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/* Bob Jenkins's cryptographic random number generator, ISAAC.
Copyright (C) 1999-2005, 2009-2010 Free Software Foundation, Inc.
Copyright (C) 1997, 1998, 1999 Colin Plumb.
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/>.
Written by Colin Plumb. */
#ifndef RAND_ISAAC_H
# define RAND_ISAAC_H
# include <stddef.h>
# include <stdint.h>
/* Size of the state tables to use. ISAAC_LOG should be at least 3,
and smaller values give less security. */
# define ISAAC_LOG 8
# define ISAAC_WORDS (1 << ISAAC_LOG)
# define ISAAC_BYTES (ISAAC_WORDS * sizeof (uint32_t))
/* RNG state variables. The members of this structure are private. */
struct isaac_state
{
uint32_t mm[ISAAC_WORDS]; /* Main state array */
uint32_t iv[8]; /* Seeding initial vector */
uint32_t a, b, c; /* Extra index variables */
};
void isaac_seed (struct isaac_state *, int, size_t);
void isaac_refill (struct isaac_state *, uint32_t[ISAAC_WORDS]);
#endif
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