LTKCPP-- LLRP Toolkit C Plus Plus Library
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00001 /* crypto/srp/srp.h */ 00002 /* 00003 * Written by Christophe Renou (christophe.renou@edelweb.fr) with the 00004 * precious help of Peter Sylvester (peter.sylvester@edelweb.fr) for the 00005 * EdelKey project and contributed to the OpenSSL project 2004. 00006 */ 00007 /* ==================================================================== 00008 * Copyright (c) 2004 The OpenSSL Project. All rights reserved. 00009 * 00010 * Redistribution and use in source and binary forms, with or without 00011 * modification, are permitted provided that the following conditions 00012 * are met: 00013 * 00014 * 1. Redistributions of source code must retain the above copyright 00015 * notice, this list of conditions and the following disclaimer. 00016 * 00017 * 2. Redistributions in binary form must reproduce the above copyright 00018 * notice, this list of conditions and the following disclaimer in 00019 * the documentation and/or other materials provided with the 00020 * distribution. 00021 * 00022 * 3. All advertising materials mentioning features or use of this 00023 * software must display the following acknowledgment: 00024 * "This product includes software developed by the OpenSSL Project 00025 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 00026 * 00027 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 00028 * endorse or promote products derived from this software without 00029 * prior written permission. For written permission, please contact 00030 * licensing@OpenSSL.org. 00031 * 00032 * 5. Products derived from this software may not be called "OpenSSL" 00033 * nor may "OpenSSL" appear in their names without prior written 00034 * permission of the OpenSSL Project. 00035 * 00036 * 6. Redistributions of any form whatsoever must retain the following 00037 * acknowledgment: 00038 * "This product includes software developed by the OpenSSL Project 00039 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 00040 * 00041 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 00042 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00043 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 00044 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 00045 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00046 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 00047 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00048 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00049 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 00050 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00051 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 00052 * OF THE POSSIBILITY OF SUCH DAMAGE. 00053 * ==================================================================== 00054 * 00055 * This product includes cryptographic software written by Eric Young 00056 * (eay@cryptsoft.com). This product includes software written by Tim 00057 * Hudson (tjh@cryptsoft.com). 00058 * 00059 */ 00060 #ifndef __SRP_H__ 00061 # define __SRP_H__ 00062 00063 # ifndef OPENSSL_NO_SRP 00064 00065 # include <stdio.h> 00066 # include <string.h> 00067 00068 #ifdef __cplusplus 00069 extern "C" { 00070 #endif 00071 00072 # include <openssl/safestack.h> 00073 # include <openssl/bn.h> 00074 # include <openssl/crypto.h> 00075 00076 typedef struct SRP_gN_cache_st { 00077 char *b64_bn; 00078 BIGNUM *bn; 00079 } SRP_gN_cache; 00080 00081 00082 DECLARE_STACK_OF(SRP_gN_cache) 00083 00084 typedef struct SRP_user_pwd_st { 00085 char *id; 00086 BIGNUM *s; 00087 BIGNUM *v; 00088 const BIGNUM *g; 00089 const BIGNUM *N; 00090 char *info; 00091 } SRP_user_pwd; 00092 00093 DECLARE_STACK_OF(SRP_user_pwd) 00094 00095 typedef struct SRP_VBASE_st { 00096 STACK_OF(SRP_user_pwd) *users_pwd; 00097 STACK_OF(SRP_gN_cache) *gN_cache; 00098 /* to simulate a user */ 00099 char *seed_key; 00100 BIGNUM *default_g; 00101 BIGNUM *default_N; 00102 } SRP_VBASE; 00103 00104 /* 00105 * Structure interne pour retenir les couples N et g 00106 */ 00107 typedef struct SRP_gN_st { 00108 char *id; 00109 BIGNUM *g; 00110 BIGNUM *N; 00111 } SRP_gN; 00112 00113 DECLARE_STACK_OF(SRP_gN) 00114 00115 SRP_VBASE *SRP_VBASE_new(char *seed_key); 00116 int SRP_VBASE_free(SRP_VBASE *vb); 00117 int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file); 00118 SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username); 00119 char *SRP_create_verifier(const char *user, const char *pass, char **salt, 00120 char **verifier, const char *N, const char *g); 00121 int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt, 00122 BIGNUM **verifier, BIGNUM *N, BIGNUM *g); 00123 00124 # define SRP_NO_ERROR 0 00125 # define SRP_ERR_VBASE_INCOMPLETE_FILE 1 00126 # define SRP_ERR_VBASE_BN_LIB 2 00127 # define SRP_ERR_OPEN_FILE 3 00128 # define SRP_ERR_MEMORY 4 00129 00130 # define DB_srptype 0 00131 # define DB_srpverifier 1 00132 # define DB_srpsalt 2 00133 # define DB_srpid 3 00134 # define DB_srpgN 4 00135 # define DB_srpinfo 5 00136 # undef DB_NUMBER 00137 # define DB_NUMBER 6 00138 00139 # define DB_SRP_INDEX 'I' 00140 # define DB_SRP_VALID 'V' 00141 # define DB_SRP_REVOKED 'R' 00142 # define DB_SRP_MODIF 'v' 00143 00144 /* see srp.c */ 00145 char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N); 00146 SRP_gN *SRP_get_default_gN(const char *id); 00147 00148 /* server side .... */ 00149 BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, 00150 BIGNUM *N); 00151 BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v); 00152 int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N); 00153 BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N); 00154 00155 /* client side .... */ 00156 BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass); 00157 BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g); 00158 BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, 00159 BIGNUM *a, BIGNUM *u); 00160 int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N); 00161 00162 # define SRP_MINIMAL_N 1024 00163 00164 #ifdef __cplusplus 00165 } 00166 #endif 00167 00168 # endif 00169 #endif