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aes.c: use uint8_t for array of pow and log to save RAM

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Signed-off-by: Yanray Wang <yanray.wang@arm.com>
This commit is contained in:
Yanray Wang 2023-06-26 16:54:52 +08:00
parent 717a83164e
commit 5c86b1775a
1 changed files with 4 additions and 4 deletions
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8
library/aes.c
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@ -365,15 +365,15 @@ static int aes_init_done = 0;
static void aes_gen_tables(void) static void aes_gen_tables(void)
{ {
int i, x, y, z; int i, x, y, z;
int pow[256]; uint8_t pow[256];
int log[256]; uint8_t log[256];
/* /*
* compute pow and log tables over GF(2^8) * compute pow and log tables over GF(2^8)
*/ */
for (i = 0, x = 1; i < 256; i++) { for (i = 0, x = 1; i < 256; i++) {
pow[i] = x; pow[i] = (uint8_t) x;
log[x] = i; log[x] = (uint8_t) i;
x = MBEDTLS_BYTE_0(x ^ XTIME(x)); x = MBEDTLS_BYTE_0(x ^ XTIME(x));
} }