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