tls: code shrink P256 code
function old new delta
sp_256_to_bin 148 120 -28
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/networking/tls_sp_c32.c b/networking/tls_sp_c32.c
index 73dae6c..353dacd 100644
--- a/networking/tls_sp_c32.c
+++ b/networking/tls_sp_c32.c
@@ -70,6 +70,16 @@
#define p256_mp_mod ((sp_digit)0x000001)
+/* Normalize the values in each word to 26 bits. */
+static void sp_256_norm_10(sp_digit* a)
+{
+ int i;
+ for (i = 0; i < 9; i++) {
+ a[i+1] += a[i] >> 26;
+ a[i] &= 0x3ffffff;
+ }
+}
+
/* Write r as big endian to byte aray.
* Fixed length number of bytes written: 32
*
@@ -80,10 +90,8 @@
{
int i, j, s = 0, b;
- for (i = 0; i < 9; i++) {
- r[i+1] += r[i] >> 26;
- r[i] &= 0x3ffffff;
- }
+ sp_256_norm_10(r);
+
j = 256 / 8 - 1;
a[j] = 0;
for (i = 0; i < 10 && j >= 0; i++) {
@@ -171,16 +179,6 @@
return sp_256_cmp_10(a, b) == 0;
}
-/* Normalize the values in each word to 26 bits. */
-static void sp_256_norm_10(sp_digit* a)
-{
- int i;
- for (i = 0; i < 9; i++) {
- a[i+1] += a[i] >> 26;
- a[i] &= 0x3ffffff;
- }
-}
-
/* Add b to a into r. (r = a + b) */
static void sp_256_add_10(sp_digit* r, const sp_digit* a, const sp_digit* b)
{