/usr/include/samba-4.0/util/genrand.h is in samba-dev 2:4.3.8+dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | /*
Unix SMB/CIFS implementation.
Functions to create reasonable random numbers for crypto use.
Copyright (C) Jeremy Allison 2001
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
Copy any user given reseed data.
**/
void set_rand_reseed_callback(void (*fn)(void *, int *), void *userdata);
/**
* Tell the random number generator it needs to reseed.
*/
void set_need_random_reseed(void);
/**
Interface to the (hopefully) good crypto random number generator.
Will use our internal PRNG if more than 40 bytes of random generation
has been requested, otherwise tries to read from /dev/random
**/
void generate_random_buffer(uint8_t *out, int len);
/**
Interface to the (hopefully) good crypto random number generator.
Will always use /dev/urandom if available.
**/
void generate_secret_buffer(uint8_t *out, int len);
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