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1 /* crypto/srp/srp.h */ | |
2 /* Written by Christophe Renou (christophe.renou@edelweb.fr) with | |
3 * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr) | |
4 * for the EdelKey project and contributed to the OpenSSL project 2004. | |
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 | |
14 * notice, this list of conditions and the following disclaimer. | |
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__ | |
60 #define __SRP_H__ | |
61 | |
62 #ifndef OPENSSL_NO_SRP | |
63 | |
64 #include <stdio.h> | |
65 #include <string.h> | |
66 | |
67 #ifdef __cplusplus | |
68 extern "C" { | |
69 #endif | |
70 | |
71 #include <openssl/safestack.h> | |
72 #include <openssl/bn.h> | |
73 #include <openssl/crypto.h> | |
74 | |
75 typedef struct SRP_gN_cache_st | |
76 { | |
77 char *b64_bn; | |
78 BIGNUM *bn; | |
79 } SRP_gN_cache; | |
80 | |
81 | |
82 DECLARE_STACK_OF(SRP_gN_cache) | |
83 | |
84 typedef struct SRP_user_pwd_st | |
85 { | |
86 char *id; | |
87 BIGNUM *s; | |
88 BIGNUM *v; | |
89 const BIGNUM *g; | |
90 const BIGNUM *N; | |
91 char *info; | |
92 } SRP_user_pwd; | |
93 | |
94 DECLARE_STACK_OF(SRP_user_pwd) | |
95 | |
96 typedef struct SRP_VBASE_st | |
97 { | |
98 STACK_OF(SRP_user_pwd) *users_pwd; | |
99 STACK_OF(SRP_gN_cache) *gN_cache; | |
100 /* to simulate a user */ | |
101 char *seed_key; | |
102 BIGNUM *default_g; | |
103 BIGNUM *default_N; | |
104 } SRP_VBASE; | |
105 | |
106 | |
107 /*Structure interne pour retenir les couples N et g*/ | |
108 typedef struct SRP_gN_st | |
109 { | |
110 char *id; | |
111 BIGNUM *g; | |
112 BIGNUM *N; | |
113 } SRP_gN; | |
114 | |
115 DECLARE_STACK_OF(SRP_gN) | |
116 | |
117 SRP_VBASE *SRP_VBASE_new(char *seed_key); | |
118 int SRP_VBASE_free(SRP_VBASE *vb); | |
119 int SRP_VBASE_init(SRP_VBASE *vb, char * verifier_file); | |
120 SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username); | |
121 char *SRP_create_verifier(const char *user, const char *pass, char **salt, | |
122 char **verifier, const char *N, const char *g); | |
123 int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, BI
GNUM **verifier, BIGNUM *N, BIGNUM *g); | |
124 | |
125 | |
126 #define SRP_NO_ERROR 0 | |
127 #define SRP_ERR_VBASE_INCOMPLETE_FILE 1 | |
128 #define SRP_ERR_VBASE_BN_LIB 2 | |
129 #define SRP_ERR_OPEN_FILE 3 | |
130 #define SRP_ERR_MEMORY 4 | |
131 | |
132 #define DB_srptype 0 | |
133 #define DB_srpverifier 1 | |
134 #define DB_srpsalt 2 | |
135 #define DB_srpid 3 | |
136 #define DB_srpgN 4 | |
137 #define DB_srpinfo 5 | |
138 #undef DB_NUMBER | |
139 #define DB_NUMBER 6 | |
140 | |
141 #define DB_SRP_INDEX 'I' | |
142 #define DB_SRP_VALID 'V' | |
143 #define DB_SRP_REVOKED 'R' | |
144 #define DB_SRP_MODIF 'v' | |
145 | |
146 | |
147 /* see srp.c */ | |
148 char * SRP_check_known_gN_param(BIGNUM* g, BIGNUM* N); | |
149 SRP_gN *SRP_get_default_gN(const char * id) ; | |
150 | |
151 /* server side .... */ | |
152 BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, BIGNUM *
N); | |
153 BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v); | |
154 int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N); | |
155 BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N) ; | |
156 | |
157 | |
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); | |
162 BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, BIGNUM *
a, BIGNUM *u); | |
163 int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N); | |
164 | |
165 #define SRP_MINIMAL_N 1024 | |
166 | |
167 #ifdef __cplusplus | |
168 } | |
169 #endif | |
170 | |
171 #endif | |
172 #endif | |
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