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wolfssl/ctaocrypt/include/tfm.h

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1.8.8 init
2011-02-05 22:14:47 +03:00
/* tfm.h
*
* Copyright (C) 2006-2011 Sawtooth Consulting Ltd.
*
* This file is part of CyaSSL.
*
* CyaSSL 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 2 of the License, or
* (at your option) any later version.
*
* CyaSSL 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
/*
* Based on public domain TomsFastMath 0.10 by Tom St Denis, tomstdenis@iahu.ca,
* http://math.libtomcrypt.com
*/
/**
* Edited by Mois<EFBFBD>s Guimar<EFBFBD>es (moises.guimaraes@phoebus.com.br)
* to fit CyaSSL's needs.
*/
#ifndef CTAO_CRYPT_TFM_H
#define CTAO_CRYPT_TFM_H
#include "types.h"
#ifndef CHAR_BIT
#include <limits.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef MIN
#define MIN(x,y) ((x)<(y)?(x):(y))
#endif
#ifndef MAX
#define MAX(x,y) ((x)>(y)?(x):(y))
#endif
/* externally define this symbol to ignore the default settings, useful for changing the build from the make process */
#ifndef TFM_ALREADY_SET
/* do we want the large set of small multiplications ?
Enable these if you are going to be doing a lot of small (<= 16 digit) multiplications say in ECC
Or if you're on a 64-bit machine doing RSA as a 1024-bit integer == 16 digits ;-)
*/
/* need to refactor the function */
/*#define TFM_SMALL_SET */
/* do we want huge code
Enable these if you are doing 20, 24, 28, 32, 48, 64 digit multiplications (useful for RSA)
Less important on 64-bit machines as 32 digits == 2048 bits
*/
#if 0
#define TFM_MUL3
#define TFM_MUL4
#define TFM_MUL6
#define TFM_MUL7
#define TFM_MUL8
#define TFM_MUL9
#define TFM_MUL12
#define TFM_MUL17
#endif
#ifdef TFM_SMALL_SET
#define TFM_MUL20
#define TFM_MUL24
#define TFM_MUL28
#define TFM_MUL32
#define TFM_MUL48
#define TFM_MUL64
#endif
#if 0
#define TFM_SQR3
#define TFM_SQR4
#define TFM_SQR6
#define TFM_SQR7
#define TFM_SQR8
#define TFM_SQR9
#define TFM_SQR12
#define TFM_SQR17
#endif
#ifdef TFM_SMALL_SET
#define TFM_SQR20
#define TFM_SQR24
#define TFM_SQR28
#define TFM_SQR32
#define TFM_SQR48
#define TFM_SQR64
#endif
/* do we want some overflow checks
Not required if you make sure your numbers are within range (e.g. by default a modulus for fp_exptmod() can only be upto 2048 bits long)
*/
/* #define TFM_CHECK */
/* Is the target a P4 Prescott
*/
/* #define TFM_PRESCOTT */
/* Do we want timing resistant fp_exptmod() ?
* This makes it slower but also timing invariant with respect to the exponent
*/
/* #define TFM_TIMING_RESISTANT */
#endif
/* Max size of any number in bits. Basically the largest size you will be multiplying
* should be half [or smaller] of FP_MAX_SIZE-four_digit
*
* You can externally define this or it defaults to 4096-bits [allowing multiplications upto 2048x2048 bits ]
*/
#ifndef FP_MAX_SIZE
#define FP_MAX_SIZE (4096+(8*DIGIT_BIT))
#endif
/* will this lib work? */
#if (CHAR_BIT & 7)
#error CHAR_BIT must be a multiple of eight.
#endif
#if FP_MAX_SIZE % CHAR_BIT
#error FP_MAX_SIZE must be a multiple of CHAR_BIT
#endif
/* autodetect x86-64 and make sure we are using 64-bit digits with x86-64 asm */
#if defined(__x86_64__)
#if defined(TFM_X86) || defined(TFM_SSE2) || defined(TFM_ARM)
#error x86-64 detected, x86-32/SSE2/ARM optimizations are not valid!
#endif
#if !defined(TFM_X86_64) && !defined(TFM_NO_ASM)
#define TFM_X86_64
#endif
#endif
#if defined(TFM_X86_64)
#if !defined(FP_64BIT)
#define FP_64BIT
#endif
#endif
/* try to detect x86-32 */
#if defined(__i386__) && !defined(TFM_SSE2)
#if defined(TFM_X86_64) || defined(TFM_ARM)
#error x86-32 detected, x86-64/ARM optimizations are not valid!
#endif
#if !defined(TFM_X86) && !defined(TFM_NO_ASM)
#define TFM_X86
#endif
#endif
/* make sure we're 32-bit for x86-32/sse/arm/ppc32 */
#if (defined(TFM_X86) || defined(TFM_SSE2) || defined(TFM_ARM) || defined(TFM_PPC32)) && defined(FP_64BIT)
#warning x86-32, SSE2 and ARM, PPC32 optimizations require 32-bit digits (undefining)
#undef FP_64BIT
#endif
/* multi asms? */
#ifdef TFM_X86
#define TFM_ASM
#endif
#ifdef TFM_X86_64
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
#ifdef TFM_SSE2
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
#ifdef TFM_ARM
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
#ifdef TFM_PPC32
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
#ifdef TFM_PPC64
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
#ifdef TFM_AVR32
#ifdef TFM_ASM
#error TFM_ASM already defined!
#endif
#define TFM_ASM
#endif
/* we want no asm? */
#ifdef TFM_NO_ASM
#undef TFM_X86
#undef TFM_X86_64
#undef TFM_SSE2
#undef TFM_ARM
#undef TFM_PPC32
#undef TFM_PPC64
#undef TFM_AVR32
#undef TFM_ASM
#endif
/* ECC helpers */
#ifdef TFM_ECC192
#ifdef FP_64BIT
#define TFM_MUL3
#define TFM_SQR3
#else
#define TFM_MUL6
#define TFM_SQR6
#endif
#endif
#ifdef TFM_ECC224
#ifdef FP_64BIT
#define TFM_MUL4
#define TFM_SQR4
#else
#define TFM_MUL7
#define TFM_SQR7
#endif
#endif
#ifdef TFM_ECC256
#ifdef FP_64BIT
#define TFM_MUL4
#define TFM_SQR4
#else
#define TFM_MUL8
#define TFM_SQR8
#endif
#endif
#ifdef TFM_ECC384
#ifdef FP_64BIT
#define TFM_MUL6
#define TFM_SQR6
#else
#define TFM_MUL12
#define TFM_SQR12
#endif
#endif
#ifdef TFM_ECC521
#ifdef FP_64BIT
#define TFM_MUL9
#define TFM_SQR9
#else
#define TFM_MUL17
#define TFM_SQR17
#endif
#endif
/* some default configurations.
*/
#if defined(FP_64BIT)
/* for GCC only on supported platforms */
#ifndef CRYPT
typedef unsigned long ulong64;
#endif
typedef ulong64 fp_digit;
typedef unsigned long fp_word __attribute__ ((mode(TI)));
#else
/* this is to make porting into LibTomCrypt easier :-) */
#ifndef CRYPT
#if defined(_MSC_VER) || defined(__BORLANDC__)
typedef unsigned __int64 ulong64;
typedef signed __int64 long64;
#else
typedef unsigned long long ulong64;
typedef signed long long long64;
#endif
#endif
typedef unsigned long fp_digit;
typedef ulong64 fp_word;
#endif
/* # of digits this is */
#define DIGIT_BIT (int)((CHAR_BIT) * sizeof(fp_digit))
#define FP_MASK (fp_digit)(-1)
#define FP_SIZE (FP_MAX_SIZE/DIGIT_BIT)
/* signs */
#define FP_ZPOS 0
#define FP_NEG 1
/* return codes */
#define FP_OKAY 0
#define FP_VAL 1
#define FP_MEM 2
/* equalities */
#define FP_LT -1 /* less than */
#define FP_EQ 0 /* equal to */
#define FP_GT 1 /* greater than */
/* replies */
#define FP_YES 1 /* yes response */
#define FP_NO 0 /* no response */
/* a FP type */
typedef struct {
fp_digit dp[FP_SIZE];
int used,
sign;
} fp_int;
/* functions */
/* returns a TFM ident string useful for debugging... */
/*const char *fp_ident(void);*/
/* initialize [or zero] an fp int */
#define fp_init(a) (void)XMEMSET((a), 0, sizeof(fp_int))
#define fp_zero(a) fp_init(a)
/* zero/even/odd ? */
#define fp_iszero(a) (((a)->used == 0) ? FP_YES : FP_NO)
#define fp_iseven(a) (((a)->used >= 0 && (((a)->dp[0] & 1) == 0)) ? FP_YES : FP_NO)
#define fp_isodd(a) (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? FP_YES : FP_NO)
/* set to a small digit */
void fp_set(fp_int *a, fp_digit b);
/* copy from a to b */
#define fp_copy(a, b) (void)(((a) != (b)) ? (XMEMCPY((b), (a), sizeof(fp_int))) : (void)0)
#define fp_init_copy(a, b) fp_copy(b, a)
/* clamp digits */
#define fp_clamp(a) { while ((a)->used && (a)->dp[(a)->used-1] == 0) --((a)->used); (a)->sign = (a)->used ? (a)->sign : FP_ZPOS; }
/* negate and absolute */
#define fp_neg(a, b) { fp_copy(a, b); (b)->sign ^= 1; fp_clamp(b); }
#define fp_abs(a, b) { fp_copy(a, b); (b)->sign = 0; }
/* right shift x digits */
void fp_rshd(fp_int *a, int x);
/* left shift x digits */
void fp_lshd(fp_int *a, int x);
/* signed comparison */
int fp_cmp(fp_int *a, fp_int *b);
/* unsigned comparison */
int fp_cmp_mag(fp_int *a, fp_int *b);
/* power of 2 operations */
void fp_div_2d(fp_int *a, int b, fp_int *c, fp_int *d);
void fp_mod_2d(fp_int *a, int b, fp_int *c);
void fp_mul_2d(fp_int *a, int b, fp_int *c);
void fp_2expt (fp_int *a, int b);
void fp_mul_2(fp_int *a, fp_int *c);
void fp_div_2(fp_int *a, fp_int *c);
/* Counts the number of lsbs which are zero before the first zero bit */
/*int fp_cnt_lsb(fp_int *a);*/
/* c = a + b */
void fp_add(fp_int *a, fp_int *b, fp_int *c);
/* c = a - b */
void fp_sub(fp_int *a, fp_int *b, fp_int *c);
/* c = a * b */
void fp_mul(fp_int *a, fp_int *b, fp_int *c);
/* b = a*a */
void fp_sqr(fp_int *a, fp_int *b);
/* a/b => cb + d == a */
int fp_div(fp_int *a, fp_int *b, fp_int *c, fp_int *d);
/* c = a mod b, 0 <= c < b */
int fp_mod(fp_int *a, fp_int *b, fp_int *c);
/* compare against a single digit */
int fp_cmp_d(fp_int *a, fp_digit b);
/* c = a + b */
/*void fp_add_d(fp_int *a, fp_digit b, fp_int *c);*/
/* c = a - b */
/*void fp_sub_d(fp_int *a, fp_digit b, fp_int *c);*/
/* c = a * b */
void fp_mul_d(fp_int *a, fp_digit b, fp_int *c);
/* a/b => cb + d == a */
/*int fp_div_d(fp_int *a, fp_digit b, fp_int *c, fp_digit *d);*/
/* c = a mod b, 0 <= c < b */
/*int fp_mod_d(fp_int *a, fp_digit b, fp_digit *c);*/
/* ---> number theory <--- */
/* d = a + b (mod c) */
/*int fp_addmod(fp_int *a, fp_int *b, fp_int *c, fp_int *d);*/
/* d = a - b (mod c) */
/*int fp_submod(fp_int *a, fp_int *b, fp_int *c, fp_int *d);*/
/* d = a * b (mod c) */
int fp_mulmod(fp_int *a, fp_int *b, fp_int *c, fp_int *d);
/* c = a * a (mod b) */
/*int fp_sqrmod(fp_int *a, fp_int *b, fp_int *c);*/
/* c = 1/a (mod b) */
int fp_invmod(fp_int *a, fp_int *b, fp_int *c);
/* c = (a, b) */
/*void fp_gcd(fp_int *a, fp_int *b, fp_int *c);*/
/* c = [a, b] */
/*void fp_lcm(fp_int *a, fp_int *b, fp_int *c);*/
/* setups the montgomery reduction */
int fp_montgomery_setup(fp_int *a, fp_digit *mp);
/* computes a = B**n mod b without division or multiplication useful for
* normalizing numbers in a Montgomery system.
*/
void fp_montgomery_calc_normalization(fp_int *a, fp_int *b);
/* computes x/R == x (mod N) via Montgomery Reduction */
void fp_montgomery_reduce(fp_int *a, fp_int *m, fp_digit mp);
/* d = a**b (mod c) */
int fp_exptmod(fp_int *a, fp_int *b, fp_int *c, fp_int *d);
/* primality stuff */
/* perform a Miller-Rabin test of a to the base b and store result in "result" */
/*void fp_prime_miller_rabin (fp_int * a, fp_int * b, int *result);*/
/* 256 trial divisions + 8 Miller-Rabins, returns FP_YES if probable prime */
/*int fp_isprime(fp_int *a);*/
/* Primality generation flags */
/*#define TFM_PRIME_BBS 0x0001 */ /* BBS style prime */
/*#define TFM_PRIME_SAFE 0x0002 */ /* Safe prime (p-1)/2 == prime */
/*#define TFM_PRIME_2MSB_OFF 0x0004 */ /* force 2nd MSB to 0 */
/*#define TFM_PRIME_2MSB_ON 0x0008 */ /* force 2nd MSB to 1 */
/* callback for fp_prime_random, should fill dst with random bytes and return how many read [upto len] */
/*typedef int tfm_prime_callback(unsigned char *dst, int len, void *dat);*/
/*#define fp_prime_random(a, t, size, bbs, cb, dat) fp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?TFM_PRIME_BBS:0, cb, dat)*/
/*int fp_prime_random_ex(fp_int *a, int t, int size, int flags, tfm_prime_callback cb, void *dat);*/
/* radix conersions */
int fp_count_bits(fp_int *a);
int fp_unsigned_bin_size(fp_int *a);
void fp_read_unsigned_bin(fp_int *a, unsigned char *b, int c);
void fp_to_unsigned_bin(fp_int *a, unsigned char *b);
/*int fp_signed_bin_size(fp_int *a);*/
/*void fp_read_signed_bin(fp_int *a, unsigned char *b, int c);*/
/*void fp_to_signed_bin(fp_int *a, unsigned char *b);*/
/*int fp_read_radix(fp_int *a, char *str, int radix);*/
/*int fp_toradix(fp_int *a, char *str, int radix);*/
/*int fp_toradix_n(fp_int * a, char *str, int radix, int maxlen);*/
/* VARIOUS LOW LEVEL STUFFS */
void s_fp_add(fp_int *a, fp_int *b, fp_int *c);
void s_fp_sub(fp_int *a, fp_int *b, fp_int *c);
void fp_reverse(unsigned char *s, int len);
void fp_mul_comba(fp_int *A, fp_int *B, fp_int *C);
#ifdef TFM_SMALL_SET
void fp_mul_comba_small(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL3
void fp_mul_comba3(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL4
void fp_mul_comba4(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL6
void fp_mul_comba6(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL7
void fp_mul_comba7(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL8
void fp_mul_comba8(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL9
void fp_mul_comba9(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL12
void fp_mul_comba12(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL17
void fp_mul_comba17(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL20
void fp_mul_comba20(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL24
void fp_mul_comba24(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL28
void fp_mul_comba28(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL32
void fp_mul_comba32(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL48
void fp_mul_comba48(fp_int *A, fp_int *B, fp_int *C);
#endif
#ifdef TFM_MUL64
void fp_mul_comba64(fp_int *A, fp_int *B, fp_int *C);
#endif
void fp_sqr_comba(fp_int *A, fp_int *B);
#ifdef TFM_SMALL_SET
void fp_sqr_comba_small(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR3
void fp_sqr_comba3(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR4
void fp_sqr_comba4(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR6
void fp_sqr_comba6(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR7
void fp_sqr_comba7(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR8
void fp_sqr_comba8(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR9
void fp_sqr_comba9(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR12
void fp_sqr_comba12(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR17
void fp_sqr_comba17(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR20
void fp_sqr_comba20(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR24
void fp_sqr_comba24(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR28
void fp_sqr_comba28(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR32
void fp_sqr_comba32(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR48
void fp_sqr_comba48(fp_int *A, fp_int *B);
#endif
#ifdef TFM_SQR64
void fp_sqr_comba64(fp_int *A, fp_int *B);
#endif
/*extern const char *fp_s_rmap;*/
/**
* Used by CyaSSL
*/
/* Types */
typedef fp_digit mp_digit;
typedef fp_word mp_word;
typedef fp_int mp_int;
/* Constants */
#define MP_LT FP_LT /* less than */
#define MP_EQ FP_EQ /* equal to */
#define MP_GT FP_GT /* greater than */
#define MP_OKAY FP_OKAY /* ok result */
#define MP_NO FP_NO /* yes/no result */
#define MP_YES FP_YES /* yes/no result */
/* Prototypes */
int mp_init (mp_int * a);
void mp_clear (mp_int * a);
int mp_init_multi(mp_int* a, mp_int* b, mp_int* c, mp_int* d, mp_int* e, mp_int* f);
int mp_add (mp_int * a, mp_int * b, mp_int * c);
int mp_sub (mp_int * a, mp_int * b, mp_int * c);
int mp_mul (mp_int * a, mp_int * b, mp_int * c);
int mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d);
int mp_mod(mp_int *a, mp_int *b, mp_int *c);
int mp_invmod(mp_int *a, mp_int *b, mp_int *c);
int mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y);
int mp_cmp(mp_int *a, mp_int *b);
int mp_cmp_d(mp_int *a, mp_digit b);
int mp_unsigned_bin_size(mp_int * a);
int mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c);
int mp_to_unsigned_bin (mp_int * a, unsigned char *b);
#ifdef HAVE_ECC
int mp_sqrmod(mp_int* a, mp_int* b, mp_int* c);
int mp_montgomery_calc_normalization(mp_int *a, mp_int *b);
int mp_read_radix(mp_int* a, const char* str, int radix);
int mp_iszero(mp_int* a);
int mp_set(fp_int *a, fp_digit b);
int mp_sqr(fp_int *A, fp_int *B);
int mp_montgomery_reduce(fp_int *a, fp_int *m, fp_digit mp);
int mp_montgomery_setup(fp_int *a, fp_digit *rho);
int mp_isodd(mp_int* a);
int mp_div_2(fp_int * a, fp_int * b);
#endif
#if defined(HAVE_ECC) || defined(CYASSL_KEY_GEN)
int mp_copy(fp_int* a, fp_int* b);
#endif
#ifdef CYASSL_KEY_GEN
int mp_set_int(fp_int *a, fp_digit b);
int mp_gcd(fp_int *a, fp_int *b, fp_int *c);
int mp_lcm(fp_int *a, fp_int *b, fp_int *c);
int mp_sub_d(fp_int *a, fp_digit b, fp_int *c);
int mp_prime_is_prime(mp_int* a, int t, int* result);
#endif /* CYASSL_KEY_GEN */
#ifdef __cplusplus
}
#endif
#endif /* CTAO_CRYPT_TFM_H */
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