2 * Copyright 2004-2020 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2004, EdelKey Project. All Rights Reserved.
5 * Licensed under the Apache License 2.0 (the "License"). You may not use
6 * this file except in compliance with the License. You can obtain a copy
7 * in the file LICENSE in the source distribution or at
8 * https://www.openssl.org/source/license.html
10 * Originally written by Christophe Renou and Peter Sylvester,
11 * for the EdelKey project.
15 # define OPENSSL_SRP_H
18 # include <openssl/macros.h>
19 # ifndef OPENSSL_NO_DEPRECATED_3_0
23 #include <openssl/opensslconf.h>
25 #ifndef OPENSSL_NO_SRP
28 # include <openssl/safestack.h>
29 # include <openssl/bn.h>
30 # include <openssl/crypto.h>
36 DEFINE_OR_DECLARE_STACK_OF(SRP_gN_cache)
37 DEFINE_OR_DECLARE_STACK_OF(SRP_user_pwd)
38 DEFINE_OR_DECLARE_STACK_OF(SRP_gN)
40 typedef struct SRP_gN_cache_st {
45 typedef struct SRP_user_pwd_st {
50 /* Not owned by us. */
57 SRP_user_pwd *SRP_user_pwd_new(void);
58 void SRP_user_pwd_free(SRP_user_pwd *user_pwd);
60 void SRP_user_pwd_set_gN(SRP_user_pwd *user_pwd, const BIGNUM *g, const BIGNUM *N);
61 int SRP_user_pwd_set1_ids(SRP_user_pwd *user_pwd, const char *id, const char *info);
62 int SRP_user_pwd_set0_sv(SRP_user_pwd *user_pwd, BIGNUM *s, BIGNUM *v);
65 typedef struct SRP_VBASE_st {
66 STACK_OF(SRP_user_pwd) *users_pwd;
67 STACK_OF(SRP_gN_cache) *gN_cache;
68 /* to simulate a user */
70 const BIGNUM *default_g;
71 const BIGNUM *default_N;
75 * Internal structure storing N and g pair
77 typedef struct SRP_gN_st {
84 SRP_VBASE *SRP_VBASE_new(char *seed_key);
85 void SRP_VBASE_free(SRP_VBASE *vb);
86 int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file);
88 int SRP_VBASE_add0_user(SRP_VBASE *vb, SRP_user_pwd *user_pwd);
89 /* This method ignores the configured seed and fails for an unknown user. */
90 DEPRECATEDIN_1_1_0(SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username))
91 /* NOTE: unlike in SRP_VBASE_get_by_user, caller owns the returned pointer.*/
92 SRP_user_pwd *SRP_VBASE_get1_by_user(SRP_VBASE *vb, char *username);
94 char *SRP_create_verifier_ex(const char *user, const char *pass, char **salt,
95 char **verifier, const char *N, const char *g,
96 OPENSSL_CTX *libctx, const char *propq);
97 char *SRP_create_verifier(const char *user, const char *pass, char **salt,
98 char **verifier, const char *N, const char *g);
99 int SRP_create_verifier_BN_ex(const char *user, const char *pass, BIGNUM **salt,
100 BIGNUM **verifier, const BIGNUM *N,
101 const BIGNUM *g, OPENSSL_CTX *libctx,
103 int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
104 BIGNUM **verifier, const BIGNUM *N,
107 # define SRP_NO_ERROR 0
108 # define SRP_ERR_VBASE_INCOMPLETE_FILE 1
109 # define SRP_ERR_VBASE_BN_LIB 2
110 # define SRP_ERR_OPEN_FILE 3
111 # define SRP_ERR_MEMORY 4
113 # define DB_srptype 0
114 # define DB_srpverifier 1
115 # define DB_srpsalt 2
118 # define DB_srpinfo 5
122 # define DB_SRP_INDEX 'I'
123 # define DB_SRP_VALID 'V'
124 # define DB_SRP_REVOKED 'R'
125 # define DB_SRP_MODIF 'v'
128 char *SRP_check_known_gN_param(const BIGNUM *g, const BIGNUM *N);
129 SRP_gN *SRP_get_default_gN(const char *id);
131 /* server side .... */
132 BIGNUM *SRP_Calc_server_key(const BIGNUM *A, const BIGNUM *v, const BIGNUM *u,
133 const BIGNUM *b, const BIGNUM *N);
134 BIGNUM *SRP_Calc_B_ex(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
135 const BIGNUM *v, OPENSSL_CTX *libctx, const char *propq);
136 BIGNUM *SRP_Calc_B(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
138 int SRP_Verify_A_mod_N(const BIGNUM *A, const BIGNUM *N);
139 BIGNUM *SRP_Calc_u_ex(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N,
140 OPENSSL_CTX *libctx, const char *propq);
141 BIGNUM *SRP_Calc_u(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N);
143 /* client side .... */
144 BIGNUM *SRP_Calc_x_ex(const BIGNUM *s, const char *user, const char *pass,
145 OPENSSL_CTX *libctx, const char *propq);
146 BIGNUM *SRP_Calc_x(const BIGNUM *s, const char *user, const char *pass);
147 BIGNUM *SRP_Calc_A(const BIGNUM *a, const BIGNUM *N, const BIGNUM *g);
148 BIGNUM *SRP_Calc_client_key_ex(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
149 const BIGNUM *x, const BIGNUM *a, const BIGNUM *u,
150 OPENSSL_CTX *libctx, const char *propq);
151 BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
152 const BIGNUM *x, const BIGNUM *a, const BIGNUM *u);
153 int SRP_Verify_B_mod_N(const BIGNUM *B, const BIGNUM *N);
155 # define SRP_MINIMAL_N 1024