diff options
Diffstat (limited to 'libtommath/tommath.h')
| -rw-r--r-- | libtommath/tommath.h | 54 |
1 files changed, 31 insertions, 23 deletions
diff --git a/libtommath/tommath.h b/libtommath/tommath.h index 51f703b..c0f3080 100644 --- a/libtommath/tommath.h +++ b/libtommath/tommath.h @@ -9,8 +9,6 @@ * * The library is free for all purposes without any express * guarantee it works. - * - * Tom St Denis, tstdenis82@gmail.com, http://math.libtomcrypt.com */ #ifndef BN_H_ #define BN_H_ @@ -27,7 +25,7 @@ extern "C" { #endif /* MS Visual C++ doesn't have a 128bit type for words, so fall back to 32bit MPI's (where words are 64bit) */ -#if defined(_MSC_VER) || defined(__LLP64__) +#if defined(_MSC_VER) || defined(__LLP64__) || defined(__e2k__) || defined(__LCC__) # define MP_32BIT #endif @@ -39,7 +37,13 @@ extern "C" { defined(__ia64) || defined(__ia64__) || defined(__itanium__) || defined(_M_IA64) || \ defined(__LP64__) || defined(_LP64) || defined(__64BIT__) # if !(defined(MP_32BIT) || defined(MP_16BIT) || defined(MP_8BIT) || defined(_MSC_VER)) -# define MP_64BIT +# if defined(__GNUC__) +/* we support 128bit integers only via: __attribute__((mode(TI))) */ +# define MP_64BIT +# else +/* otherwise we fall back to MP_32BIT even on 64bit platforms */ +# define MP_32BIT +# endif # endif #endif @@ -70,14 +74,7 @@ typedef uint32_t mp_word; #elif defined(MP_64BIT) /* for GCC only on supported platforms */ typedef uint64_t mp_digit; -# if 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 #else /* this is the default case, 28-bit digits */ @@ -104,18 +101,6 @@ typedef uint_least32_t mp_min_u32; typedef mp_digit mp_min_u32; #endif -/* use arc4random on platforms that support it */ -#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__DragonFly__) -# define MP_GEN_RANDOM() arc4random() -# define MP_GEN_RANDOM_MAX 0xffffffffu -#endif - -/* use rand() as fall-back if there's no better rand function */ -#ifndef MP_GEN_RANDOM -# define MP_GEN_RANDOM() rand() -# define MP_GEN_RANDOM_MAX RAND_MAX -#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 @@ -291,6 +276,14 @@ int mp_cnt_lsb(const mp_int *a); /* makes a pseudo-random int of a given size */ int mp_rand(mp_int *a, int digits); +#ifdef MP_PRNG_ENABLE_LTM_RNG +/* as last resort we will fall back to libtomcrypt's rng_get_bytes() + * in case you don't use libtomcrypt or use it w/o rng_get_bytes() + * you have to implement it somewhere else, as it's required */ +extern unsigned long (*ltm_rng)(unsigned char *out, unsigned long outlen, void (*callback)(void)); +extern void (*ltm_rng_callback)(void); +#endif + /* ---> binary operations <--- */ /* c = a XOR b */ int mp_xor(const mp_int *a, const mp_int *b, mp_int *c); @@ -301,8 +294,23 @@ int mp_or(const mp_int *a, const mp_int *b, mp_int *c); /* c = a AND b */ int mp_and(const mp_int *a, const mp_int *b, mp_int *c); +/* c = a XOR b (two complement) */ +int mp_tc_xor(const mp_int *a, const mp_int *b, mp_int *c); + +/* c = a OR b (two complement) */ +int mp_tc_or(const mp_int *a, const mp_int *b, mp_int *c); + +/* c = a AND b (two complement) */ +int mp_tc_and(const mp_int *a, const mp_int *b, mp_int *c); + +/* right shift (two complement) */ +int mp_tc_div_2d(const mp_int *a, int b, mp_int *c); + /* ---> Basic arithmetic <--- */ +/* b = ~a */ +int mp_complement(const mp_int *a, mp_int *b); + /* b = -a */ int mp_neg(const mp_int *a, mp_int *b); |