summaryrefslogtreecommitdiffstats
path: root/libtommath/tommath.h
diff options
context:
space:
mode:
Diffstat (limited to 'libtommath/tommath.h')
-rw-r--r--libtommath/tommath.h210
1 files changed, 103 insertions, 107 deletions
diff --git a/libtommath/tommath.h b/libtommath/tommath.h
index 4b3a76f..da0e473 100644
--- a/libtommath/tommath.h
+++ b/libtommath/tommath.h
@@ -10,46 +10,27 @@
* The library is free for all purposes without any express
* guarantee it works.
*
- * Tom St Denis, tomstdenis@gmail.com, http://math.libtomcrypt.com
+ * Tom St Denis, tstdenis82@gmail.com, http://math.libtomcrypt.com
*/
#ifndef BN_H_
#define BN_H_
#include <stdio.h>
-#include <string.h>
#include <stdlib.h>
-#include <ctype.h>
+#include <stdint.h>
#include <limits.h>
#include <tommath_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
+#if defined(__x86_64__)
+ #if !(defined(MP_32BIT) || defined(MP_16BIT) || defined(MP_8BIT))
+ #define MP_64BIT
+ #endif
#endif
/* some default configurations.
@@ -61,70 +42,78 @@ extern "C" {
* [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;
+ typedef uint8_t mp_digit;
+ typedef uint16_t mp_word;
+#define MP_SIZEOF_MP_DIGIT 1
+#ifdef DIGIT_BIT
+#error You must not define DIGIT_BIT when using MP_8BIT
+#endif
#elif defined(MP_16BIT)
- typedef unsigned short mp_digit;
- typedef unsigned long mp_word;
+ typedef uint16_t mp_digit;
+ typedef uint32_t mp_word;
+#define MP_SIZEOF_MP_DIGIT 2
+#ifdef DIGIT_BIT
+#error You must not define DIGIT_BIT when using MP_16BIT
+#endif
#elif defined(MP_64BIT)
/* for GCC only on supported platforms */
#ifndef CRYPT
- typedef unsigned long long ulong64;
- typedef signed long long long64;
+ typedef unsigned long long ulong64;
+ typedef signed long long long64;
#endif
- typedef unsigned long mp_digit;
- typedef unsigned long mp_word __attribute__ ((mode(TI)));
+ typedef uint64_t mp_digit;
+#if defined(_WIN32)
+ typedef unsigned __int128 mp_word;
+#elif defined(__GNUC__)
+ typedef unsigned long mp_word __attribute__ ((mode(TI)));
+#else
+ /* it seems you have a problem
+ * but we assume you can somewhere define your own uint128_t */
+ typedef uint128_t mp_word;
+#endif
-# define DIGIT_BIT 60
+ #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
+ typedef unsigned long long ulong64;
+ typedef signed long long long64;
#endif
- typedef unsigned long mp_digit;
- typedef ulong64 mp_word;
+ typedef uint32_t mp_digit;
+ typedef uint64_t mp_word;
-#ifdef MP_31BIT
+#ifdef MP_31BIT
/* this is an extension that uses 31-bit digits */
-# define DIGIT_BIT 31
+ #define DIGIT_BIT 31
#else
/* default case is 28-bit digits, defines MP_28BIT as a handy macro to test */
-# define DIGIT_BIT 28
-# define MP_28BIT
-#endif
+ #define DIGIT_BIT 28
+ #define MP_28BIT
#endif
-
-/* define heap macros */
-#ifndef CRYPT
- /* default to libc stuff */
-# ifndef XMALLOC
-# define XMALLOC malloc
-# define XFREE free
-# define XREALLOC realloc
-# define XCALLOC calloc
-# else
- /* prototypes for our heap functions */
- extern void *XMALLOC(size_t n);
- extern void *XREALLOC(void *p, size_t n);
- extern void *XCALLOC(size_t n, size_t s);
- extern void XFREE(void *p);
-# 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 */
+ #define DIGIT_BIT (((CHAR_BIT * MP_SIZEOF_MP_DIGIT) - 1)) /* bits per digit */
+ typedef uint_least32_t mp_min_u32;
+#else
+ typedef mp_digit mp_min_u32;
+#endif
+
+/* platforms that can use a better rand function */
+#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
+ #define MP_USE_ALT_RAND 1
+#endif
+
+/* use arc4random on platforms that support it */
+#ifdef MP_USE_ALT_RAND
+ #define MP_GEN_RANDOM() arc4random()
+#else
+ #define MP_GEN_RANDOM() rand()
#endif
#define MP_DIGIT_BIT DIGIT_BIT
@@ -165,15 +154,15 @@ extern int KARATSUBA_MUL_CUTOFF,
/* default precision */
#ifndef MP_PREC
-# ifndef MP_LOW_MEM
-# define MP_PREC 32 /* default digits of precision */
-# else
-# define MP_PREC 8 /* default digits of precision */
-# endif
+ #ifndef MP_LOW_MEM
+ #define MP_PREC 32 /* default digits of precision */
+ #else
+ #define MP_PREC 8 /* 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))
+#define MP_WARRAY (1 << (((sizeof(mp_word) * CHAR_BIT) - (2 * DIGIT_BIT)) + 1))
/* the infamous mp_int structure */
typedef struct {
@@ -190,7 +179,7 @@ typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
#define SIGN(m) ((m)->sign)
/* error code to char* string */
-char *mp_error_to_string(int code);
+const char *mp_error_to_string(int code);
/* ---> init and deinit bignum functions <--- */
/* init a bignum */
@@ -219,8 +208,9 @@ int mp_init_size(mp_int *a, int size);
/* ---> 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)
+#define mp_iseven(a) ((((a)->used > 0) && (((a)->dp[0] & 1u) == 0u)) ? MP_YES : MP_NO)
+#define mp_isodd(a) ((((a)->used > 0) && (((a)->dp[0] & 1u) == 1u)) ? MP_YES : MP_NO)
+#define mp_isneg(a) (((a)->sign != MP_ZPOS) ? MP_YES : MP_NO)
/* set to zero */
void mp_zero(mp_int *a);
@@ -231,9 +221,21 @@ void mp_set(mp_int *a, mp_digit b);
/* set a 32-bit const */
int mp_set_int(mp_int *a, unsigned long b);
+/* set a platform dependent unsigned long value */
+int mp_set_long(mp_int *a, unsigned long b);
+
+/* set a platform dependent unsigned long long value */
+int mp_set_long_long(mp_int *a, unsigned long long b);
+
/* get a 32-bit value */
unsigned long mp_get_int(mp_int * a);
+/* get a platform dependent unsigned long value */
+unsigned long mp_get_long(mp_int * a);
+
+/* get a platform dependent unsigned long long value */
+unsigned long long mp_get_long_long(mp_int * a);
+
/* initialize and set a digit */
int mp_init_set (mp_int * a, mp_digit b);
@@ -249,6 +251,12 @@ int mp_init_copy(mp_int *a, mp_int *b);
/* trim unused digits */
void mp_clamp(mp_int *a);
+/* import binary data */
+int mp_import(mp_int* rop, size_t count, int order, size_t size, int endian, size_t nails, const void* op);
+
+/* export binary data */
+int mp_export(void* rop, size_t* countp, int order, size_t size, int endian, size_t nails, mp_int* op);
+
/* ---> digit manipulation <--- */
/* right shift by "b" digits */
@@ -257,19 +265,19 @@ void mp_rshd(mp_int *a, int b);
/* left shift by "b" digits */
int mp_lshd(mp_int *a, int b);
-/* c = a / 2**b */
+/* c = a / 2**b, implemented as c = a >> b */
int mp_div_2d(const mp_int *a, int b, mp_int *c, mp_int *d);
/* b = a/2 */
int mp_div_2(mp_int *a, mp_int *b);
-/* c = a * 2**b */
+/* c = a * 2**b, implemented as c = a << b */
int mp_mul_2d(const mp_int *a, int b, mp_int *c);
/* b = a*2 */
int mp_mul_2(mp_int *a, mp_int *b);
-/* c = a mod 2**d */
+/* c = a mod 2**b */
int mp_mod_2d(const mp_int *a, int b, mp_int *c);
/* computes a = 2**b */
@@ -347,6 +355,7 @@ int mp_div_3(mp_int *a, mp_int *c, mp_digit *d);
/* c = a**b */
int mp_expt_d(mp_int *a, mp_digit b, mp_int *c);
+int mp_expt_d_ex (mp_int * a, mp_digit b, mp_int * c, int fast);
/* c = a mod b, 0 <= c < b */
int mp_mod_d(mp_int *a, mp_digit b, mp_digit *c);
@@ -382,10 +391,14 @@ int mp_lcm(mp_int *a, mp_int *b, mp_int *c);
* returns error if a < 0 and b is even
*/
int mp_n_root(mp_int *a, mp_digit b, mp_int *c);
+int mp_n_root_ex (mp_int * a, mp_digit b, mp_int * c, int fast);
/* special sqrt algo */
int mp_sqrt(mp_int *arg, mp_int *ret);
+/* special sqrt (mod prime) */
+int mp_sqrtmod_prime(mp_int *arg, mp_int *prime, mp_int *ret);
+
/* is number a square? */
int mp_is_square(mp_int *arg, int *ret);
@@ -453,7 +466,7 @@ int mp_exptmod(mp_int *a, mp_int *b, mp_int *c, mp_int *d);
#endif
/* table of first PRIME_SIZE primes */
-extern const mp_digit ltm_prime_tab[];
+extern const mp_digit ltm_prime_tab[PRIME_SIZE];
/* result=1 if a is divisible by one of the first PRIME_SIZE primes */
int mp_prime_is_divisible(mp_int *a, int *result);
@@ -469,7 +482,7 @@ int mp_prime_fermat(mp_int *a, mp_int *b, int *result);
int mp_prime_miller_rabin(mp_int *a, mp_int *b, int *result);
/* This gives [for a given bit size] the number of trials required
- * such that Miller-Rabin gives a prob of failure lower than 2^-96
+ * such that Miller-Rabin gives a prob of failure lower than 2^-96
*/
int mp_prime_rabin_miller_trials(int size);
@@ -490,7 +503,7 @@ int mp_prime_is_prime(mp_int *a, int t, int *result);
int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
/* makes a truly random prime of a given size (bytes),
- * call with bbs = 1 if you want it to be congruent to 3 mod 4
+ * call with bbs = 1 if you want it to be congruent to 3 mod 4
*
* You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can
* have passed to the callback (e.g. a state or something). This function doesn't use "dat" itself
@@ -503,10 +516,9 @@ int mp_prime_next_prime(mp_int *a, int t, int bbs_style);
/* makes a truly random prime of a given size (bits),
*
* Flags are as follows:
- *
+ *
* LTM_PRIME_BBS - make prime congruent to 3 mod 4
* LTM_PRIME_SAFE - make sure (p-1)/2 is prime as well (implies LTM_PRIME_BBS)
- * LTM_PRIME_2MSB_OFF - make the 2nd highest bit zero
* LTM_PRIME_2MSB_ON - make the 2nd highest bit one
*
* You have to supply a callback which fills in a buffer with random bytes. "dat" is a parameter you can
@@ -534,8 +546,10 @@ int mp_toradix(mp_int *a, char *str, int radix);
int mp_toradix_n(mp_int * a, char *str, int radix, int maxlen);
int mp_radix_size(mp_int *a, int radix, int *size);
+#ifndef LTM_NO_FILE
int mp_fread(mp_int *a, int radix, FILE *stream);
int mp_fwrite(mp_int *a, int radix, FILE *stream);
+#endif
#define mp_read_raw(mp, str, len) mp_read_signed_bin((mp), (str), (len))
#define mp_raw_size(mp) mp_signed_bin_size(mp)
@@ -549,31 +563,13 @@ int mp_fwrite(mp_int *a, int radix, FILE *stream);
#define mp_todecimal(M, S) mp_toradix((M), (S), 10)
#define mp_tohex(M, S) mp_toradix((M), (S), 16)
-/* lowlevel functions, do not call! */
-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);
-#define s_mp_mul(a, b, c) s_mp_mul_digs(a, b, c, (a)->used + (b)->used + 1)
-int fast_s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
-int s_mp_mul_digs(mp_int *a, mp_int *b, mp_int *c, int digs);
-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 fast_s_mp_sqr(mp_int *a, mp_int *b);
-int s_mp_sqr(mp_int *a, mp_int *b);
-int mp_karatsuba_mul(mp_int *a, mp_int *b, mp_int *c);
-int mp_toom_mul(mp_int *a, mp_int *b, mp_int *c);
-int mp_karatsuba_sqr(mp_int *a, mp_int *b);
-int mp_toom_sqr(mp_int *a, mp_int *b);
-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 fast_mp_montgomery_reduce(mp_int *a, mp_int *m, mp_digit mp);
-int mp_exptmod_fast(mp_int *G, mp_int *X, mp_int *P, mp_int *Y, int mode);
-int s_mp_exptmod (mp_int * G, mp_int * X, mp_int * P, mp_int * Y, int mode);
-void bn_reverse(unsigned char *s, int len);
-
-extern const char *mp_s_rmap;
-
#ifdef __cplusplus
}
#endif
#endif
+
+
+/* $Source$ */
+/* $Revision$ */
+/* $Date$ */