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
|
/*
* 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 "api/s2n.h"
#include "s2n_test.h"
#include "testlib/s2n_testlib.h"
#include "tls/s2n_tls.h"
int main(int argc, char **argv)
{
BEGIN_TEST();
/* Send and receive correct ClientFinished */
{
DEFER_CLEANUP(struct s2n_connection *server_conn = s2n_connection_new(S2N_SERVER), s2n_connection_ptr_free);
EXPECT_NOT_NULL(server_conn);
server_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
server_conn->actual_protocol_version = S2N_TLS12;
DEFER_CLEANUP(struct s2n_connection *client_conn = s2n_connection_new(S2N_CLIENT), s2n_connection_ptr_free);
EXPECT_NOT_NULL(client_conn);
client_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
client_conn->actual_protocol_version = S2N_TLS12;
/* Calculate valid verify_data */
POSIX_GUARD(s2n_prf_client_finished(server_conn));
EXPECT_EQUAL(client_conn->client, client_conn->initial);
EXPECT_SUCCESS(s2n_client_finished_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
EXPECT_SUCCESS(s2n_client_finished_recv(server_conn));
EXPECT_EQUAL(client_conn->client, client_conn->secure);
};
/* Server rejects incorrect ClientFinished */
{
DEFER_CLEANUP(struct s2n_connection *server_conn = s2n_connection_new(S2N_SERVER), s2n_connection_ptr_free);
EXPECT_NOT_NULL(server_conn);
server_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
server_conn->actual_protocol_version = S2N_TLS12;
DEFER_CLEANUP(struct s2n_connection *client_conn = s2n_connection_new(S2N_CLIENT), s2n_connection_ptr_free);
EXPECT_NOT_NULL(client_conn);
client_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
client_conn->actual_protocol_version = S2N_TLS12;
EXPECT_SUCCESS(s2n_client_finished_send(client_conn));
/* s2n_client_finished_send calculates and writes the handshake verify data
* to the io stuffer. Since the verify data is at least 12 bytes long
* we can flip a random bit in that range to mutate it. */
client_conn->handshake.io.blob.data[10]++;
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
EXPECT_FAILURE_WITH_ERRNO(s2n_client_finished_recv(server_conn), S2N_ERR_BAD_MESSAGE);
};
/* Error if local verify_data has wrong length */
{
DEFER_CLEANUP(struct s2n_connection *server_conn = s2n_connection_new(S2N_SERVER), s2n_connection_ptr_free);
EXPECT_NOT_NULL(server_conn);
server_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
server_conn->actual_protocol_version = S2N_TLS12;
DEFER_CLEANUP(struct s2n_connection *client_conn = s2n_connection_new(S2N_CLIENT), s2n_connection_ptr_free);
EXPECT_NOT_NULL(client_conn);
client_conn->secure->cipher_suite = &s2n_ecdhe_rsa_with_aes_256_gcm_sha384;
client_conn->actual_protocol_version = S2N_TLS12;
/* Change the length of valid verify_data */
POSIX_GUARD(s2n_prf_client_finished(server_conn));
server_conn->handshake.finished_len = 1;
EXPECT_SUCCESS(s2n_client_finished_send(client_conn));
EXPECT_SUCCESS(s2n_stuffer_copy(&client_conn->handshake.io, &server_conn->handshake.io,
s2n_stuffer_data_available(&client_conn->handshake.io)));
EXPECT_FAILURE_WITH_ERRNO(s2n_client_finished_recv(server_conn), S2N_ERR_SAFETY);
};
END_TEST();
}
|
