blob: 233245cde6f63f7f11408bb587b572d7d9fb84bd (
plain)
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
|
/***************************************************************************
* Copyright (c) 2024 Microsoft Corporation
* Copyright (c) 2025-present Eclipse ThreadX Contributors
*
* This program and the accompanying materials are made available under the
* terms of the MIT License which is available at
* https://opensource.org/licenses/MIT.
*
* SPDX-License-Identifier: MIT
**************************************************************************/
/**************************************************************************/
/**************************************************************************/
/** */
/** NetX Secure Component */
/** */
/** Transport Layer Security (TLS) */
/** */
/**************************************************************************/
/**************************************************************************/
#define NX_SECURE_SOURCE_CODE
#include "nx_secure_tls.h"
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _nx_secure_tls_send_client_key_exchange PORTABLE C */
/* 6.4.3 */
/* AUTHOR */
/* */
/* Timothy Stapko, Microsoft Corporation */
/* */
/* DESCRIPTION */
/* */
/* This function encrypts the Pre-Master Secret (generated earlier) */
/* and populates an NX_PACKET with the complete ClientKeyExchange */
/* message (to be sent by the caller). It also will send ephemeral */
/* keys for ciphersuites that require them. */
/* */
/* INPUT */
/* */
/* tls_session TLS control block */
/* send_packet Outgoing TLS packet */
/* */
/* OUTPUT */
/* */
/* status Completion status */
/* */
/* CALLS */
/* */
/* [nx_secure_generate_client_key_exchange] */
/* Generate ClientKeyExchange */
/* _nx_secure_tls_remote_certificate_free_all */
/* Free all remote certificates */
/* */
/* CALLED BY */
/* */
/* _nx_secure_dtls_client_handshake DTLS client state machine */
/* _nx_secure_tls_client_handshake TLS client state machine */
/* */
/**************************************************************************/
UINT _nx_secure_tls_send_client_key_exchange(NX_SECURE_TLS_SESSION *tls_session,
NX_PACKET *send_packet)
{
#if !defined(NX_SECURE_TLS_CLIENT_DISABLED)
UINT status;
ULONG data_size = 0;
ULONG buffer_length;
if (tls_session -> nx_secure_tls_session_ciphersuite == NX_NULL)
{
/* Likely internal error since at this point ciphersuite negotiation was theoretically completed. */
return(NX_SECURE_TLS_UNKNOWN_CIPHERSUITE);
}
buffer_length = (ULONG)(send_packet -> nx_packet_data_end) - (ULONG)(send_packet -> nx_packet_append_ptr);
status = tls_session -> nx_secure_generate_client_key_exchange(tls_session -> nx_secure_tls_session_ciphersuite,
&tls_session -> nx_secure_tls_key_material, &tls_session -> nx_secure_tls_credentials,
send_packet -> nx_packet_append_ptr,
buffer_length,
&data_size, tls_session -> nx_secure_public_cipher_metadata_area,
tls_session -> nx_secure_public_cipher_metadata_size,
tls_session -> nx_secure_public_auth_metadata_area,
tls_session -> nx_secure_public_auth_metadata_size);
if (status)
{
_nx_secure_tls_remote_certificate_free_all(tls_session);
return(status);
}
send_packet -> nx_packet_append_ptr = send_packet -> nx_packet_append_ptr + data_size;
send_packet -> nx_packet_length = send_packet -> nx_packet_length + data_size;
return(NX_SECURE_TLS_SUCCESS);
#else
NX_PARAMETER_NOT_USED(tls_session);
NX_PARAMETER_NOT_USED(send_packet);
return(NX_SECURE_TLS_INVALID_STATE);
#endif
}
|
