a0e5b9276b908c65f73a"
"7267170618a54c5f8a7b337d2df7a594365417f2ea"
"e8f8a58c8f8172f9319cf36b7fd6c55b80f21a0301"
"5156726096fd335e5e67f2dbf102702e608ccae6be"
"c1fc63a42a99be5c3eb7107c3c54e9b9eb2bd5203b"
"1c3b84e0a8b2f759409ba3eac9d91d402dcc0cc8f8"
"961229ac9187b42b4de10000";
/* cert only */
const char tls13_cert_hex[] =
"3082" /* without certificate chain header */
"01ac30820115a003020102020102300d06092a8648"
"86f70d01010b0500300e310c300a06035504031303"
"727361301e170d3136303733303031323335395a17"
"0d3236303733303031323335395a300e310c300a06"
"03550403130372736130819f300d06092a864886f7"
"0d010101050003818d0030818902818100b4bb498f"
"8279303d980836399b36c6988c0c68de55e1bdb826"
"d3901a2461eafd2de49a91d015abbc9a95137ace6c"
"1af19eaa6af98c7ced43120998e187a80ee0ccb052"
"4b1b018c3e0b63264d449a6d38e22a5fda43084674"
"8030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193"
"eff0ab9a8002c47428a6d35a8d88d79f7f1e3f0203"
"010001a31a301830090603551d1304023000300b06"
"03551d0f0404030205a0300d06092a864886f70d01"
"010b05000381810085aad2a0e5b9276b908c65f73a"
"7267170618a54c5f8a7b337d2df7a594365417f2ea"
"e8f8a58c8f8172f9319cf36b7fd6c55b80f21a0301"
"5156726096fd335e5e67f2dbf102702e608ccae6be"
"c1fc63a42a99be5c3eb7107c3c54e9b9eb2bd5203b"
"1c3b84e0a8b2f759409ba3eac9d91d402dcc0cc8f8"
"961229ac9187b42b4de1";
/* certificate chain header. It contains
1. Request Context length (00)
2. Cert chain length (0001b5)
3. Cert length (0001b0)
*/
const char tls13_cert_chain_header_hex[] =
"000001b50001b0";
int main(int argc, char **argv)
{
BEGIN_TEST();
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
/* Test s2n_server_cert_recv() parses tls13 certificate */
{
S2N_BLOB_FROM_HEX(tls13_cert, tls13_cert_message_hex);
struct s2n_connection *conn;
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_CLIENT));
conn->x509_validator.skip_cert_validation = 1;
/* success case in tls13 parsing mode */
conn->actual_protocol_version = S2N_TLS13;
EXPECT_EQUAL(conn->actual_protocol_version, S2N_TLS13);
EXPECT_SUCCESS(s2n_stuffer_write(&conn->handshake.io, &tls13_cert));
EXPECT_SUCCESS(s2n_server_cert_recv(conn));
EXPECT_EQUAL(s2n_stuffer_data_available(&conn->handshake.io), 0);
/* failure case in tls12 parsing mode */
conn->actual_protocol_version = S2N_TLS12;
EXPECT_EQUAL(conn->actual_protocol_version, S2N_TLS12);
EXPECT_SUCCESS(s2n_stuffer_write(&conn->handshake.io, &tls13_cert));
EXPECT_FAILURE(s2n_server_cert_recv(conn));
EXPECT_SUCCESS(s2n_connection_free(conn));
}
/* Test s2n_server_cert_send() verify server's certificate */
{
char *tls13_cert_chain_hex;
/* creating a certificate chain by concatenating
1. chain header
2. certificate
*/
EXPECT_NOT_NULL(tls13_cert_chain_hex = malloc(S2N_MAX_TEST_PEM_SIZE));
strcpy(tls13_cert_chain_hex, tls13_cert_chain_header_hex);
strcat(tls13_cert_chain_hex, tls13_cert_hex);
/* convert certificate chain hex to bytes*/
struct s2n_blob tls13_cert = { 0 };
EXPECT_SUCCESS(s2n_alloc(&tls13_cert, strlen(tls13_cert_chain_hex) / 2));
POSIX_GUARD(s2n_hex_string_to_bytes((uint8_t *) tls13_cert_chain_hex, &tls13_cert));
S2N_BLOB_FROM_HEX(tls13_cert_chain, tls13_cert_hex);
struct s2n_connection *conn;
uint8_t certificate_request_context_len;
struct s2n_cert cert = { .raw = tls13_cert_chain, .next = NULL };
/* .chain_size is size of cert + 3 for the 3 bytes to express the length */
struct s2n_cert_chain cert_chain = { .head = &cert, .chain_size = tls13_cert_chain.size + 3 };
struct s2n_cert_chain_and_key cert_chain_and_key = { .cert_chain = &cert_chain };
/* tls13 mode */
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
conn->actual_protocol_version = S2N_TLS13;
conn->handshake_params.our_chain_and_key = &cert_chain_and_key;
EXPECT_EQUAL(conn->actual_protocol_version, S2N_TLS13);
EXPECT_SUCCESS(s2n_server_cert_send(conn));
EXPECT_EQUAL(s2n_stuffer_data_available(&conn->handshake.io), tls13_cert.size + 2);
EXPECT_SUCCESS(s2n_stuffer_read_uint8(&conn->handshake.io, &certificate_request_context_len));
/* server's certificate request context should always be of zero length */
EXPECT_EQUAL(certificate_request_context_len, 0);
EXPECT_SUCCESS(s2n_connection_free(conn));
/* tls12 mode */
EXPECT_NOT_NULL(conn = s2n_connection_new(S2N_SERVER));
conn->actual_protocol_version = S2N_TLS12;
conn->handshake_params.our_chain_and_key = &cert_chain_and_key;
EXPECT_EQUAL(conn->actual_protocol_version, S2N_TLS12);
EXPECT_SUCCESS(s2n_server_cert_send(conn));
/* In tls1.2 there is no certificate request context.
TLS1.2 Cert length = TLS1.3 Cert length -1 (server's request context)*/
EXPECT_EQUAL(s2n_stuffer_data_available(&conn->handshake.io), tls13_cert.size - 1);
EXPECT_SUCCESS(s2n_connection_free(conn));
free(tls13_cert_chain_hex);
/* free memory allocated in s2n_alloc*/
free(tls13_cert.data);
}
/* Test server sends cert and client receives cert for tls 1.3 */
{
EXPECT_SUCCESS(s2n_enable_tls13_in_test());
struct s2n_connection *server_conn;
struct s2n_connection *client_conn;
EXPECT_NOT_NULL(server_conn = s2n_connection_new(S2N_SERVER));
EXPECT_NOT_NULL(client_conn = s2n_connection_new(S2N_CLIENT));
server_conn->actual_protocol_version = S2N_TLS13;
client_conn->actual_protocol_version = S2N_TLS13;
client_conn->x509_validator.skip_cert_validation = 1;
S2N_BLOB_FROM_HEX(tls13_cert_chain, tls13_cert_hex);
S2N_BLOB_FROM_HEX(tls13_cert_message, tls13_cert_message_hex);
struct s2n_cert cert = { .raw = tls13_cert_chain, .next = NULL };
struct s2n_cert_chain cert_chain = { .head = &cert, .chain_size = tls13_cert_chain.size + 3 };
struct s2n_cert_chain_and_key cert_chain_and_key = { .cert_chain = &cert_chain };
server_conn->handshake_params.our_chain_and_key = &cert_chain_and_key;
EXPECT_SUCCESS(s2n_server_cert_send(server_conn));
EXPECT_EQUAL(s2n_stuffer_data_available(&server_conn->handshake.io), tls13_cert_message.size);
EXPECT_SUCCESS(s2n_stuffer_copy(&server_conn->handshake.io, &client_conn->handshake.io, s2n_stuffer_data_available(&server_conn->handshake.io)));
EXPECT_EQUAL(s2n_stuffer_data_available(&client_conn->handshake.io), tls13_cert_message.size);
EXPECT_SUCCESS(s2n_server_cert_recv(client_conn));
EXPECT_SUCCESS(s2n_connection_free(server_conn));
EXPECT_SUCCESS(s2n_connection_free(client_conn));
EXPECT_SUCCESS(s2n_disable_tls13_in_test());
};
END_TEST();
}
|
