37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
/* some multiprecision utilities
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* Copyright (C) 1997 Angelos D. Keromytis.
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* Copyright (C) 1998-2001 D. Hugh Redelmeier.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* RCSID $Id: mp_defs.h,v 1.2 2006/01/06 11:40:45 as Exp $
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*/
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#ifndef _MP_DEFS_H
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#define _MP_DEFS_H
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#include <gmp.h>
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#include "defs.h"
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extern void n_to_mpz(MP_INT *mp, const u_char *nbytes, size_t nlen);
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extern chunk_t mpz_to_n(const MP_INT *mp, size_t bytes);
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/* var := mod(base ** exp, mod), ensuring var is mpz_inited */
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#define mpz_init_powm(flag, var, base, exp, mod) { \
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if (!(flag)) \
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mpz_init(&(var)); \
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(flag) = TRUE; \
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mpz_powm(&(var), &(base), &(exp), (mod)); \
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}
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#endif /* _MP_DEFS_H */
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