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gecko/security/nss/lib/freebl/mpi/mpi.h
Kai Engert 2da188f9a8 Bug 473837, land NSS_3_12_3_BETA2 
r=wtc
2009-01-21 04:43:31 +01:00

341 lines
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C
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/*
* mpi.h
*
* Arbitrary precision integer arithmetic library
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is the MPI Arbitrary Precision Integer Arithmetic library.
*
* The Initial Developer of the Original Code is
* Michael J. Fromberger.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Netscape Communications Corporation
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/* $Id: mpi.h,v 1.23 2008/12/04 18:16:34 rrelyea%redhat.com Exp $ */
#ifndef _H_MPI_
#define _H_MPI_
#include "mpi-config.h"
#if MP_DEBUG
#undef MP_IOFUNC
#define MP_IOFUNC 1
#endif
#if MP_IOFUNC
#include <stdio.h>
#include <ctype.h>
#endif
#include <limits.h>
#if defined(BSDI)
#undef ULLONG_MAX
#endif
#if defined( macintosh )
#include <Types.h>
#elif defined( _WIN32_WCE)
/* #include <sys/types.h> What do we need here ?? */
#else
#include <sys/types.h>
#endif
#define MP_NEG 1
#define MP_ZPOS 0
#define MP_OKAY 0 /* no error, all is well */
#define MP_YES 0 /* yes (boolean result) */
#define MP_NO -1 /* no (boolean result) */
#define MP_MEM -2 /* out of memory */
#define MP_RANGE -3 /* argument out of range */
#define MP_BADARG -4 /* invalid parameter */
#define MP_UNDEF -5 /* answer is undefined */
#define MP_LAST_CODE MP_UNDEF
typedef unsigned int mp_sign;
typedef unsigned int mp_size;
typedef int mp_err;
#define MP_32BIT_MAX 4294967295U
#if !defined(ULONG_MAX)
#error "ULONG_MAX not defined"
#elif !defined(UINT_MAX)
#error "UINT_MAX not defined"
#elif !defined(USHRT_MAX)
#error "USHRT_MAX not defined"
#endif
#if defined(ULONG_LONG_MAX) /* GCC, HPUX */
#define MP_ULONG_LONG_MAX ULONG_LONG_MAX
#elif defined(ULLONG_MAX) /* Solaris */
#define MP_ULONG_LONG_MAX ULLONG_MAX
/* MP_ULONG_LONG_MAX was defined to be ULLONG_MAX */
#elif defined(ULONGLONG_MAX) /* IRIX, AIX */
#define MP_ULONG_LONG_MAX ULONGLONG_MAX
#endif
/* We only use unsigned long for mp_digit iff long is more than 32 bits. */
#if !defined(MP_USE_UINT_DIGIT) && ULONG_MAX > MP_32BIT_MAX
typedef unsigned long mp_digit;
#define MP_DIGIT_MAX ULONG_MAX
#define MP_DIGIT_FMT "%016lX" /* printf() format for 1 digit */
#define MP_HALF_DIGIT_MAX UINT_MAX
#undef MP_NO_MP_WORD
#define MP_NO_MP_WORD 1
#undef MP_USE_LONG_DIGIT
#define MP_USE_LONG_DIGIT 1
#undef MP_USE_LONG_LONG_DIGIT
#elif !defined(MP_USE_UINT_DIGIT) && defined(MP_ULONG_LONG_MAX)
typedef unsigned long long mp_digit;
#define MP_DIGIT_MAX MP_ULONG_LONG_MAX
#define MP_DIGIT_FMT "%016llX" /* printf() format for 1 digit */
#define MP_HALF_DIGIT_MAX UINT_MAX
#undef MP_NO_MP_WORD
#define MP_NO_MP_WORD 1
#undef MP_USE_LONG_LONG_DIGIT
#define MP_USE_LONG_LONG_DIGIT 1
#undef MP_USE_LONG_DIGIT
#else
typedef unsigned int mp_digit;
#define MP_DIGIT_MAX UINT_MAX
#define MP_DIGIT_FMT "%08X" /* printf() format for 1 digit */
#define MP_HALF_DIGIT_MAX USHRT_MAX
#undef MP_USE_UINT_DIGIT
#define MP_USE_UINT_DIGIT 1
#undef MP_USE_LONG_LONG_DIGIT
#undef MP_USE_LONG_DIGIT
#endif
#if !defined(MP_NO_MP_WORD)
#if defined(MP_USE_UINT_DIGIT) && \
(defined(MP_ULONG_LONG_MAX) || (ULONG_MAX > UINT_MAX))
#if (ULONG_MAX > UINT_MAX)
typedef unsigned long mp_word;
typedef long mp_sword;
#define MP_WORD_MAX ULONG_MAX
#else
typedef unsigned long long mp_word;
typedef long long mp_sword;
#define MP_WORD_MAX MP_ULONG_LONG_MAX
#endif
#else
#define MP_NO_MP_WORD 1
#endif
#endif /* !defined(MP_NO_MP_WORD) */
#if !defined(MP_WORD_MAX) && defined(MP_DEFINE_SMALL_WORD)
typedef unsigned int mp_word;
typedef int mp_sword;
#define MP_WORD_MAX UINT_MAX
#endif
#define MP_DIGIT_BIT (CHAR_BIT*sizeof(mp_digit))
#define MP_WORD_BIT (CHAR_BIT*sizeof(mp_word))
#define MP_RADIX (1+(mp_word)MP_DIGIT_MAX)
#define MP_HALF_DIGIT_BIT (MP_DIGIT_BIT/2)
#define MP_HALF_RADIX (1+(mp_digit)MP_HALF_DIGIT_MAX)
/* MP_HALF_RADIX really ought to be called MP_SQRT_RADIX, but it's named
** MP_HALF_RADIX because it's the radix for MP_HALF_DIGITs, and it's
** consistent with the other _HALF_ names.
*/
/* Macros for accessing the mp_int internals */
#define MP_SIGN(MP) ((MP)->sign)
#define MP_USED(MP) ((MP)->used)
#define MP_ALLOC(MP) ((MP)->alloc)
#define MP_DIGITS(MP) ((MP)->dp)
#define MP_DIGIT(MP,N) (MP)->dp[(N)]
/* This defines the maximum I/O base (minimum is 2) */
#define MP_MAX_RADIX 64
typedef struct {
mp_sign sign; /* sign of this quantity */
mp_size alloc; /* how many digits allocated */
mp_size used; /* how many digits used */
mp_digit *dp; /* the digits themselves */
} mp_int;
/* Default precision */
mp_size mp_get_prec(void);
void mp_set_prec(mp_size prec);
/* Memory management */
mp_err mp_init(mp_int *mp);
mp_err mp_init_size(mp_int *mp, mp_size prec);
mp_err mp_init_copy(mp_int *mp, const mp_int *from);
mp_err mp_copy(const mp_int *from, mp_int *to);
void mp_exch(mp_int *mp1, mp_int *mp2);
void mp_clear(mp_int *mp);
void mp_zero(mp_int *mp);
void mp_set(mp_int *mp, mp_digit d);
mp_err mp_set_int(mp_int *mp, long z);
#define mp_set_long(mp,z) mp_set_int(mp,z)
mp_err mp_set_ulong(mp_int *mp, unsigned long z);
/* Single digit arithmetic */
mp_err mp_add_d(const mp_int *a, mp_digit d, mp_int *b);
mp_err mp_sub_d(const mp_int *a, mp_digit d, mp_int *b);
mp_err mp_mul_d(const mp_int *a, mp_digit d, mp_int *b);
mp_err mp_mul_2(const mp_int *a, mp_int *c);
mp_err mp_div_d(const mp_int *a, mp_digit d, mp_int *q, mp_digit *r);
mp_err mp_div_2(const mp_int *a, mp_int *c);
mp_err mp_expt_d(const mp_int *a, mp_digit d, mp_int *c);
/* Sign manipulations */
mp_err mp_abs(const mp_int *a, mp_int *b);
mp_err mp_neg(const mp_int *a, mp_int *b);
/* Full arithmetic */
mp_err mp_add(const mp_int *a, const mp_int *b, mp_int *c);
mp_err mp_sub(const mp_int *a, const mp_int *b, mp_int *c);
mp_err mp_mul(const mp_int *a, const mp_int *b, mp_int *c);
#if MP_SQUARE
mp_err mp_sqr(const mp_int *a, mp_int *b);
#else
#define mp_sqr(a, b) mp_mul(a, a, b)
#endif
mp_err mp_div(const mp_int *a, const mp_int *b, mp_int *q, mp_int *r);
mp_err mp_div_2d(const mp_int *a, mp_digit d, mp_int *q, mp_int *r);
mp_err mp_expt(mp_int *a, mp_int *b, mp_int *c);
mp_err mp_2expt(mp_int *a, mp_digit k);
mp_err mp_sqrt(const mp_int *a, mp_int *b);
/* Modular arithmetic */
#if MP_MODARITH
mp_err mp_mod(const mp_int *a, const mp_int *m, mp_int *c);
mp_err mp_mod_d(const mp_int *a, mp_digit d, mp_digit *c);
mp_err mp_addmod(const mp_int *a, const mp_int *b, const mp_int *m, mp_int *c);
mp_err mp_submod(const mp_int *a, const mp_int *b, const mp_int *m, mp_int *c);
mp_err mp_mulmod(const mp_int *a, const mp_int *b, const mp_int *m, mp_int *c);
#if MP_SQUARE
mp_err mp_sqrmod(const mp_int *a, const mp_int *m, mp_int *c);
#else
#define mp_sqrmod(a, m, c) mp_mulmod(a, a, m, c)
#endif
mp_err mp_exptmod(const mp_int *a, const mp_int *b, const mp_int *m, mp_int *c);
mp_err mp_exptmod_d(const mp_int *a, mp_digit d, const mp_int *m, mp_int *c);
#endif /* MP_MODARITH */
/* Comparisons */
int mp_cmp_z(const mp_int *a);
int mp_cmp_d(const mp_int *a, mp_digit d);
int mp_cmp(const mp_int *a, const mp_int *b);
int mp_cmp_mag(mp_int *a, mp_int *b);
int mp_cmp_int(const mp_int *a, long z);
int mp_isodd(const mp_int *a);
int mp_iseven(const mp_int *a);
/* Number theoretic */
#if MP_NUMTH
mp_err mp_gcd(mp_int *a, mp_int *b, mp_int *c);
mp_err mp_lcm(mp_int *a, mp_int *b, mp_int *c);
mp_err mp_xgcd(const mp_int *a, const mp_int *b, mp_int *g, mp_int *x, mp_int *y);
mp_err mp_invmod(const mp_int *a, const mp_int *m, mp_int *c);
mp_err mp_invmod_xgcd(const mp_int *a, const mp_int *m, mp_int *c);
#endif /* end MP_NUMTH */
/* Input and output */
#if MP_IOFUNC
void mp_print(mp_int *mp, FILE *ofp);
#endif /* end MP_IOFUNC */
/* Base conversion */
mp_err mp_read_raw(mp_int *mp, char *str, int len);
int mp_raw_size(mp_int *mp);
mp_err mp_toraw(mp_int *mp, char *str);
mp_err mp_read_radix(mp_int *mp, const char *str, int radix);
mp_err mp_read_variable_radix(mp_int *a, const char * str, int default_radix);
int mp_radix_size(mp_int *mp, int radix);
mp_err mp_toradix(mp_int *mp, char *str, int radix);
int mp_tovalue(char ch, int r);
#define mp_tobinary(M, S) mp_toradix((M), (S), 2)
#define mp_tooctal(M, S) mp_toradix((M), (S), 8)
#define mp_todecimal(M, S) mp_toradix((M), (S), 10)
#define mp_tohex(M, S) mp_toradix((M), (S), 16)
/* Error strings */
const char *mp_strerror(mp_err ec);
/* Octet string conversion functions */
mp_err mp_read_unsigned_octets(mp_int *mp, const unsigned char *str, mp_size len);
int mp_unsigned_octet_size(const mp_int *mp);
mp_err mp_to_unsigned_octets(const mp_int *mp, unsigned char *str, mp_size maxlen);
mp_err mp_to_signed_octets(const mp_int *mp, unsigned char *str, mp_size maxlen);
mp_err mp_to_fixlen_octets(const mp_int *mp, unsigned char *str, mp_size len);
/* Miscellaneous */
mp_size mp_trailing_zeros(const mp_int *mp);
void freebl_cpuid(unsigned long op, unsigned long *eax,
unsigned long *ebx, unsigned long *ecx,
unsigned long *edx);
#define MP_CHECKOK(x) if (MP_OKAY > (res = (x))) goto CLEANUP
#define MP_CHECKERR(x) if (MP_OKAY > (res = (x))) goto CLEANUP
#if defined(MP_API_COMPATIBLE)
#define NEG MP_NEG
#define ZPOS MP_ZPOS
#define DIGIT_MAX MP_DIGIT_MAX
#define DIGIT_BIT MP_DIGIT_BIT
#define DIGIT_FMT MP_DIGIT_FMT
#define RADIX MP_RADIX
#define MAX_RADIX MP_MAX_RADIX
#define SIGN(MP) MP_SIGN(MP)
#define USED(MP) MP_USED(MP)
#define ALLOC(MP) MP_ALLOC(MP)
#define DIGITS(MP) MP_DIGITS(MP)
#define DIGIT(MP,N) MP_DIGIT(MP,N)
#if MP_ARGCHK == 1
#define ARGCHK(X,Y) {if(!(X)){return (Y);}}
#elif MP_ARGCHK == 2
#include <assert.h>
#define ARGCHK(X,Y) assert(X)
#else
#define ARGCHK(X,Y) /* */
#endif
#endif /* defined MP_API_COMPATIBLE */
#endif /* end _H_MPI_ */
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