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samba-mirror/lib/util/genrand.h
Volker Lendecke 0934134d2e lib: Streamline genrand.c includes
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-06-23 22:12:08 +02:00

45 lines
1.4 KiB
C

/*
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);