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0f113f3e MC |
1 | /* |
2 | * Written by Christophe Renou (christophe.renou@edelweb.fr) with the | |
3 | * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the | |
4 | * EdelKey project and contributed to the OpenSSL project 2004. | |
edc032b5 BL |
5 | */ |
6 | /* ==================================================================== | |
7 | * Copyright (c) 2004 The OpenSSL Project. All rights reserved. | |
8 | * | |
9 | * Redistribution and use in source and binary forms, with or without | |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * | |
13 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 14 | * notice, this list of conditions and the following disclaimer. |
edc032b5 BL |
15 | * |
16 | * 2. Redistributions in binary form must reproduce the above copyright | |
17 | * notice, this list of conditions and the following disclaimer in | |
18 | * the documentation and/or other materials provided with the | |
19 | * distribution. | |
20 | * | |
21 | * 3. All advertising materials mentioning features or use of this | |
22 | * software must display the following acknowledgment: | |
23 | * "This product includes software developed by the OpenSSL Project | |
24 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
25 | * | |
26 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
27 | * endorse or promote products derived from this software without | |
28 | * prior written permission. For written permission, please contact | |
29 | * licensing@OpenSSL.org. | |
30 | * | |
31 | * 5. Products derived from this software may not be called "OpenSSL" | |
32 | * nor may "OpenSSL" appear in their names without prior written | |
33 | * permission of the OpenSSL Project. | |
34 | * | |
35 | * 6. Redistributions of any form whatsoever must retain the following | |
36 | * acknowledgment: | |
37 | * "This product includes software developed by the OpenSSL Project | |
38 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
39 | * | |
40 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
41 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
43 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
44 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
45 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
46 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
47 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
49 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
50 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
51 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
52 | * ==================================================================== | |
53 | * | |
54 | * This product includes cryptographic software written by Eric Young | |
55 | * (eay@cryptsoft.com). This product includes software written by Tim | |
56 | * Hudson (tjh@cryptsoft.com). | |
57 | * | |
58 | */ | |
59 | #ifndef __SRP_H__ | |
0f113f3e | 60 | # define __SRP_H__ |
edc032b5 | 61 | |
857048a7 | 62 | #include <openssl/opensslconf.h> |
edc032b5 | 63 | |
857048a7 RS |
64 | # ifdef OPENSSL_NO_SRP |
65 | # error SRP is disabled. | |
66 | # endif | |
67 | ||
68 | # include <stdio.h> | |
69 | # include <string.h> | |
edc032b5 BL |
70 | |
71 | #ifdef __cplusplus | |
72 | extern "C" { | |
73 | #endif | |
74 | ||
857048a7 RS |
75 | # include <openssl/safestack.h> |
76 | # include <openssl/bn.h> | |
77 | # include <openssl/crypto.h> | |
edc032b5 | 78 | |
0f113f3e MC |
79 | typedef struct SRP_gN_cache_st { |
80 | char *b64_bn; | |
81 | BIGNUM *bn; | |
82 | } SRP_gN_cache; | |
edc032b5 BL |
83 | |
84 | ||
85885715 | 85 | DEFINE_STACK_OF(SRP_gN_cache) |
edc032b5 | 86 | |
0f113f3e MC |
87 | typedef struct SRP_user_pwd_st { |
88 | char *id; | |
89 | BIGNUM *s; | |
90 | BIGNUM *v; | |
91 | const BIGNUM *g; | |
92 | const BIGNUM *N; | |
93 | char *info; | |
94 | } SRP_user_pwd; | |
edc032b5 | 95 | |
85885715 | 96 | DEFINE_STACK_OF(SRP_user_pwd) |
edc032b5 | 97 | |
0f113f3e MC |
98 | typedef struct SRP_VBASE_st { |
99 | STACK_OF(SRP_user_pwd) *users_pwd; | |
100 | STACK_OF(SRP_gN_cache) *gN_cache; | |
edc032b5 | 101 | /* to simulate a user */ |
0f113f3e MC |
102 | char *seed_key; |
103 | BIGNUM *default_g; | |
104 | BIGNUM *default_N; | |
105 | } SRP_VBASE; | |
edc032b5 | 106 | |
0f113f3e MC |
107 | /* |
108 | * Structure interne pour retenir les couples N et g | |
109 | */ | |
110 | typedef struct SRP_gN_st { | |
111 | char *id; | |
112 | BIGNUM *g; | |
113 | BIGNUM *N; | |
114 | } SRP_gN; | |
edc032b5 | 115 | |
85885715 | 116 | DEFINE_STACK_OF(SRP_gN) |
edc032b5 BL |
117 | |
118 | SRP_VBASE *SRP_VBASE_new(char *seed_key); | |
895cba19 | 119 | void SRP_VBASE_free(SRP_VBASE *vb); |
0f113f3e | 120 | int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file); |
edc032b5 BL |
121 | SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username); |
122 | char *SRP_create_verifier(const char *user, const char *pass, char **salt, | |
0f113f3e MC |
123 | char **verifier, const char *N, const char *g); |
124 | int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, | |
125 | BIGNUM **verifier, const BIGNUM *N, | |
126 | const BIGNUM *g); | |
127 | ||
857048a7 RS |
128 | # define SRP_NO_ERROR 0 |
129 | # define SRP_ERR_VBASE_INCOMPLETE_FILE 1 | |
130 | # define SRP_ERR_VBASE_BN_LIB 2 | |
131 | # define SRP_ERR_OPEN_FILE 3 | |
132 | # define SRP_ERR_MEMORY 4 | |
133 | ||
134 | # define DB_srptype 0 | |
135 | # define DB_srpverifier 1 | |
136 | # define DB_srpsalt 2 | |
137 | # define DB_srpid 3 | |
138 | # define DB_srpgN 4 | |
139 | # define DB_srpinfo 5 | |
140 | # undef DB_NUMBER | |
141 | # define DB_NUMBER 6 | |
142 | ||
143 | # define DB_SRP_INDEX 'I' | |
144 | # define DB_SRP_VALID 'V' | |
145 | # define DB_SRP_REVOKED 'R' | |
146 | # define DB_SRP_MODIF 'v' | |
edc032b5 BL |
147 | |
148 | /* see srp.c */ | |
0f113f3e MC |
149 | char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N); |
150 | SRP_gN *SRP_get_default_gN(const char *id); | |
edc032b5 BL |
151 | |
152 | /* server side .... */ | |
0f113f3e MC |
153 | BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, |
154 | BIGNUM *N); | |
edc032b5 BL |
155 | BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v); |
156 | int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N); | |
0f113f3e | 157 | BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N); |
edc032b5 BL |
158 | |
159 | /* client side .... */ | |
160 | BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass); | |
161 | BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g); | |
0f113f3e MC |
162 | BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, |
163 | BIGNUM *a, BIGNUM *u); | |
edc032b5 BL |
164 | int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N); |
165 | ||
857048a7 | 166 | # define SRP_MINIMAL_N 1024 |
edc032b5 BL |
167 | |
168 | #ifdef __cplusplus | |
169 | } | |
170 | #endif | |
171 | ||
edc032b5 | 172 | #endif |