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feat(storage): Synchronize Optiga and MCU PIN counters.

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This commit is contained in:
Andrew Kozlik 2023-10-02 20:25:49 +02:00
parent cb21ca8dc5
commit 90f2b1d790
1 changed files with 24 additions and 3 deletions
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27
storage/storage.c
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@ -1523,11 +1523,32 @@ uint32_t storage_get_pin_rem(void) {
return 0;
}
uint32_t ctr = 0;
if (sectrue != pin_get_fails(&ctr)) {
uint32_t ctr_mcu = 0;
if (sectrue != pin_get_fails(&ctr_mcu)) {
return 0;
}
return PIN_MAX_TRIES - ctr;
#if USE_OPTIGA
// Synchronize counters in case they diverged.
uint32_t ctr_optiga = 0;
ensure(
optiga_pin_get_fails(&ctr_optiga) == OPTIGA_SUCCESS ? sectrue : secfalse,
"optiga_pin_get_fails failed");
while (ctr_mcu < ctr_optiga) {
storage_pin_fails_increase();
ctr_mcu++;
}
if (ctr_optiga < ctr_mcu) {
ensure(optiga_pin_fails_increase(ctr_mcu - ctr_optiga) == OPTIGA_SUCCESS
? sectrue
: secfalse,
"optiga_pin_fails_increase failed");
}
#endif
return PIN_MAX_TRIES - ctr_mcu;
}
secbool storage_change_pin(const uint8_t *oldpin, size_t oldpin_len,