Diff: integer.h

Revision:

0:5045d2638c29

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/integer.h	Sat Feb 05 01:09:17 2011 +0000
@@ -0,0 +1,325 @@
+/* integer.h
+ *
+ * Copyright (C) 2006-2009 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 LibTomMath 0.38 by Tom St Denis, tomstdenis@iahu.ca,
+ * http://math.libtomcrypt.com
+ */
+
+
+#ifndef CTAO_CRYPT_INTEGER_H
+#define CTAO_CRYPT_INTEGER_H
+
+/* may optionally use fast math instead, not yet supported on all platforms and
+   may not be faster on all
+*/
+#include "types.h"
+#ifdef USE_FAST_MATH
+    #include "tfm.h"
+#else
+
+#ifndef CHAR_BIT
+    #include <limits.h>
+#endif
+
+#include "types.h"       /* will set MP_xxBIT if not default */
+#include "mpi_class.h"
+
+#ifndef MIN
+   #define MIN(x,y) ((x)<(y)?(x):(y))
+#endif
+
+#ifndef MAX
+   #define MAX(x,y) ((x)>(y)?(x):(y))
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+
+/* C++ compilers don't like assigning void * to mp_digit * */
+#define  OPT_CAST(x)  (x *)
+
+#else
+
+/* C on the other hand doesn't care */
+#define  OPT_CAST(x)
+
+#endif
+
+
+/* detect 64-bit mode if possible */
+#if defined(__x86_64__) 
+   #if !(defined(MP_64BIT) && defined(MP_16BIT) && defined(MP_8BIT))
+      #define MP_64BIT
+   #endif
+#endif
+
+/* some default configurations.
+ *
+ * A "mp_digit" must be able to hold DIGIT_BIT + 1 bits
+ * A "mp_word" must be able to hold 2*DIGIT_BIT + 1 bits
+ *
+ * At the very least a mp_digit must be able to hold 7 bits
+ * [any size beyond that is ok provided it doesn't overflow the data type]
+ */
+#ifdef MP_8BIT
+   typedef unsigned char      mp_digit;
+   typedef unsigned short     mp_word;
+#elif defined(MP_16BIT)
+   typedef unsigned short     mp_digit;
+   typedef unsigned long      mp_word;
+#elif defined(MP_64BIT)
+   /* for GCC only on supported platforms */
+#ifndef CRYPT
+   typedef unsigned long long ulong64;
+   typedef signed long long   long64;
+#endif
+
+   typedef unsigned long      mp_digit;
+   typedef unsigned long      mp_word __attribute__ ((mode(TI)));
+
+   #define DIGIT_BIT          60
+#else
+   /* this is the default case, 28-bit digits */
+   
+   /* 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      mp_digit;
+   typedef ulong64            mp_word;
+
+#ifdef MP_31BIT   
+   /* this is an extension that uses 31-bit digits */
+   #define DIGIT_BIT          31
+#else
+   /* default case is 28-bit digits, defines MP_28BIT as a handy test macro */
+   #define DIGIT_BIT          28
+   #define MP_28BIT
+#endif   
+#endif
+
+
+/* otherwise the bits per digit is calculated automatically from the size of
+   a mp_digit */
+#ifndef DIGIT_BIT
+   #define DIGIT_BIT ((int)((CHAR_BIT * sizeof(mp_digit) - 1)))
+      /* bits per digit */
+#endif
+
+#define MP_DIGIT_BIT     DIGIT_BIT
+#define MP_MASK          ((((mp_digit)1)<<((mp_digit)DIGIT_BIT))-((mp_digit)1))
+#define MP_DIGIT_MAX     MP_MASK
+
+/* equalities */
+#define MP_LT        -1   /* less than */
+#define MP_EQ         0   /* equal to */
+#define MP_GT         1   /* greater than */
+
+#define MP_ZPOS       0   /* positive integer */
+#define MP_NEG        1   /* negative */
+
+#define MP_OKAY       0   /* ok result */
+#define MP_MEM        -2  /* out of mem */
+#define MP_VAL        -3  /* invalid input */
+#define MP_RANGE      MP_VAL
+
+#define MP_YES        1   /* yes response */
+#define MP_NO         0   /* no response */
+
+/* Primality generation flags */
+#define LTM_PRIME_BBS      0x0001 /* BBS style prime */
+#define LTM_PRIME_SAFE     0x0002 /* Safe prime (p-1)/2 == prime */
+#define LTM_PRIME_2MSB_ON  0x0008 /* force 2nd MSB to 1 */
+
+typedef int           mp_err;
+
+/* define this to use lower memory usage routines (exptmods mostly) */
+#define MP_LOW_MEM
+
+/* default precision */
+#ifndef MP_PREC
+   #ifndef MP_LOW_MEM
+      #define MP_PREC                 32     /* default digits of precision */
+   #else
+      #define MP_PREC                 1      /* default digits of precision */
+   #endif   
+#endif
+
+/* size of comba arrays, should be at least 2 * 2**(BITS_PER_WORD - 
+   BITS_PER_DIGIT*2) */
+#define MP_WARRAY  (1 << (sizeof(mp_word) * CHAR_BIT - 2 * DIGIT_BIT + 1))
+
+/* the infamous mp_int structure */
+typedef struct  {
+    int used, alloc, sign;
+    mp_digit *dp;
+} mp_int;
+
+/* callback for mp_prime_random, should fill dst with random bytes and return
+   how many read [upto len] */
+typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
+
+
+#define USED(m)    ((m)->used)
+#define DIGIT(m,k) ((m)->dp[(k)])
+#define SIGN(m)    ((m)->sign)
+
+
+/* ---> Basic Manipulations <--- */
+#define mp_iszero(a) (((a)->used == 0) ? MP_YES : MP_NO)
+#define mp_iseven(a) \
+    (((a)->used > 0 && (((a)->dp[0] & 1) == 0)) ? MP_YES : MP_NO)
+#define mp_isodd(a) \
+    (((a)->used > 0 && (((a)->dp[0] & 1) == 1)) ? MP_YES : MP_NO)
+
+
+/* number of primes */
+#ifdef MP_8BIT
+   #define PRIME_SIZE      31
+#else
+   #define PRIME_SIZE      256
+#endif
+
+#define mp_prime_random(a, t, size, bbs, cb, dat) \
+   mp_prime_random_ex(a, t, ((size) * 8) + 1, (bbs==1)?LTM_PRIME_BBS:0, cb, dat)
+
+#define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
+#define mp_raw_size(mp)           mp_signed_bin_size(mp)
+#define mp_toraw(mp, str)         mp_to_signed_bin((mp), (str))
+#define mp_read_mag(mp, str, len) mp_read_unsigned_bin((mp), (str), (len))
+#define mp_mag_size(mp)           mp_unsigned_bin_size(mp)
+#define mp_tomag(mp, str)         mp_to_unsigned_bin((mp), (str))
+
+#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)
+
+#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
+
+extern const char *mp_s_rmap;
+
+/* 6 functions needed by Rsa */
+int  mp_init (mp_int * a);
+void mp_clear (mp_int * a);
+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);
+int  mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y);
+/* end functions needed by Rsa */
+
+/* functions added to support above needed, removed TOOM and KARATSUBA */
+int  mp_count_bits (mp_int * a);
+int  mp_init_copy (mp_int * a, mp_int * b);
+int  mp_copy (mp_int * a, mp_int * b);
+int  mp_grow (mp_int * a, int size);
+void bn_reverse (unsigned char *s, int len);
+int  mp_div_2d (mp_int * a, int b, mp_int * c, mp_int * d);
+void mp_zero (mp_int * a);
+void mp_clamp (mp_int * a);
+void mp_exch (mp_int * a, mp_int * b);
+void mp_rshd (mp_int * a, int b);
+int  mp_mod_2d (mp_int * a, int b, mp_int * c);
+int  mp_read_unsigned_bin (mp_int * a, const unsigned char *b, int c);
+int  mp_mul_2d (mp_int * a, int b, mp_int * c);
+int  mp_lshd (mp_int * a, int b);
+int  mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y);
+int  mp_abs (mp_int * a, mp_int * b);
+int  mp_invmod (mp_int * a, mp_int * b, mp_int * c);
+int  fast_mp_invmod (mp_int * a, mp_int * b, mp_int * c);
+int  mp_invmod_slow (mp_int * a, mp_int * b, mp_int * c);
+int  mp_cmp_mag (mp_int * a, mp_int * b);
+int  mp_cmp (mp_int * a, mp_int * b);
+int  mp_cmp_d(mp_int * a, mp_digit b);
+void mp_set (mp_int * a, mp_digit b);
+int  mp_mod (mp_int * a, mp_int * b, mp_int * c);
+int  mp_div(mp_int * a, mp_int * b, mp_int * c, mp_int * d);
+int  mp_div_2(mp_int * a, mp_int * b);
+int  mp_add (mp_int * a, mp_int * b, mp_int * c);
+int  s_mp_add (mp_int * a, mp_int * b, mp_int * c);
+int  s_mp_sub (mp_int * a, mp_int * b, mp_int * c);
+int  mp_sub (mp_int * a, mp_int * b, mp_int * c);
+int  mp_init (mp_int * a);
+int  mp_reduce_is_2k_l(mp_int *a);
+int  mp_reduce_is_2k(mp_int *a);
+int  mp_dr_is_modulus(mp_int *a);
+int  mp_exptmod_fast (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int);
+int  mp_montgomery_setup (mp_int * n, mp_digit * rho);
+int  fast_mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho);
+int  mp_montgomery_reduce (mp_int * x, mp_int * n, mp_digit rho);
+void mp_dr_setup(mp_int *a, mp_digit *d);
+int  mp_dr_reduce (mp_int * x, mp_int * n, mp_digit k);
+int  mp_reduce_2k(mp_int *a, mp_int *n, mp_digit d);
+int  fast_s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
+int  s_mp_mul_high_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
+int  mp_reduce_2k_setup_l(mp_int *a, mp_int *d);
+int  mp_reduce_2k_l(mp_int *a, mp_int *n, mp_int *d);
+int  mp_reduce (mp_int * x, mp_int * m, mp_int * mu);
+int  mp_reduce_setup (mp_int * a, mp_int * b);
+int  s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int redmode);
+int  mp_montgomery_calc_normalization (mp_int * a, mp_int * b);
+int  s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
+int  s_mp_sqr (mp_int * a, mp_int * b);
+int  fast_s_mp_mul_digs (mp_int * a, mp_int * b, mp_int * c, int digs);
+int  fast_s_mp_sqr (mp_int * a, mp_int * b);
+int  mp_init_size (mp_int * a, int size);
+int  mp_div_3 (mp_int * a, mp_int *c, mp_digit * d);
+int  mp_mul_2(mp_int * a, mp_int * b);
+int  mp_mul (mp_int * a, mp_int * b, mp_int * c);
+int  mp_sqr (mp_int * a, mp_int * b);
+int  mp_mulmod (mp_int * a, mp_int * b, mp_int * c, mp_int * d);
+int  mp_mul_d (mp_int * a, mp_digit b, mp_int * c);
+int  mp_2expt (mp_int * a, int b);
+int  mp_reduce_2k_setup(mp_int *a, mp_digit *d);
+/* end support added functions */
+
+/* added */
+int mp_init_multi(mp_int* a, mp_int* b, mp_int* c, mp_int* d, mp_int* e,
+                  mp_int* f);
+
+#ifdef CYASSL_KEY_GEN
+    int mp_prime_is_prime (mp_int * a, int t, int *result);
+    int mp_set_int (mp_int * a, unsigned long b);
+    int mp_gcd (mp_int * a, mp_int * b, mp_int * c);
+    int mp_lcm (mp_int * a, mp_int * b, mp_int * c);
+    int mp_sub_d (mp_int * a, mp_digit b, mp_int * c);
+#endif
+
+
+#ifdef __cplusplus
+   }
+#endif
+
+
+#endif /* USE_FAST_MATH */
+
+#endif  /* CTAO_CRYPT_INTEGER_H */
+