3 * Written by Christophe Renou (christophe.renou@edelweb.fr) with the
4 * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the
5 * EdelKey project and contributed to the OpenSSL project 2004.
7 /* ====================================================================
8 * Copyright (c) 2004 The OpenSSL Project. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
22 * 3. All advertising materials mentioning features or use of this
23 * software must display the following acknowledgment:
24 * "This product includes software developed by the OpenSSL Project
25 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
27 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
28 * endorse or promote products derived from this software without
29 * prior written permission. For written permission, please contact
30 * licensing@OpenSSL.org.
32 * 5. Products derived from this software may not be called "OpenSSL"
33 * nor may "OpenSSL" appear in their names without prior written
34 * permission of the OpenSSL Project.
36 * 6. Redistributions of any form whatsoever must retain the following
38 * "This product includes software developed by the OpenSSL Project
39 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
41 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
42 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
44 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
47 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
48 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
49 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
50 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
51 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
52 * OF THE POSSIBILITY OF SUCH DAMAGE.
53 * ====================================================================
55 * This product includes cryptographic software written by Eric Young
56 * (eay@cryptsoft.com). This product includes software written by Tim
57 * Hudson (tjh@cryptsoft.com).
63 # ifndef OPENSSL_NO_SRP
72 # include <openssl/safestack.h>
73 # include <openssl/bn.h>
74 # include <openssl/crypto.h>
76 typedef struct SRP_gN_cache_st {
82 DECLARE_STACK_OF(SRP_gN_cache)
84 typedef struct SRP_user_pwd_st {
93 DECLARE_STACK_OF(SRP_user_pwd)
95 typedef struct SRP_VBASE_st {
96 STACK_OF(SRP_user_pwd) *users_pwd;
97 STACK_OF(SRP_gN_cache) *gN_cache;
98 /* to simulate a user */
105 * Structure interne pour retenir les couples N et g
107 typedef struct SRP_gN_st {
113 DECLARE_STACK_OF(SRP_gN)
115 SRP_VBASE *SRP_VBASE_new(char *seed_key);
116 void SRP_VBASE_free(SRP_VBASE *vb);
117 int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file);
118 SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username);
119 char *SRP_create_verifier(const char *user, const char *pass, char **salt,
120 char **verifier, const char *N, const char *g);
121 int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
122 BIGNUM **verifier, const BIGNUM *N,
125 # define SRP_NO_ERROR 0
126 # define SRP_ERR_VBASE_INCOMPLETE_FILE 1
127 # define SRP_ERR_VBASE_BN_LIB 2
128 # define SRP_ERR_OPEN_FILE 3
129 # define SRP_ERR_MEMORY 4
131 # define DB_srptype 0
132 # define DB_srpverifier 1
133 # define DB_srpsalt 2
136 # define DB_srpinfo 5
140 # define DB_SRP_INDEX 'I'
141 # define DB_SRP_VALID 'V'
142 # define DB_SRP_REVOKED 'R'
143 # define DB_SRP_MODIF 'v'
146 char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N);
147 SRP_gN *SRP_get_default_gN(const char *id);
149 /* server side .... */
150 BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b,
152 BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v);
153 int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N);
154 BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N);
156 /* client side .... */
157 BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass);
158 BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g);
159 BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x,
160 BIGNUM *a, BIGNUM *u);
161 int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N);
163 # define SRP_MINIMAL_N 1024