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83bff65b84d6f76b69d44a115469da2dd68decae
mars-matrixssl/crypto/math/pstm.h
Janne Johansson 83bff65b84 MatrixSSL 3.9.5
2017-12-13 16:23:52 +02:00

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/**
* @file pstm.h
* @version $Format:%h%d$
*
* multiple-precision integer library.
*/
/*
* Copyright (c) 2013-2017 INSIDE Secure Corporation
* Copyright (c) PeerSec Networks, 2002-2011
* All Rights Reserved
*
* The latest version of this code is available at http://www.matrixssl.org
*
* This software is open source; 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 2 of the License, or
* (at your option) any later version.
*
* This General Public License does NOT permit incorporating this software
* into proprietary programs. If you are unable to comply with the GPL, a
* commercial license for this software may be purchased from INSIDE at
* http://www.insidesecure.com/
*
* This program is distributed in 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* http://www.gnu.org/copyleft/gpl.html
*/
/******************************************************************************/
#ifndef _h_PSTMATH
# define _h_PSTMATH
# include "../cryptoApi.h"
# if defined(USE_MATRIX_RSA) || defined(USE_MATRIX_ECC) || defined(USE_MATRIX_DH) || defined(USE_CL_RSA) || defined(USE_CL_DH) || defined(USE_QUICK_ASSIST_RSA) || defined(USE_QUICK_ASSIST_ECC)
# if defined(PS_PUBKEY_OPTIMIZE_FOR_FASTER_SPEED) && defined(PS_PUBKEY_OPTIMIZE_FOR_SMALLER_RAM)
# error "May only enable either PS_PUBKEY_OPTIMIZE_FOR_FASTER_SPEED or PS_PUBKEY_OPTIMIZE_FOR_SMALLER_RAM"
# endif
# if !defined(PS_PUBKEY_OPTIMIZE_FOR_FASTER_SPEED) && !defined(PS_PUBKEY_OPTIMIZE_FOR_SMALLER_RAM)
# define PS_PUBKEY_OPTIMIZE_FOR_SMALLER_RAM
# endif
# ifdef PS_PUBKEY_OPTIMIZE_FOR_SMALLER_RAM
# define PS_EXPTMOD_WINSIZE 3
# endif
# ifdef PS_PUBKEY_OPTIMIZE_FOR_FASTER_SPEED
# define PS_EXPTMOD_WINSIZE 5
# endif
/******************************************************************************/
/* Define this here to avoid including circular limits.h on some platforms */
# ifndef CHAR_BIT
# define CHAR_BIT 8
# endif
/******************************************************************************/
/*
If native 64 bit integers are not supported, we do not support 32x32->64
in hardware, so we must set the 16 bit flag to produce 16x16->32 products.
*/
# ifndef HAVE_NATIVE_INT64
# define PSTM_16BIT
# endif /* ! HAVE_NATIVE_INT64 */
/******************************************************************************/
/*
Some default configurations.
pstm_word should be the largest value the processor can hold as the product
of a multiplication. Most platforms support a 32x32->64 MAC instruction,
so 64bits is the default pstm_word size.
pstm_digit should be half the size of pstm_word
*/
# ifdef PSTM_8BIT
/* 8-bit digits, 16-bit word products */
typedef unsigned char pstm_digit;
typedef unsigned short pstm_word;
# define DIGIT_BIT 8
# elif defined(PSTM_16BIT)
/* 16-bit digits, 32-bit word products */
typedef unsigned short pstm_digit;
typedef unsigned long pstm_word;
# define DIGIT_BIT 16
# elif defined(PSTM_64BIT)
/* 64-bit digits, 128-bit word products */
# ifndef __GNUC__
# error "64bit digits requires GCC"
# endif
typedef unsigned long pstm_digit;
typedef unsigned long pstm_word __attribute__ ((mode(TI)));
# define DIGIT_BIT 64
# else
/* This is the default case, 32-bit digits, 64-bit word products */
typedef uint32 pstm_digit;
typedef uint64 pstm_word;
# define DIGIT_BIT 32
# define PSTM_32BIT
# endif /* digit and word size */
# define PSTM_MASK (pstm_digit) (-1)
# define PSTM_DIGIT_MAX PSTM_MASK
/******************************************************************************/
/*
equalities
*/
# define PSTM_LT -1 /* less than */
# define PSTM_EQ 0 /* equal to */
# define PSTM_GT 1 /* greater than */
# define PSTM_ZPOS 0 /* pstm_int.sign positive */
# define PSTM_NEG 1 /* pstm_int.sign negative */
# define PSTM_OKAY PS_SUCCESS
# define PSTM_MEM PS_MEM_FAIL
# define PSTM_AVAILABLE 1
/* replies */
# define PSTM_YES 1 /* yes response */
# define PSTM_NO 0 /* no response */
/******************************************************************************/
/* This is the maximum size that pstm_int.alloc can be for crypto operations.
Effectively, it is three times the size of the largest private key. */
# define PSTM_MAX_SIZE ((4096 / DIGIT_BIT) * 3)
typedef struct
{
pstm_digit *dp;
psPool_t *pool;
# if defined (__GNUC__) || defined(__llvm__)
/* Save a little space with compilers we know will handle this right */
uint32_t used : 12,
alloc : 12,
sign : 1;
# else
uint16_t used;
uint16_t alloc;
uint8_t sign;
# endif
} pstm_int;
/******************************************************************************/
/*
Operations on large integers
*/
# define pstm_iszero(a) (((a)->used == 0) ? PS_TRUE : PS_FALSE)
# define pstm_iseven(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? PS_TRUE : PS_FALSE)
# define pstm_isodd(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? PS_TRUE : PS_FALSE)
extern void pstm_set(pstm_int *a, pstm_digit b);
extern void pstm_zero(pstm_int *a);
extern int32_t pstm_init(psPool_t *pool, pstm_int *a);
extern int32_t pstm_init_size(psPool_t *pool, pstm_int *a, psSize_t size);
extern int32_t pstm_init_copy(psPool_t *pool, pstm_int *a, const pstm_int *b,
uint8_t toSqr);
extern int32_t pstm_init_for_read_unsigned_bin(psPool_t *pool, pstm_int *a,
psSize_t len);
extern int32_t pstm_grow(pstm_int *a, psSize_t size);
extern void pstm_clamp(pstm_int *a);
extern int32_t pstm_copy(const pstm_int *a, pstm_int *b);
extern void pstm_exch(pstm_int *a, pstm_int *b);
extern int32_t pstm_abs(const pstm_int *a, pstm_int *b);
extern void pstm_clear(pstm_int *a);
extern void pstm_clear_multi(
pstm_int *mp0, pstm_int *mp1, pstm_int *mp2, pstm_int *mp3,
pstm_int *mp4, pstm_int *mp5, pstm_int *mp6, pstm_int *mp7);
extern uint16_t pstm_unsigned_bin_size(const pstm_int *a);
extern uint16_t pstm_count_bits(const pstm_int *a);
extern int32_t pstm_read_unsigned_bin(pstm_int *a,
const unsigned char *buf, psSize_t len);
extern int32_t pstm_read_asn(psPool_t *pool, const unsigned char **pp, psSize_t len,
pstm_int *a);
extern int32_t pstm_to_unsigned_bin(psPool_t *pool, const pstm_int *a,
unsigned char *b);
extern int32_t pstm_to_unsigned_bin_nr(psPool_t *pool, const pstm_int *a,
unsigned char *b);
# if defined(USE_ECC) || defined(USE_CERT_GEN)
extern int32_t pstm_read_radix(psPool_t *pool, pstm_int *a,
const char *buf, psSize_t len, uint8_t radix);
# endif
extern int32_t pstm_cmp(const pstm_int *a, const pstm_int *b);
extern int32_t pstm_cmp_mag(const pstm_int *a, const pstm_int *b);
extern int32_t pstm_cmp_d(const pstm_int *a, pstm_digit b);
extern void pstm_rshd(pstm_int *a, uint16_t b);
extern int32_t pstm_lshd(pstm_int *a, uint16_t b);
extern int32_t pstm_add(const pstm_int *a, const pstm_int *b, pstm_int *c);
extern int32_t pstm_add_d(psPool_t *pool, const pstm_int *a, pstm_digit b, pstm_int *c);
extern int32_t pstm_sub_s(const pstm_int *a, const pstm_int *b, pstm_int *c);
extern int32_t pstm_sub(const pstm_int *a, const pstm_int *b, pstm_int *c);
extern int32_t pstm_sub_d(psPool_t *pool, const pstm_int *a, pstm_digit b, pstm_int *c);
extern int32_t pstm_div(psPool_t *pool, const pstm_int *a, const pstm_int *b,
pstm_int *c, pstm_int *d);
extern int32_t pstm_div_2d(psPool_t *pool, const pstm_int *a, int16_t b,
pstm_int *c, pstm_int *d);
extern int32_t pstm_div_2(const pstm_int *a, pstm_int *b);
extern int32_t pstm_mod(psPool_t *pool, const pstm_int *a, const pstm_int *b,
pstm_int *c);
extern int32_t pstm_invmod(psPool_t *pool, const pstm_int *a, const pstm_int *b,
pstm_int *c);
extern int32_t pstm_mul_2(const pstm_int *a, pstm_int *b);
extern int32_t pstm_mulmod(psPool_t *pool, const pstm_int *a, const pstm_int *b,
const pstm_int *c, pstm_int *d);
extern int32_t pstm_mul_comba(psPool_t *pool, const pstm_int *A, const pstm_int *B,
pstm_int *C, pstm_digit *paD, psSize_t paDlen);
extern int32_t pstm_mul_d(const pstm_int *a, const pstm_digit b, pstm_int *c);
extern int32_t pstm_sqr_comba(psPool_t *pool, const pstm_int *A, pstm_int *B,
pstm_digit *paD, psSize_t paDlen);
extern int32_t pstm_exptmod(psPool_t *pool, const pstm_int *G, const pstm_int *X,
const pstm_int *P, pstm_int *Y);
extern int32_t pstm_2expt(pstm_int *a, int16_t b);
extern int32_t pstm_montgomery_setup(const pstm_int *a, pstm_digit *rho);
extern int32_t pstm_montgomery_reduce(psPool_t *pool, pstm_int *a, const pstm_int *m,
pstm_digit mp, pstm_digit *paD, psSize_t paDlen);
extern int32_t pstm_montgomery_calc_normalization(pstm_int *a, const pstm_int *b);
# endif /* USE_MATRIX_RSA || USE_MATRIX_ECC || USE_MATRIX_DH || USE_CL_RSA || USE_CL_DH || USE_QUICK_ASSIST_RSA || USE_QUICK_ASSIST_ECC */
#endif /* _h_PSTMATH */
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