1=pod 2 3=head1 NAME 4 5SRP_Calc_server_key, 6SRP_Calc_A, 7SRP_Calc_B_ex, 8SRP_Calc_B, 9SRP_Calc_u_ex, 10SRP_Calc_u, 11SRP_Calc_x_ex, 12SRP_Calc_x, 13SRP_Calc_client_key_ex, 14SRP_Calc_client_key 15- SRP authentication primitives 16 17=head1 SYNOPSIS 18 19 #include <openssl/srp.h> 20 21The following functions have been deprecated since OpenSSL 3.0, and can be 22hidden entirely by defining B<OPENSSL_API_COMPAT> with a suitable version value, 23see L<openssl_user_macros(7)>: 24 25 /* server side .... */ 26 BIGNUM *SRP_Calc_server_key(const BIGNUM *A, const BIGNUM *v, const BIGNUM *u, 27 const BIGNUM *b, const BIGNUM *N); 28 BIGNUM *SRP_Calc_B_ex(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g, 29 const BIGNUM *v, OSSL_LIB_CTX *libctx, const char *propq); 30 BIGNUM *SRP_Calc_B(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g, 31 const BIGNUM *v); 32 33 BIGNUM *SRP_Calc_u_ex(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N, 34 OSSL_LIB_CTX *libctx, const char *propq); 35 BIGNUM *SRP_Calc_u(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N); 36 37 /* client side .... */ 38 BIGNUM *SRP_Calc_client_key_ex(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g, 39 const BIGNUM *x, const BIGNUM *a, const BIGNUM *u, 40 OSSL_LIB_CTX *libctx, const char *propq); 41 BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g, 42 const BIGNUM *x, const BIGNUM *a, const BIGNUM *u); 43 BIGNUM *SRP_Calc_x_ex(const BIGNUM *s, const char *user, const char *pass, 44 OSSL_LIB_CTX *libctx, const char *propq); 45 BIGNUM *SRP_Calc_x(const BIGNUM *s, const char *user, const char *pass); 46 BIGNUM *SRP_Calc_A(const BIGNUM *a, const BIGNUM *N, const BIGNUM *g); 47 48=head1 DESCRIPTION 49 50All of the functions described on this page are deprecated. There are no 51available replacement functions at this time. 52 53The SRP functions described on this page are used to calculate various 54parameters and keys used by SRP as defined in RFC2945. The server key and I<B> 55and I<u> parameters are used on the server side and are calculated via 56SRP_Calc_server_key(), SRP_Calc_B_ex(), SRP_Calc_B(), SRP_Calc_u_ex() and 57SRP_Calc_u(). The client key and B<x> and B<A> parameters are used on the 58client side and are calculated via the functions SRP_Calc_client_key_ex(), 59SRP_Calc_client_key(), SRP_Calc_x_ex(), SRP_Calc_x() and SRP_Calc_A(). See 60RFC2945 for a detailed description of their usage and the meaning of the various 61BIGNUM parameters to these functions. 62 63Most of these functions come in two forms. Those that take a I<libctx> and 64I<propq> parameter, and those that don't. Any cryptogrpahic functions that 65are fetched and used during the calculation use the provided I<libctx> and 66I<propq>. See L<crypto(7)/ALGORITHM FETCHING> for more details. The variants 67that do not take a I<libctx> and I<propq> parameter use the default library 68context and property query string. The SRP_Calc_server_key() and SRP_Calc_A() 69functions do not have a form that takes I<libctx> or I<propq> parameters because 70they do not need to fetch any cryptographic algorithms. 71 72=head1 RETURN VALUES 73 74All these functions return the calculated key or parameter, or NULL on error. 75 76=head1 SEE ALSO 77 78L<openssl-srp(1)>, 79L<SRP_VBASE_new(3)>, 80L<SRP_user_pwd_new(3)> 81 82=head1 HISTORY 83 84SRP_Calc_B_ex, SRP_Calc_u_ex, SRP_Calc_client_key_ex and SRP_Calc_x_ex were 85introduced in OpenSSL 3.0. 86 87All of the other functions were added in OpenSSL 1.0.1. 88 89All of these functions were deprecated in OpenSSL 3.0. 90 91=head1 COPYRIGHT 92 93Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. 94 95Licensed under the Apache License 2.0 (the "License"). You may not use 96this file except in compliance with the License. You can obtain a copy 97in the file LICENSE in the source distribution or at 98L<https://www.openssl.org/source/license.html>. 99 100=cut 101
