1 /***************************************************************************
2  * Copyright (c) 2024 Microsoft Corporation
3  *
4  * This program and the accompanying materials are made available under the
5  * terms of the MIT License which is available at
6  * https://opensource.org/licenses/MIT.
7  *
8  * SPDX-License-Identifier: MIT
9  **************************************************************************/
10 
11 
12 /**************************************************************************/
13 /**************************************************************************/
14 /**                                                                       */
15 /** NetX Secure Component                                                 */
16 /**                                                                       */
17 /**    Transport Layer Security (TLS)                                     */
18 /**                                                                       */
19 /**************************************************************************/
20 /**************************************************************************/
21 
22 #define NX_SECURE_SOURCE_CODE
23 
24 #include "nx_secure_tls.h"
25 
26 #if (NX_SECURE_TLS_TLS_1_3_ENABLED)
27 /**************************************************************************/
28 /*                                                                        */
29 /*  FUNCTION                                               RELEASE        */
30 /*                                                                        */
31 /*    _nx_secure_tls_process_encrypted_extensions         PORTABLE C      */
32 /*                                                           6.1          */
33 /*  AUTHOR                                                                */
34 /*                                                                        */
35 /*    Timothy Stapko, Microsoft Corporation                               */
36 /*                                                                        */
37 /*  DESCRIPTION                                                           */
38 /*                                                                        */
39 /*    This function processes the encrypted extensions received after a   */
40 /*    ServerHello message in a TLS 1.3 encrypted handshake.               */
41 /*                                                                        */
42 /*  INPUT                                                                 */
43 /*                                                                        */
44 /*    tls_session                           TLS control block             */
45 /*    packet_buffer                         Pointer to message data       */
46 /*    message_length                        Length of message data (bytes)*/
47 /*                                                                        */
48 /*  OUTPUT                                                                */
49 /*                                                                        */
50 /*    status                                Completion status             */
51 /*                                                                        */
52 /*  CALLS                                                                 */
53 /*                                                                        */
54 /*    _nx_secure_tls_ciphersuite_lookup     Lookup current ciphersuite    */
55 /*                                                                        */
56 /*  CALLED BY                                                             */
57 /*                                                                        */
58 /*    _nx_secure_tls_server_handshake       Process extensions            */
59 /*                                                                        */
60 /*  RELEASE HISTORY                                                       */
61 /*                                                                        */
62 /*    DATE              NAME                      DESCRIPTION             */
63 /*                                                                        */
64 /*  05-19-2020     Timothy Stapko           Initial Version 6.0           */
65 /*  09-30-2020     Timothy Stapko           Modified comment(s), update   */
66 /*                                            ciphersuite lookup method,  */
67 /*                                            resulting in version 6.1    */
68 /*                                                                        */
69 /**************************************************************************/
_nx_secure_tls_process_encrypted_extensions(NX_SECURE_TLS_SESSION * tls_session,UCHAR * packet_buffer,UINT message_length)70 UINT _nx_secure_tls_process_encrypted_extensions(NX_SECURE_TLS_SESSION *tls_session,
71                                                  UCHAR *packet_buffer, UINT message_length)
72 {
73 UINT status;
74 
75     status = NX_SUCCESS;
76 
77     /* Process encrypted extensions here! */
78     NX_PARAMETER_NOT_USED(packet_buffer);
79     NX_PARAMETER_NOT_USED(message_length);
80 
81 #ifndef NX_SECURE_TLS_CLIENT_DISABLED
82 
83     /* Set our state to indicate we successfully parsed the Certificate message. */
84     tls_session -> nx_secure_tls_client_state = NX_SECURE_TLS_CLIENT_STATE_ENCRYPTED_EXTENSIONS;
85 #else
86     NX_PARAMETER_NOT_USED(tls_session);
87 #endif
88 
89 
90     return(status);
91 }
92 #endif
93 
94