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EEPROM configuration

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This commit is contained in:
Mark Qvist 2019-02-08 13:18:49 +01:00
parent b3b1a9b253
commit 474f3ad4d2
13 changed files with 429 additions and 131 deletions
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50
hardware/Crypto.c
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@ -1,4 +1,5 @@
#include "Crypto.h"
#include "util/Config.h"
bool encryption_enabled = false;
uint8_t active_key[CRYPTO_KEY_SIZE];
@ -18,17 +19,39 @@ FRESULT crypto_fr; // Result codes
void crypto_init(void) {
encryption_enabled = false;
if (load_key()) {
if (load_entropy_index() && load_entropy()) {
encryption_enabled = true;
if (should_disable_enryption()) {
if (config_crypto_lock) config_crypto_lock_disable();
} else {
if (load_key()) {
if (load_entropy_index() && load_entropy()) {
config_crypto_lock_enable();
encryption_enabled = true;
}
}
if (config_crypto_lock) {
if (encryption_enabled) {
LED_indicate_enabled_crypto();
} else {
LED_indicate_error_crypto();
}
}
}
}
if (encryption_enabled) {
LED_indicate_enabled_crypto();
} else {
LED_indicate_error_crypto();
bool crypto_wait(void) {
size_t wait_timer = 0;
size_t interval_ms = 100;
while (!crypto_enabled()) {
delay_ms(100);
wait_timer++;
sd_jobs();
if (wait_timer*interval_ms > CRYPTO_WAIT_TIMEOUT_MS) {
return false;
}
}
return true;
}
void crypto_generate_hmac(uint8_t *data, size_t length) {
@ -170,6 +193,19 @@ bool load_entropy(void) {
return false;
}
bool should_disable_enryption(void) {
if (sd_mounted()) {
crypto_fr = f_open(&crypto_fp, PATH_CRYPTO_DISABLE, FA_READ);
if (crypto_fr == FR_OK) {
f_close(&crypto_fp);
return true;
}
}
return false;
}
bool load_key(void) {
if (sd_mounted()) {
crypto_fr = f_open(&crypto_fp, PATH_AES_128_KEY, FA_READ);