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src/getrandom_crypto.c
64 строки
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Norbert Pocs
getrandom_crypto.c: Add function to the documentation
29 сен 2022, 12:12
29 сен 2022, 12:12
d57a383
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/* * This file is part of the SSH Library * * Copyright (c) 2009 by Aris Adamantiadis * * The SSH Library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or (at your * option) any later version. * * The SSH Library is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public * License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with the SSH Library; see the file COPYING. If not, write to * the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #include "config.h" #include "libssh/crypto.h" #include <openssl/rand.h> /** * @addtogroup libssh_misc * * @{ */ /** * @brief Get random bytes * * Make sure to always check the return code of this function! * * @param[in] where The buffer to fill with random bytes * * @param[in] len The size of the buffer to fill. * * @param[in] strong Use a strong or private RNG source. * * @return 1 on success, 0 on error. */ int ssh_get_random(void *where, int len, int strong) { #ifdef HAVE_OPENSSL_RAND_PRIV_BYTES if (strong) { /* Returns -1 when not supported, 0 on error, 1 on success */ return !!RAND_priv_bytes(where, len); } #else (void)strong; #endif /* HAVE_RAND_PRIV_BYTES */ /* Returns -1 when not supported, 0 on error, 1 on success */ return !!RAND_bytes(where, len); } /** * @} */