1 /*
2  * pppcrypt.c - PPP/DES linkage for MS-CHAP and EAP SRP-SHA1
3  *
4  * Extracted from chap_ms.c by James Carlson.
5  *
6  * Copyright (c) 1995 Eric Rosenquist.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in
17  *    the documentation and/or other materials provided with the
18  *    distribution.
19  *
20  * 3. The name(s) of the authors of this software must not be used to
21  *    endorse or promote products derived from this software without
22  *    prior written permission.
23  *
24  * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
25  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
26  * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
27  * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
28  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
29  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
30  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
31  */
32 
33 #include "netif/ppp/ppp_opts.h"
34 #if PPP_SUPPORT /* don't build if not configured for use in lwipopts.h */
35 
36 /* This header file is included in all PPP modules needing hashes and/or ciphers */
37 
38 #ifndef PPPCRYPT_H
39 #define	PPPCRYPT_H
40 
41 /*
42  * If included PolarSSL copy is not used, user is expected to include
43  * external libraries in arch/cc.h (which is included by lwip/arch.h).
44  */
45 #include "lwip/arch.h"
46 
47 /*
48  * Map hashes and ciphers functions to PolarSSL
49  */
50 #if !LWIP_USE_EXTERNAL_MBEDTLS
51 
52 #include "netif/ppp/polarssl/md4.h"
53 #define lwip_md4_context md4_context
54 #define lwip_md4_init(context)
55 #define lwip_md4_starts md4_starts
56 #define lwip_md4_update md4_update
57 #define lwip_md4_finish md4_finish
58 #define lwip_md4_free(context)
59 
60 #include "netif/ppp/polarssl/md5.h"
61 #define lwip_md5_context md5_context
62 #define lwip_md5_init(context)
63 #define lwip_md5_starts md5_starts
64 #define lwip_md5_update md5_update
65 #define lwip_md5_finish md5_finish
66 #define lwip_md5_free(context)
67 
68 #include "netif/ppp/polarssl/sha1.h"
69 #define lwip_sha1_context sha1_context
70 #define lwip_sha1_init(context)
71 #define lwip_sha1_starts sha1_starts
72 #define lwip_sha1_update sha1_update
73 #define lwip_sha1_finish sha1_finish
74 #define lwip_sha1_free(context)
75 
76 #include "netif/ppp/polarssl/des.h"
77 #define lwip_des_context des_context
78 #define lwip_des_init(context)
79 #define lwip_des_setkey_enc des_setkey_enc
80 #define lwip_des_crypt_ecb des_crypt_ecb
81 #define lwip_des_free(context)
82 
83 #include "netif/ppp/polarssl/arc4.h"
84 #define lwip_arc4_context arc4_context
85 #define lwip_arc4_init(context)
86 #define lwip_arc4_setup arc4_setup
87 #define lwip_arc4_crypt arc4_crypt
88 #define lwip_arc4_free(context)
89 
90 #endif /* !LWIP_USE_EXTERNAL_MBEDTLS */
91 
92 /*
93  * Map hashes and ciphers functions to mbed TLS
94  */
95 #if LWIP_USE_EXTERNAL_MBEDTLS
96 
97 #define lwip_md4_context mbedtls_md4_context
98 #define lwip_md4_init mbedtls_md4_init
99 #define lwip_md4_starts mbedtls_md4_starts
100 #define lwip_md4_update mbedtls_md4_update
101 #define lwip_md4_finish mbedtls_md4_finish
102 #define lwip_md4_free mbedtls_md4_free
103 
104 #define lwip_md5_context mbedtls_md5_context
105 #define lwip_md5_init mbedtls_md5_init
106 #define lwip_md5_starts mbedtls_md5_starts
107 #define lwip_md5_update mbedtls_md5_update
108 #define lwip_md5_finish mbedtls_md5_finish
109 #define lwip_md5_free mbedtls_md5_free
110 
111 #define lwip_sha1_context mbedtls_sha1_context
112 #define lwip_sha1_init mbedtls_sha1_init
113 #define lwip_sha1_starts mbedtls_sha1_starts
114 #define lwip_sha1_update mbedtls_sha1_update
115 #define lwip_sha1_finish mbedtls_sha1_finish
116 #define lwip_sha1_free mbedtls_sha1_free
117 
118 #define lwip_des_context mbedtls_des_context
119 #define lwip_des_init mbedtls_des_init
120 #define lwip_des_setkey_enc mbedtls_des_setkey_enc
121 #define lwip_des_crypt_ecb mbedtls_des_crypt_ecb
122 #define lwip_des_free mbedtls_des_free
123 
124 #define lwip_arc4_context mbedtls_arc4_context
125 #define lwip_arc4_init mbedtls_arc4_init
126 #define lwip_arc4_setup mbedtls_arc4_setup
127 #define lwip_arc4_crypt(context, buffer, length) mbedtls_arc4_crypt(context, length, buffer, buffer)
128 #define lwip_arc4_free mbedtls_arc4_free
129 
130 #endif /* LWIP_USE_EXTERNAL_MBEDTLS */
131 
132 void pppcrypt_56_to_64_bit_key(u_char *key, u_char *des_key);
133 
134 #endif /* PPPCRYPT_H */
135 
136 #endif /* PPP_SUPPORT */
137