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Bugfixes and experiment update

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This commit is contained in:
Gregor Haas
2020-01-11 17:14:33 -05:00
parent 477d7079c8
commit 13b5c8abb0
3 changed files with 51 additions and 21 deletions
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40
c8_payloads/src/aes_sw.c
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@@ -1,6 +1,12 @@
#include "util.h"
#include "brfunc_timing.h"
PAYLOAD_SECTION
void task_sleep(unsigned int usec)
{
((BOOTROM_FUNC) ADDR_TASK_SLEEP)(usec);
}
PAYLOAD_SECTION
void sub_bytes(unsigned char block[16], unsigned char sbox[16][16])
{
@@ -133,6 +139,7 @@ void aes128_encrypt_ecb(unsigned char *msg, unsigned int msg_len, unsigned char
shift_rows(block);
mix_cols(block, mul2, mul3);
add_key(block, &key_sched[16 * (j + 1)]);
task_sleep(20);
}
sub_bytes(block, sbox);
@@ -146,10 +153,31 @@ unsigned int _start(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])
{
while(1)
{
aes128_encrypt_ecb(msg, msg_len, key, sbox, rc_lookup, mul2, mul3);
task_sleep(1000);
}
return 0xDEADBEEF;
unsigned long long start, end;
__asm__ volatile ("mrs %0, cntpct_el0" : "=r" (start));
aes128_encrypt_ecb(msg, msg_len, key, sbox, rc_lookup, mul2, mul3);
task_sleep(120);
__asm__ volatile ("mrs %0, cntpct_el0" : "=r" (end));
// for(i = 0; i < 256; i++)
// {
// __asm__ volatile ("dc civac, %0" : : "r" (&sbox[i % 16][i / 16]) : "memory");
// __asm__ volatile ("dc civac, %0" : : "r" (&mul2[i]) : "memory");
// __asm__ volatile ("dc civac, %0" : : "r" (&mul3[i]) : "memory");
// }
//
// for(i = 0; i < 16; i++)
// {
// __asm__ volatile ("dc civac, %0" : : "r" (&msg[i]) : "memory");
// __asm__ volatile ("dc civac, %0" : : "r" (&key[i]) : "memory");
// }
//
// for(i = 0; i < 12; i++)
// {
// __asm__ volatile ("dc civac, %0" : : "r" (&rc_lookup[i]) : "memory");
// }
//
// __asm__ volatile ("dsb sy");
return end - start;
}