1.\" $OpenBSD: SSL_CTX_set_tmp_rsa_callback.3,v 1.8 2018/03/27 17:35:50 schwarze Exp $ 2.\" OpenSSL 0b30fc90 Dec 19 15:23:05 2013 -0500 3.\" 4.\" This file was written by Lutz Jaenicke <jaenicke@openssl.org>. 5.\" Copyright (c) 2001, 2006, 2013 The OpenSSL Project. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 14.\" 2. Redistributions in binary form must reproduce the above copyright 15.\" notice, this list of conditions and the following disclaimer in 16.\" the documentation and/or other materials provided with the 17.\" distribution. 18.\" 19.\" 3. All advertising materials mentioning features or use of this 20.\" software must display the following acknowledgment: 21.\" "This product includes software developed by the OpenSSL Project 22.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)" 23.\" 24.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 25.\" endorse or promote products derived from this software without 26.\" prior written permission. For written permission, please contact 27.\" openssl-core@openssl.org. 28.\" 29.\" 5. Products derived from this software may not be called "OpenSSL" 30.\" nor may "OpenSSL" appear in their names without prior written 31.\" permission of the OpenSSL Project. 32.\" 33.\" 6. Redistributions of any form whatsoever must retain the following 34.\" acknowledgment: 35.\" "This product includes software developed by the OpenSSL Project 36.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)" 37.\" 38.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 39.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 40.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 41.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 42.\" ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 43.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 44.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 45.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 47.\" STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 48.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 49.\" OF THE POSSIBILITY OF SUCH DAMAGE. 50.\" 51.Dd $Mdocdate: March 27 2018 $ 52.Dt SSL_CTX_SET_TMP_RSA_CALLBACK 3 53.Os 54.Sh NAME 55.Nm SSL_CTX_set_tmp_rsa_callback , 56.Nm SSL_CTX_set_tmp_rsa , 57.Nm SSL_CTX_need_tmp_RSA , 58.Nm SSL_set_tmp_rsa_callback , 59.Nm SSL_set_tmp_rsa , 60.Nm SSL_need_tmp_RSA 61.Nd handle RSA keys for ephemeral key exchange 62.Sh SYNOPSIS 63.In openssl/ssl.h 64.Ft void 65.Fo SSL_CTX_set_tmp_rsa_callback 66.Fa "SSL_CTX *ctx" 67.Fa "RSA *(*tmp_rsa_callback)(SSL *ssl, int is_export, int keylength)" 68.Fc 69.Ft long 70.Fn SSL_CTX_set_tmp_rsa "SSL_CTX *ctx" "RSA *rsa" 71.Ft long 72.Fn SSL_CTX_need_tmp_RSA "SSL_CTX *ctx" 73.Ft void 74.Fo SSL_set_tmp_rsa_callback 75.Fa "SSL_CTX *ctx" 76.Fa "RSA *(*tmp_rsa_callback)(SSL *ssl, int is_export, int keylength)" 77.Fc 78.Ft long 79.Fn SSL_set_tmp_rsa "SSL *ssl" "RSA *rsa" 80.Ft long 81.Fn SSL_need_tmp_RSA "SSL *ssl" 82.Sh DESCRIPTION 83Since they mattered only for deliberately insecure RSA authentication 84mandated by historical U.S. export restrictions, these functions 85are all deprecated and have no effect except that 86.Fn SSL_CTX_set_tmp_rsa_callback , 87.Fn SSL_CTX_set_tmp_rsa , 88.Fn SSL_set_tmp_rsa_callback , 89and 90.Fn SSL_set_tmp_rsa 91issue error messages when called. 92.Sh RETURN VALUES 93These functions always return 0, indicating failure. 94.Sh SEE ALSO 95.Xr ssl 3 , 96.Xr SSL_CTX_set_cipher_list 3 , 97.Xr SSL_CTX_set_options 3 , 98.Xr SSL_CTX_set_tmp_dh_callback 3 , 99.Xr SSL_new 3 , 100.Xr SSL_set_tmp_ecdh 3 101.Sh HISTORY 102.Fn SSL_CTX_set_tmp_rsa_callback , 103.Fn SSL_CTX_set_tmp_rsa , 104and 105.Fn SSL_CTX_need_tmp_RSA 106first appeared in SSLeay 0.8.0 and have been available since 107.Ox 2.4 . 108.Pp 109.Fn SSL_set_tmp_rsa_callback 110.Fn SSL_set_tmp_rsa , 111and 112.Fn SSL_need_tmp_RSA 113first appeared in OpenSSL 0.9.2b and have been available since 114.Ox 2.6 . 115