rngd_entsource.h

   1 /*
   2  * rngd_source.h -- Entropy source and conditioning
   3  *
   4  * Copyright (C) 2001 Philipp Rumpf
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA  02110-1335  USA
  19  */
  20
  21 #ifndef RNGD_ENTSOURCE__H
  22 #define RNGD_ENTSOURCE__H
  23
  24 #include "rng-tools-config.h"
  25
  26 #include <unistd.h>
  27 #include <stdint.h>
  28
  29 /* Logic and contexts */
  30 extern fips_ctx_t fipsctx;              /* Context for the FIPS tests */
  31 extern fips_ctx_t tpm_fipsctx;  /* Context for the tpm FIPS tests */
  32
  33 /*
  34  * Initialize entropy source and entropy conditioning
  35  *
  36  * sourcedev is the path to the entropy source
  37  */
  38 extern int init_entropy_source(struct rng *);
  39 extern int init_drng_entropy_source(struct rng *);
  40 extern int init_tpm_entropy_source(struct rng *);
  41
  42 /* Read data from the entropy source */
  43 extern int xread(void *buf, size_t size, struct rng *ent_src);
  44 extern int xread_drng(void *buf, size_t size, struct rng *ent_src);
  45 extern int xread_tpm(void *buf, size_t size, struct rng *ent_src);
  46
  47 #endif /* RNGD_ENTSOURCE__H */