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rsaenh: Declare some functions static.

This commit is contained in:
Andrew Talbot 2009-01-20 22:33:24 +00:00 committed by Alexandre Julliard
parent 2ef02afe95
commit 98dad20925
2 changed files with 133 additions and 153 deletions
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267
dlls/rsaenh/mpi.c
View File

@ -52,6 +52,42 @@ static int mp_invmod_slow (const mp_int * a, mp_int * b, mp_int * c);
static int mp_karatsuba_mul(const mp_int *a, const mp_int *b, mp_int *c);
static int mp_karatsuba_sqr(const mp_int *a, mp_int *b);
/* grow as required */
static int mp_grow (mp_int * a, int size)
{
int i;
mp_digit *tmp;
/* if the alloc size is smaller alloc more ram */
if (a->alloc < size) {
/* ensure there are always at least MP_PREC digits extra on top */
size += (MP_PREC * 2) - (size % MP_PREC);
/* reallocate the array a->dp
*
* We store the return in a temporary variable
* in case the operation failed we don't want
* to overwrite the dp member of a.
*/
tmp = realloc (a->dp, sizeof (mp_digit) * size);
if (tmp == NULL) {
/* reallocation failed but "a" is still valid [can be freed] */
return MP_MEM;
}
/* reallocation succeeded so set a->dp */
a->dp = tmp;
/* zero excess digits */
i = a->alloc;
a->alloc = size;
for (; i < a->alloc; i++) {
a->dp[i] = 0;
}
}
return MP_OKAY;
}
/* b = a/2 */
static int mp_div_2(const mp_int * a, mp_int * b)
{
@ -99,6 +135,103 @@ static int mp_div_2(const mp_int * a, mp_int * b)
return MP_OKAY;
}
/* swap the elements of two integers, for cases where you can't simply swap the
* mp_int pointers around
*/
static void
mp_exch (mp_int * a, mp_int * b)
{
mp_int t;
t = *a;
*a = *b;
*b = t;
}
/* init a new mp_int */
static int mp_init (mp_int * a)
{
int i;
/* allocate memory required and clear it */
a->dp = malloc (sizeof (mp_digit) * MP_PREC);
if (a->dp == NULL) {
return MP_MEM;
}
/* set the digits to zero */
for (i = 0; i < MP_PREC; i++) {
a->dp[i] = 0;
}
/* set the used to zero, allocated digits to the default precision
* and sign to positive */
a->used = 0;
a->alloc = MP_PREC;
a->sign = MP_ZPOS;
return MP_OKAY;
}
/* init an mp_init for a given size */
static int mp_init_size (mp_int * a, int size)
{
int x;
/* pad size so there are always extra digits */
size += (MP_PREC * 2) - (size % MP_PREC);
/* alloc mem */
a->dp = malloc (sizeof (mp_digit) * size);
if (a->dp == NULL) {
return MP_MEM;
}
/* set the members */
a->used = 0;
a->alloc = size;
a->sign = MP_ZPOS;
/* zero the digits */
for (x = 0; x < size; x++) {
a->dp[x] = 0;
}
return MP_OKAY;
}
/* clear one (frees) */
static void
mp_clear (mp_int * a)
{
int i;
/* only do anything if a hasn't been freed previously */
if (a->dp != NULL) {
/* first zero the digits */
for (i = 0; i < a->used; i++) {
a->dp[i] = 0;
}
/* free ram */
free(a->dp);
/* reset members to make debugging easier */
a->dp = NULL;
a->alloc = a->used = 0;
a->sign = MP_ZPOS;
}
}
/* set to zero */
static void
mp_zero (mp_int * a)
{
a->sign = MP_ZPOS;
a->used = 0;
memset (a->dp, 0, sizeof (mp_digit) * a->alloc);
}
/* computes the modular inverse via binary extended euclidean algorithm,
* that is c = 1/a mod b
*
@ -846,30 +979,6 @@ mp_clamp (mp_int * a)
}
}
/* clear one (frees) */
void
mp_clear (mp_int * a)
{
int i;
/* only do anything if a hasn't been freed previously */
if (a->dp != NULL) {
/* first zero the digits */
for (i = 0; i < a->used; i++) {
a->dp[i] = 0;
}
/* free ram */
free(a->dp);
/* reset members to make debugging easier */
a->dp = NULL;
a->alloc = a->used = 0;
a->sign = MP_ZPOS;
}
}
void mp_clear_multi(mp_int *mp, ...)
{
mp_int* next_mp = mp;
@ -1499,19 +1608,6 @@ static void mp_dr_setup(const mp_int *a, mp_digit *d)
((mp_word)a->dp[0]));
}
/* swap the elements of two integers, for cases where you can't simply swap the
* mp_int pointers around
*/
void
mp_exch (mp_int * a, mp_int * b)
{
mp_int t;
t = *a;
*a = *b;
*b = t;
}
/* this is a shell function that calls either the normal or Montgomery
* exptmod functions. Originally the call to the montgomery code was
* embedded in the normal function but that wasted a lot of stack space
@ -1943,67 +2039,6 @@ unsigned long mp_get_int(const mp_int * a)
return res & 0xFFFFFFFFUL;
}
/* grow as required */
int mp_grow (mp_int * a, int size)
{
int i;
mp_digit *tmp;
/* if the alloc size is smaller alloc more ram */
if (a->alloc < size) {
/* ensure there are always at least MP_PREC digits extra on top */
size += (MP_PREC * 2) - (size % MP_PREC);
/* reallocate the array a->dp
*
* We store the return in a temporary variable
* in case the operation failed we don't want
* to overwrite the dp member of a.
*/
tmp = realloc (a->dp, sizeof (mp_digit) * size);
if (tmp == NULL) {
/* reallocation failed but "a" is still valid [can be freed] */
return MP_MEM;
}
/* reallocation succeeded so set a->dp */
a->dp = tmp;
/* zero excess digits */
i = a->alloc;
a->alloc = size;
for (; i < a->alloc; i++) {
a->dp[i] = 0;
}
}
return MP_OKAY;
}
/* init a new mp_int */
int mp_init (mp_int * a)
{
int i;
/* allocate memory required and clear it */
a->dp = malloc (sizeof (mp_digit) * MP_PREC);
if (a->dp == NULL) {
return MP_MEM;
}
/* set the digits to zero */
for (i = 0; i < MP_PREC; i++) {
a->dp[i] = 0;
}
/* set the used to zero, allocated digits to the default precision
* and sign to positive */
a->used = 0;
a->alloc = MP_PREC;
a->sign = MP_ZPOS;
return MP_OKAY;
}
/* creates "a" then copies b into it */
int mp_init_copy (mp_int * a, const mp_int * b)
{
@ -2051,33 +2086,6 @@ int mp_init_multi(mp_int *mp, ...)
return res; /* Assumed ok, if error flagged above. */
}
/* init an mp_init for a given size */
int mp_init_size (mp_int * a, int size)
{
int x;
/* pad size so there are always extra digits */
size += (MP_PREC * 2) - (size % MP_PREC);
/* alloc mem */
a->dp = malloc (sizeof (mp_digit) * size);
if (a->dp == NULL) {
return MP_MEM;
}
/* set the members */
a->used = 0;
a->alloc = size;
a->sign = MP_ZPOS;
/* zero the digits */
for (x = 0; x < size; x++) {
a->dp[x] = 0;
}
return MP_OKAY;
}
/* hac 14.61, pp608 */
int mp_invmod (const mp_int * a, mp_int * b, mp_int * c)
{
@ -3850,15 +3858,6 @@ mp_unsigned_bin_size (const mp_int * a)
return (size / 8 + ((size & 7) != 0 ? 1 : 0));
}
/* set to zero */
void
mp_zero (mp_int * a)
{
a->sign = MP_ZPOS;
a->used = 0;
memset (a->dp, 0, sizeof (mp_digit) * a->alloc);
}
/* reverse an array, used for radix code */
static void
bn_reverse (unsigned char *s, int len)

19
dlls/rsaenh/tomcrypt.h
View File

@ -235,39 +235,20 @@ typedef int ltm_prime_callback(unsigned char *dst, int len, void *dat);
/* error code to char* string */
char *mp_error_to_string(int code);
/* ---> init and deinit bignum functions <--- */
/* init a bignum */
int mp_init(mp_int *a);
/* free a bignum */
void mp_clear(mp_int *a);
/* init a null terminated series of arguments */
int mp_init_multi(mp_int *mp, ...);
/* clear a null terminated series of arguments */
void mp_clear_multi(mp_int *mp, ...);
/* exchange two ints */
void mp_exch(mp_int *a, mp_int *b);
/* shrink ram required for a bignum */
int mp_shrink(mp_int *a);
/* grow an int to a given size */
int mp_grow(mp_int *a, int size);
/* init to a given number of digits */
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)
/* set to zero */
void mp_zero(mp_int *a);
/* set to a digit */
void mp_set(mp_int *a, mp_digit b);