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authorDenys Vlasenko <vda.linux@googlemail.com>2017-04-03 21:53:29 +0200
committerDenys Vlasenko <vda.linux@googlemail.com>2017-04-03 21:53:29 +0200
commit229d3c467d20bb776edbbb29517df84f09e1e46f (patch)
tree59809f057cc9c018109a26cab3dae3fbc20986bd
parent636c3b627cc964f65e5b38bb005d50f2841d6966 (diff)
downloadbusybox-229d3c467d20bb776edbbb29517df84f09e1e46f.tar.gz
tls: avoid using int16 in pstm code
function old new delta pstm_div 1472 1522 +50 psRsaEncryptPub 403 413 +10 pstm_2expt 91 96 +5 pstm_clear 68 72 +4 pstm_init 39 42 +3 pstm_unsigned_bin_size 36 37 +1 pstm_montgomery_reduce 398 399 +1 pstm_init_size 45 46 +1 pstm_zero 39 38 -1 pstm_set 35 34 -1 pstm_read_unsigned_bin 112 109 -3 pstm_mulmod 123 120 -3 pstm_mod 116 113 -3 pstm_cmp 57 54 -3 pstm_sub 107 102 -5 pstm_to_unsigned_bin 157 151 -6 pstm_clamp 63 57 -6 pstm_add 116 108 -8 pstm_grow 81 72 -9 pstm_count_bits 57 48 -9 pstm_init_copy 84 72 -12 pstm_cmp_mag 93 78 -15 pstm_sqr_comba 567 551 -16 pstm_montgomery_calc_normalization 158 140 -18 pstm_copy 115 92 -23 pstm_lshd 133 109 -24 pstm_mul_comba 525 500 -25 pstm_mul_d 251 224 -27 s_pstm_sub 256 228 -28 s_pstm_add 370 337 -33 pstm_div_2d 444 409 -35 pstm_mul_2 195 156 -39 pstm_rshd 154 104 -50 pstm_mul_2d 247 186 -61 pstm_exptmod 1524 1463 -61 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 8/27 up/down: 75/-524) Total: -449 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--networking/tls.c4
-rw-r--r--networking/tls_pstm.c76
-rw-r--r--networking/tls_pstm.h18
3 files changed, 49 insertions, 49 deletions
diff --git a/networking/tls.c b/networking/tls.c
index bbf2b158f..590c04ad9 100644
--- a/networking/tls.c
+++ b/networking/tls.c
@@ -475,7 +475,7 @@ static void prf_hmac_sha256(/*tls_state_t *tls,*/
uint8_t a[TLS_MAX_MAC_SIZE];
uint8_t *out_p = outbuf;
unsigned label_size = strlen(label);
- unsigned MAC_size = SHA256_OUTSIZE;///tls->MAC_size;
+ unsigned MAC_size = SHA256_OUTSIZE;
/* In P_hash() calculation, "seed" is "label + seed": */
#define SEED label, label_size, seed, seed_size
@@ -486,7 +486,7 @@ static void prf_hmac_sha256(/*tls_state_t *tls,*/
hmac_sha256(/*tls,*/ a, SECRET, SEED, NULL);
//TODO: convert hmac to precomputed
- for(;;) {
+ for (;;) {
/* HMAC_hash(secret, A(1) + seed) */
if (outbuf_size <= MAC_size) {
/* Last, possibly incomplete, block */
diff --git a/networking/tls_pstm.c b/networking/tls_pstm.c
index c39a2182d..bd5bae0b7 100644
--- a/networking/tls_pstm.c
+++ b/networking/tls_pstm.c
@@ -47,7 +47,7 @@
//#include "../cryptoApi.h"
#ifndef DISABLE_PSTM
-static int32 pstm_mul_2d(pstm_int *a, int16 b, pstm_int *c);
+static int32 pstm_mul_2d(pstm_int *a, int b, pstm_int *c); //bbox: was int16 b
/******************************************************************************/
/*
@@ -64,7 +64,7 @@ int32 pstm_init_size(psPool_t *pool, pstm_int * a, uint32 size)
a->dp = xzalloc(sizeof (pstm_digit) * size);//bbox
//bbox a->pool = pool;
a->used = 0;
- a->alloc = (int16)size;
+ a->alloc = size;
a->sign = PSTM_ZPOS;
/*
zero the digits
@@ -111,9 +111,9 @@ int32 pstm_init(psPool_t *pool, pstm_int * a)
/*
Grow as required
*/
-int32 pstm_grow(pstm_int * a, int16 size)
+int32 pstm_grow(pstm_int * a, int size)
{
- int16 i;
+ int i; //bbox: was int16
pstm_digit *tmp;
/*
@@ -298,7 +298,7 @@ void pstm_zero(pstm_int * a)
*/
int32 pstm_cmp_mag(pstm_int * a, pstm_int * b)
{
- int16 n;
+ int n; //bbox: was int16
pstm_digit *tmpa, *tmpb;
/*
@@ -406,7 +406,7 @@ int32 pstm_read_unsigned_bin(pstm_int *a, unsigned char *b, int32 c)
c -= excess;
b += excess;
}
- a->used = (int16)((c + sizeof(pstm_digit) - 1)/sizeof(pstm_digit));
+ a->used = ((c + sizeof(pstm_digit) - 1)/sizeof(pstm_digit));
if (a->alloc < a->used) {
if (pstm_grow(a, a->used) != PSTM_OKAY) {
return PSTM_MEM;
@@ -460,9 +460,9 @@ int32 pstm_read_unsigned_bin(pstm_int *a, unsigned char *b, int32 c)
/******************************************************************************/
/*
*/
-int16 pstm_count_bits (pstm_int * a)
+int pstm_count_bits (pstm_int * a)
{
- int16 r;
+ int r; //bbox: was int16
pstm_digit q;
if (a->used == 0) {
@@ -500,9 +500,9 @@ void pstm_set(pstm_int *a, pstm_digit b)
/*
Right shift
*/
-void pstm_rshd(pstm_int *a, int16 x)
+void pstm_rshd(pstm_int *a, int x)
{
- int16 y;
+ int y; //bbox: was int16
/* too many digits just zero and return */
if (x >= a->used) {
@@ -529,9 +529,9 @@ void pstm_rshd(pstm_int *a, int16 x)
/*
Shift left a certain amount of digits.
*/
-int32 pstm_lshd(pstm_int * a, int16 b)
+int32 pstm_lshd(pstm_int * a, int b)
{
- int16 x;
+ int x; //bbox: was int16
int32 res;
/*
@@ -582,9 +582,9 @@ int32 pstm_lshd(pstm_int * a, int16 b)
/*
computes a = 2**b
*/
-int32 pstm_2expt(pstm_int *a, int16 b)
+int32 pstm_2expt(pstm_int *a, int b)
{
- int16 z;
+ int z; //bbox: was int16
/* zero a as per default */
pstm_zero (a);
@@ -619,7 +619,7 @@ int32 pstm_2expt(pstm_int *a, int16 b)
int32 pstm_mul_2(pstm_int * a, pstm_int * b)
{
int32 res;
- int16 x, oldused;
+ int x, oldused; //bbox: was int16
/*
grow to accomodate result
@@ -684,7 +684,7 @@ int32 pstm_mul_2(pstm_int * a, pstm_int * b)
*/
int32 s_pstm_sub(pstm_int *a, pstm_int *b, pstm_int *c)
{
- int16 oldbused, oldused;
+ int oldbused, oldused; //bbox: was int16
int32 x;
pstm_word t;
@@ -724,7 +724,7 @@ int32 s_pstm_sub(pstm_int *a, pstm_int *b, pstm_int *c)
*/
static int32 s_pstm_add(pstm_int *a, pstm_int *b, pstm_int *c)
{
- int16 x, y, oldused;
+ int x, y, oldused; //bbox: was int16
register pstm_word t, adp, bdp;
y = a->used;
@@ -781,8 +781,8 @@ static int32 s_pstm_add(pstm_int *a, pstm_int *b, pstm_int *c)
*/
int32 pstm_sub(pstm_int *a, pstm_int *b, pstm_int *c)
{
- int32 res;
- int16 sa, sb;
+ int32 res;
+ int sa, sb; //bbox: was int16
sa = a->sign;
sb = b->sign;
@@ -881,7 +881,7 @@ int32 pstm_montgomery_setup(pstm_int *a, pstm_digit *rho)
int32 pstm_montgomery_calc_normalization(pstm_int *a, pstm_int *b)
{
int32 x;
- int16 bits;
+ int bits; //bbox: was int16
/* how many bits of last digit does b use */
bits = pstm_count_bits (b) % DIGIT_BIT;
@@ -916,10 +916,10 @@ int32 pstm_montgomery_calc_normalization(pstm_int *a, pstm_int *b)
/*
c = a * 2**d
*/
-static int32 pstm_mul_2d(pstm_int *a, int16 b, pstm_int *c)
+static int32 pstm_mul_2d(pstm_int *a, int b, pstm_int *c)
{
pstm_digit carry, carrytmp, shift;
- int16 x;
+ int x; //bbox: was int16
/* copy it */
if (pstm_copy(a, c) != PSTM_OKAY) {
@@ -961,9 +961,9 @@ static int32 pstm_mul_2d(pstm_int *a, int16 b, pstm_int *c)
/*
c = a mod 2**d
*/
-static int32 pstm_mod_2d(pstm_int *a, int16 b, pstm_int *c)
+static int32 pstm_mod_2d(pstm_int *a, int b, pstm_int *c) //bbox: was int16 b
{
- int16 x;
+ int x; //bbox: was int16
/* zero if count less than or equal to zero */
if (b <= 0) {
@@ -1001,7 +1001,7 @@ int32 pstm_mul_d(pstm_int *a, pstm_digit b, pstm_int *c)
{
pstm_word w;
int32 res;
- int16 x, oldused;
+ int x, oldused; //bbox: was int16
if (c->alloc < a->used + 1) {
if ((res = pstm_grow (c, a->used + 1)) != PSTM_OKAY) {
@@ -1032,12 +1032,12 @@ int32 pstm_mul_d(pstm_int *a, pstm_digit b, pstm_int *c)
/*
c = a / 2**b
*/
-int32 pstm_div_2d(psPool_t *pool, pstm_int *a, int16 b, pstm_int *c,
+int32 pstm_div_2d(psPool_t *pool, pstm_int *a, int b, pstm_int *c,
pstm_int *d)
{
pstm_digit D, r, rr;
int32 res;
- int16 x;
+ int x; //bbox: was int16
pstm_int t;
/* if the shift count is <= 0 then we do no work */
@@ -1120,7 +1120,7 @@ LBL_DONE:
*/
int32 pstm_div_2(pstm_int * a, pstm_int * b)
{
- int16 x, oldused;
+ int x, oldused; //bbox: was int16
if (b->alloc < a->used) {
if (pstm_grow(b, a->used) != PSTM_OKAY) {
@@ -1166,9 +1166,9 @@ int32 pstm_div_2(pstm_int * a, pstm_int * b)
/*
Creates "a" then copies b into it
*/
-int32 pstm_init_copy(psPool_t *pool, pstm_int * a, pstm_int * b, int16 toSqr)
+int32 pstm_init_copy(psPool_t *pool, pstm_int * a, pstm_int * b, int toSqr)
{
- int16 x;
+ int x; //bbox: was int16
int32 res;
if (a == b) {
@@ -1279,7 +1279,7 @@ int32 pstm_div(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
{
pstm_int q, x, y, t1, t2;
int32 res;
- int16 n, t, i, norm, neg;
+ int n, t, i, norm, neg; //bbox: was int16
/* is divisor zero ? */
if (pstm_iszero (b) == 1) {
@@ -1531,7 +1531,7 @@ int32 pstm_mulmod(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
pstm_int *d)
{
int32 res;
- int16 size;
+ int size; //bbox: was int16
pstm_int tmp;
/*
@@ -1567,7 +1567,7 @@ int32 pstm_exptmod(psPool_t *pool, pstm_int *G, pstm_int *X, pstm_int *P,
pstm_digit buf, mp;
pstm_digit *paD;
int32 err, bitbuf;
- int16 bitcpy, bitcnt, mode, digidx, x, y, winsize;
+ int bitcpy, bitcnt, mode, digidx, x, y, winsize; //bbox: was int16
uint32 paDlen;
/* set window size from what user set as optimization */
@@ -1804,7 +1804,7 @@ LBL_RES:pstm_clear(&res);
int32 pstm_add(pstm_int *a, pstm_int *b, pstm_int *c)
{
int32 res;
- int16 sa, sb;
+ int sa, sb; //bbox: was int16
/* get sign of both inputs */
sa = a->sign;
@@ -1817,7 +1817,7 @@ int32 pstm_add(pstm_int *a, pstm_int *b, pstm_int *c)
if ((res = s_pstm_add (a, b, c)) != PSTM_OKAY) {
return res;
}
- } else {
+ } else {
/*
one positive, the other negative
subtract the one with the greater magnitude from the one of the lesser
@@ -1842,7 +1842,7 @@ int32 pstm_add(pstm_int *a, pstm_int *b, pstm_int *c)
/*
reverse an array, used for radix code
*/
-static void pstm_reverse (unsigned char *s, int16 len)
+static void pstm_reverse (unsigned char *s, int len) //bbox: was int16 len
{
int32 ix, iy;
unsigned char t;
@@ -1865,7 +1865,7 @@ static void pstm_reverse (unsigned char *s, int16 len)
int32 pstm_to_unsigned_bin_nr(psPool_t *pool, pstm_int *a, unsigned char *b)
{
int32 res;
- int16 x;
+ int x; //bbox: was int16
pstm_int t = { 0 };
if ((res = pstm_init_copy(pool, &t, a, 0)) != PSTM_OKAY) {
@@ -1890,7 +1890,7 @@ int32 pstm_to_unsigned_bin_nr(psPool_t *pool, pstm_int *a, unsigned char *b)
int32 pstm_to_unsigned_bin(psPool_t *pool, pstm_int *a, unsigned char *b)
{
int32 res;
- int16 x;
+ int x; //bbox: was int16
pstm_int t = { 0 };
if ((res = pstm_init_copy(pool, &t, a, 0)) != PSTM_OKAY) {
diff --git a/networking/tls_pstm.h b/networking/tls_pstm.h
index 3a0fd8ce6..df705adce 100644
--- a/networking/tls_pstm.h
+++ b/networking/tls_pstm.h
@@ -122,7 +122,7 @@
#define PSTM_MAX_SIZE 4096
typedef struct {
- int16 used, alloc, sign;
+ int used, alloc, sign; //bbox: was int16
pstm_digit *dp;
//bbox psPool_t *pool;
} pstm_int;
@@ -154,9 +154,9 @@ extern int32 pstm_init_size(psPool_t *pool, pstm_int * a, uint32 size);
#define pstm_init_copy(pool, a, b, toSqr) \
pstm_init_copy( a, b, toSqr)
extern int32 pstm_init_copy(psPool_t *pool, pstm_int * a, pstm_int * b,
- int16 toSqr);
+ int toSqr); //bbox: was int16 toSqr
-extern int16 pstm_count_bits (pstm_int * a);
+extern int pstm_count_bits (pstm_int * a); //bbox: was returning int16
//bbox: pool unused
#define pstm_init_for_read_unsigned_bin(pool, a, len) \
@@ -178,7 +178,7 @@ extern void pstm_clear_multi(pstm_int *mp0, pstm_int *mp1, pstm_int *mp2,
pstm_int *mp3, pstm_int *mp4, pstm_int *mp5, pstm_int *mp6,
pstm_int *mp7);
-extern int32 pstm_grow(pstm_int * a, int16 size);
+extern int32 pstm_grow(pstm_int * a, int size); //bbox: was int16 size
extern void pstm_clamp(pstm_int * a);
@@ -186,9 +186,9 @@ extern int32 pstm_cmp(pstm_int * a, pstm_int * b);
extern int32 pstm_cmp_mag(pstm_int * a, pstm_int * b);
-extern void pstm_rshd(pstm_int *a, int16 x);
+extern void pstm_rshd(pstm_int *a, int x); //bbox: was int16 x
-extern int32 pstm_lshd(pstm_int * a, int16 b);
+extern int32 pstm_lshd(pstm_int * a, int b); //bbox: was int16 b
//bbox: pool unused
#define pstm_div(pool, a, b, c, d) \
@@ -199,8 +199,8 @@ extern int32 pstm_div(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
//bbox: pool unused
#define pstm_div_2d(pool, a, b, c, d) \
pstm_div_2d( a, b, c, d)
-extern int32 pstm_div_2d(psPool_t *pool, pstm_int *a, int16 b, pstm_int *c,
- pstm_int *d);
+extern int32 pstm_div_2d(psPool_t *pool, pstm_int *a, int b, pstm_int *c,
+ pstm_int *d); //bbox: was int16 b
extern int32 pstm_div_2(pstm_int * a, pstm_int * b);
@@ -232,7 +232,7 @@ extern int32 pstm_mulmod(psPool_t *pool, pstm_int *a, pstm_int *b, pstm_int *c,
extern int32 pstm_exptmod(psPool_t *pool, pstm_int *G, pstm_int *X, pstm_int *P,
pstm_int *Y);
-extern int32 pstm_2expt(pstm_int *a, int16 b);
+extern int32 pstm_2expt(pstm_int *a, int b); //bbox: was int16 b
extern int32 pstm_add(pstm_int *a, pstm_int *b, pstm_int *c);