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https://git.libssh.org/projects/libssh.git
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d57a383d43
Signed-off-by: Norbert Pocs <npocs@redhat.com> Reviewed-by: Jakub Jelen <jjelen@redhat.com>
65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
/*
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* This file is part of the SSH Library
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*
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* Copyright (c) 2009 by Aris Adamantiadis
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*
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* The SSH Library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version.
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*
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* The SSH Library is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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* License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with the SSH Library; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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* MA 02111-1307, USA.
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*/
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#include "config.h"
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#include "libssh/crypto.h"
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#include <openssl/rand.h>
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/**
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* @addtogroup libssh_misc
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*
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* @{
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*/
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/**
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* @brief Get random bytes
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*
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* Make sure to always check the return code of this function!
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*
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* @param[in] where The buffer to fill with random bytes
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*
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* @param[in] len The size of the buffer to fill.
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*
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* @param[in] strong Use a strong or private RNG source.
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*
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* @return 1 on success, 0 on error.
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*/
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int
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ssh_get_random(void *where, int len, int strong)
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{
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#ifdef HAVE_OPENSSL_RAND_PRIV_BYTES
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if (strong) {
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/* Returns -1 when not supported, 0 on error, 1 on success */
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return !!RAND_priv_bytes(where, len);
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}
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#else
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(void)strong;
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#endif /* HAVE_RAND_PRIV_BYTES */
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/* Returns -1 when not supported, 0 on error, 1 on success */
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return !!RAND_bytes(where, len);
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}
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/**
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* @}
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*/
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