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4c106e20ef
This includes the newly added *_ex() variants that take a libctx/property query string. Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/11410)
89 lines
3.4 KiB
Plaintext
89 lines
3.4 KiB
Plaintext
=pod
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=head1 NAME
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SRP_Calc_server_key,
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SRP_Calc_A,
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SRP_Calc_B_ex,
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SRP_Calc_B,
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SRP_Calc_u_ex,
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SRP_Calc_u,
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SRP_Calc_x_ex,
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SRP_Calc_x,
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SRP_Calc_client_key_ex,
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SRP_Calc_client_key
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- SRP authentication primitives
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=head1 SYNOPSIS
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#include <openssl/srp.h>
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/* server side .... */
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BIGNUM *SRP_Calc_server_key(const BIGNUM *A, const BIGNUM *v, const BIGNUM *u,
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const BIGNUM *b, const BIGNUM *N);
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BIGNUM *SRP_Calc_B_ex(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
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const BIGNUM *v, OPENSSL_CTX *libctx, const char *propq);
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BIGNUM *SRP_Calc_B(const BIGNUM *b, const BIGNUM *N, const BIGNUM *g,
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const BIGNUM *v);
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BIGNUM *SRP_Calc_u_ex(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N,
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OPENSSL_CTX *libctx, const char *propq);
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BIGNUM *SRP_Calc_u(const BIGNUM *A, const BIGNUM *B, const BIGNUM *N);
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/* client side .... */
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BIGNUM *SRP_Calc_client_key_ex(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
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const BIGNUM *x, const BIGNUM *a, const BIGNUM *u,
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OPENSSL_CTX *libctx, const char *propq);
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BIGNUM *SRP_Calc_client_key(const BIGNUM *N, const BIGNUM *B, const BIGNUM *g,
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const BIGNUM *x, const BIGNUM *a, const BIGNUM *u);
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BIGNUM *SRP_Calc_x_ex(const BIGNUM *s, const char *user, const char *pass,
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OPENSSL_CTX *libctx, const char *propq);
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BIGNUM *SRP_Calc_x(const BIGNUM *s, const char *user, const char *pass);
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BIGNUM *SRP_Calc_A(const BIGNUM *a, const BIGNUM *N, const BIGNUM *g);
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=head1 DESCRIPTION
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The SRP functions described on this page are used to calculate various
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parameters and keys used by SRP as defined in RFC2945. The server key and I<B>
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and I<u> parameters are used on the server side and are calculated via
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SRP_Calc_server_key(), SRP_Calc_B_ex(), SRP_Calc_B(), SRP_Calc_u_ex() and
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SRP_Calc_u(). The client key and B<x> and B<A> parameters are used on the
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client side and are calculated via the functions SRP_Calc_client_key_ex(),
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SRP_Calc_client_key(), SRP_Calc_x_ex(), SRP_Calc_x() and SRP_Calc_A(). See
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RFC2945 for a detailed description of their usage and the meaning of the various
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BIGNUM parameters to these functions.
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Most of these functions come in two forms. Those that take a I<libctx> and
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I<propq> parameter, and those that don't. Any cryptogrpahic functions that
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are fetched and used during the calculation use the provided I<libctx> and
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I<propq>. See L<provider(7)/Fetching algorithms> for more details. The variants
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that do not take a I<libctx> and I<propq> parameter use the default library
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context and property query string. The SRP_Calc_server_key() and SRP_Calc_A()
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functions do not have a form that takes I<libctx> or I<propq> parameters because
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they do not need to fetch any cryptographic algorithms.
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=head1 RETURN VALUES
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All these functions return the calculated key or parameter, or NULL on error.
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=head1 SEE ALSO
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L<openssl-srp(1)>,
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L<SRP_VBASE_new(3)>,
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L<SRP_user_pwd_new(3)>
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=head1 HISTORY
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These functions were added in OpenSSL 1.0.1.
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=head1 COPYRIGHT
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Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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