grg/checkm8_tool
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

modify AES experiment to replicate bernstein

Browse Source
This commit is contained in:
Gregor Haas
2020-02-23 20:25:51 -05:00
parent 94fe326afb
commit db97653fc2
4 changed files with 222 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
c8_remote/lib/payload/src/aes_sw.c
View File

@@ -1,4 +1,5 @@
#include "bootrom_func.h"
#include "cacheutil.h"
PAYLOAD_SECTION
void sub_bytes(unsigned char block[16], unsigned char sbox[16][16])
@@ -145,19 +146,19 @@ uint64_t entry_sync(unsigned char *msg, unsigned int msg_len, unsigned char key[
unsigned char sbox[16][16], unsigned char rc_lookup[11],
unsigned char mul2[256], unsigned char mul3[256])
{
unsigned long long start = 0, end = 0;
unsigned long long start = 0;
// int i, j;
// for(i = 0; i < 256; i++)
// {
// for(j = 0; j < 4; j++)
// {
// clean_inv_l1_setway(i, j);
// }
// }
__asm__ volatile ("mrs %0, cntpct_el0" : "=r" (start));
start = get_ticks();
aes128_encrypt_ecb(msg, msg_len, key, sbox, rc_lookup, mul2, mul3);
__asm__ volatile ("mrs %0, cntpct_el0" : "=r" (end));
if(2 * end - start - 64 > 0)
{
timer_register_int(2 * end - start - 64);
wfi();
}
return end - start;
return get_ticks() - start;
}
PAYLOAD_SECTION