2 * Copyright 2004-2018 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.
17 #include <openssl/opensslconf.h>
19 #ifndef OPENSSL_NO_SRP
22 # include <openssl/safestack.h>
23 # include <openssl/bn.h>
24 # include <openssl/crypto.h>
30 typedef struct SRP_gN_cache_st {
36 DEFINE_STACK_OF(SRP_gN_cache)
38 typedef struct SRP_user_pwd_st {
43 /* Not owned by us. */
50 SRP_user_pwd *SRP_user_pwd_new(void);
51 void SRP_user_pwd_free(SRP_user_pwd *user_pwd);
53 void SRP_user_pwd_set_gN(SRP_user_pwd *user_pwd, const BIGNUM *g, const BIGNUM *N);
54 int SRP_user_pwd_set1_ids(SRP_user_pwd *user_pwd, const char *id, const char *info);
55 int SRP_user_pwd_set0_sv(SRP_user_pwd *user_pwd, BIGNUM *s, BIGNUM *v);
57 DEFINE_STACK_OF(SRP_user_pwd)
59 typedef struct SRP_VBASE_st {
60 STACK_OF(SRP_user_pwd) *users_pwd;
61 STACK_OF(SRP_gN_cache) *gN_cache;
62 /* to simulate a user */
64 const BIGNUM *default_g;
65 const BIGNUM *default_N;
69 * Internal structure storing N and g pair
71 typedef struct SRP_gN_st {
77 DEFINE_STACK_OF(SRP_gN)
79 SRP_VBASE *SRP_VBASE_new(char *seed_key);
80 void SRP_VBASE_free(SRP_VBASE *vb);
81 int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file);
83 int SRP_VBASE_add0_user(SRP_VBASE *vb, SRP_user_pwd *user_pwd);
84 /* This method ignores the configured seed and fails for an unknown user. */
85 DEPRECATEDIN_1_1_0(SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username))
86 /* NOTE: unlike in SRP_VBASE_get_by_user, caller owns the returned pointer.*/
87 SRP_user_pwd *SRP_VBASE_get1_by_user(SRP_VBASE *vb, char *username);
89 char *SRP_create_verifier(const char *user, const char *pass, char **salt,
90 char **verifier, const char *N, const char *g);
91 int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
92 BIGNUM **verifier, const BIGNUM *N,
95 # define SRP_NO_ERROR 0
96 # define SRP_ERR_VBASE_INCOMPLETE_FILE 1
97 # define SRP_ERR_VBASE_BN_LIB 2
98 # define SRP_ERR_OPEN_FILE 3
99 # define SRP_ERR_MEMORY 4
101 # define DB_srptype 0
102 # define DB_srpverifier 1
103 # define DB_srpsalt 2
106 # define DB_srpinfo 5
110 # define DB_SRP_INDEX 'I'
111 # define DB_SRP_VALID 'V'
112 # define DB_SRP_REVOKED 'R'
113 # define DB_SRP_MODIF 'v'
116 char *SRP_check_known_gN_param(const BIGNUM *g, const BIGNUM *N);
117 SRP_gN *SRP_get_default_gN(const char *id);
119 /* server side .... */
120 BIGNUM *SRP_Calc_server_key(const BIGNUM *A, const BIGNUM *v, const BIGNUM *u,
121 const BIGNUM *b, const BIGNUM *N);
122 BIGNUM *SRP_Calc_B(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
124 int SRP_Verify_A_mod_N(const BIGNUM *A, const BIGNUM *N);
125 BIGNUM *SRP_Calc_u(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N);
127 /* client side .... */
128 BIGNUM *SRP_Calc_x(const BIGNUM *s, const char *user, const char *pass);
129 BIGNUM *SRP_Calc_A(const BIGNUM *a, const BIGNUM *N, const BIGNUM *g);
130 BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
131 const BIGNUM *x, const BIGNUM *a, const BIGNUM *u);
132 int SRP_Verify_B_mod_N(const BIGNUM *B, const BIGNUM *N);
134 # define SRP_MINIMAL_N 1024