lib/util/genrand.h

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Functions to create reasonable random numbers for crypto use.
   5
   6    Copyright (C) Jeremy Allison 2001
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 /**
  23  * Thread and fork safe random number generator for temporary keys.
  24  */
  25 void generate_random_buffer(uint8_t *out, int len);
  26
  27 /**
  28  * @brief Generate random values for key buffers (e.g. session keys)
  29  *
  30  * @param[in]  out  A pointer to the buffer to fill with random data.
  31  *
  32  * @param[in]  len  The size of the buffer to fill.
  33  */
  34 void generate_secret_buffer(uint8_t *out, int len);
  35
  36 /**
  37  * @brief Generate random values for a nonce buffer.
  38  *
  39  * This is also known as initialization vector.
  40  *
  41  * @param[in]  out  A pointer to the buffer to fill with random data.
  42  *
  43  * @param[in]  len  The size of the buffer to fill.
  44  */
  45 void generate_nonce_buffer(uint8_t *out, int len);