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45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* Bob Jenkins's cryptographic random number generator, ISAAC.
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Copyright (C) 1999-2005 Free Software Foundation, Inc.
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Copyright (C) 1997, 1998, 1999 Colin Plumb.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software Foundation,
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Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Written by Colin Plumb. */
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#ifndef RAND_ISAAC_H
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# define RAND_ISAAC_H
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# include <stdint.h>
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/* Size of the state tables to use. ISAAC_LOG should be at least 3,
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and smaller values give less security. */
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# define ISAAC_LOG 8
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# define ISAAC_WORDS (1 << ISAAC_LOG)
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# define ISAAC_BYTES (ISAAC_WORDS * sizeof (uint32_t))
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/* RNG state variables. The members of this structure are private. */
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struct isaac_state
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{
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uint32_t mm[ISAAC_WORDS]; /* Main state array */
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uint32_t iv[8]; /* Seeding initial vector */
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uint32_t a, b, c; /* Extra index variables */
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};
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void isaac_seed (struct isaac_state *);
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void isaac_refill (struct isaac_state *, uint32_t[ISAAC_WORDS]);
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#endif
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