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/*
* Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
* Copyright (c) 2004, EdelKey Project. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*
* Originally written by Christophe Renou and Peter Sylvester,
* for the EdelKey project.
*/
#ifndef HEADER_SRP_H
# define HEADER_SRP_H
#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_SRP
# include <stdio.h>
# include <string.h>
# include <openssl/safestack.h>
# include <openssl/bn.h>
# include <openssl/crypto.h>
# ifdef __cplusplus
extern "C" {
# endif
typedef struct SRP_gN_cache_st {
char *b64_bn;
BIGNUM *bn;
} SRP_gN_cache;
DEFINE_STACK_OF(SRP_gN_cache)
typedef struct SRP_user_pwd_st {
/* Owned by us. */
char *id;
BIGNUM *s;
BIGNUM *v;
/* Not owned by us. */
const BIGNUM *g;
const BIGNUM *N;
/* Owned by us. */
char *info;
} SRP_user_pwd;
void SRP_user_pwd_free(SRP_user_pwd *user_pwd);
DEFINE_STACK_OF(SRP_user_pwd)
typedef struct SRP_VBASE_st {
STACK_OF(SRP_user_pwd) *users_pwd;
STACK_OF(SRP_gN_cache) *gN_cache;
/* to simulate a user */
char *seed_key;
const BIGNUM *default_g;
const BIGNUM *default_N;
} SRP_VBASE;
/*
* Internal structure storing N and g pair
*/
typedef struct SRP_gN_st {
char *id;
const BIGNUM *g;
const BIGNUM *N;
} SRP_gN;
DEFINE_STACK_OF(SRP_gN)
SRP_VBASE *SRP_VBASE_new(char *seed_key);
void SRP_VBASE_free(SRP_VBASE *vb);
int SRP_VBASE_init(SRP_VBASE *vb, char *verifier_file);
/* This method ignores the configured seed and fails for an unknown user. */
DEPRECATEDIN_1_1_0(SRP_user_pwd *SRP_VBASE_get_by_user(SRP_VBASE *vb, char *username))
/* NOTE: unlike in SRP_VBASE_get_by_user, caller owns the returned pointer.*/
SRP_user_pwd *SRP_VBASE_get1_by_user(SRP_VBASE *vb, char *username);
char *SRP_create_verifier(const char *user, const char *pass, char **salt,
char **verifier, const char *N, const char *g);
int SRP_create_verifier_BN(const char *user, const char *pass, BIGNUM **salt,
BIGNUM **verifier, const BIGNUM *N,
const BIGNUM *g);
# define SRP_NO_ERROR 0
# define SRP_ERR_VBASE_INCOMPLETE_FILE 1
# define SRP_ERR_VBASE_BN_LIB 2
# define SRP_ERR_OPEN_FILE 3
# define SRP_ERR_MEMORY 4
# define DB_srptype 0
# define DB_srpverifier 1
# define DB_srpsalt 2
# define DB_srpid 3
# define DB_srpgN 4
# define DB_srpinfo 5
# undef DB_NUMBER
# define DB_NUMBER 6
# define DB_SRP_INDEX 'I'
# define DB_SRP_VALID 'V'
# define DB_SRP_REVOKED 'R'
# define DB_SRP_MODIF 'v'
/* see srp.c */
char *SRP_check_known_gN_param(const BIGNUM *g, const BIGNUM *N);
SRP_gN *SRP_get_default_gN(const char *id);
/* server side .... */
BIGNUM *SRP_Calc_server_key(const BIGNUM *A, const BIGNUM *v, const BIGNUM *u,
const BIGNUM *b, const BIGNUM *N);
BIGNUM *SRP_Calc_B(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
const BIGNUM *v);
int SRP_Verify_A_mod_N(const BIGNUM *A, const BIGNUM *N);
BIGNUM *SRP_Calc_u(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N);
/* client side .... */
BIGNUM *SRP_Calc_x(const BIGNUM *s, const char *user, const char *pass);
BIGNUM *SRP_Calc_A(const BIGNUM *a, const BIGNUM *N, const BIGNUM *g);
BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
const BIGNUM *x, const BIGNUM *a, const BIGNUM *u);
int SRP_Verify_B_mod_N(const BIGNUM *B, const BIGNUM *N);
# define SRP_MINIMAL_N 1024
# ifdef __cplusplus
}
# endif
# endif
#endif
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