mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-12 10:39:00 +00:00
124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "common.h"
|
|
#include <stdio.h>
|
|
#include "bitmaps.h"
|
|
#include "firmware/usb.h"
|
|
#include "hmac_drbg.h"
|
|
#include "layout.h"
|
|
#include "oled.h"
|
|
#include "rng.h"
|
|
#include "util.h"
|
|
|
|
uint8_t HW_ENTROPY_DATA[HW_ENTROPY_LEN];
|
|
|
|
static HMAC_DRBG_CTX drbg_ctx;
|
|
|
|
void __attribute__((noreturn))
|
|
__fatal_error(const char *expr, const char *msg, const char *file, int line_num,
|
|
const char *func) {
|
|
const BITMAP *icon = &bmp_icon_error;
|
|
char line[128] = {0};
|
|
int y = icon->height + 3;
|
|
oledClear();
|
|
|
|
oledDrawBitmap(0, 0, icon);
|
|
oledDrawStringCenter(OLED_WIDTH / 2, (icon->height - FONT_HEIGHT) / 2 + 1,
|
|
"FATAL ERROR", FONT_STANDARD);
|
|
|
|
snprintf(line, sizeof(line), "Expr: %s", expr ? expr : "(null)");
|
|
oledDrawString(0, y, line, FONT_STANDARD);
|
|
y += FONT_HEIGHT + 1;
|
|
|
|
snprintf(line, sizeof(line), "Msg: %s", msg ? msg : "(null)");
|
|
oledDrawString(0, y, line, FONT_STANDARD);
|
|
y += FONT_HEIGHT + 1;
|
|
|
|
const char *label = "File: ";
|
|
snprintf(line, sizeof(line), "%s:%d", file ? file : "(null)", line_num);
|
|
oledDrawStringRight(OLED_WIDTH - 1, y, line, FONT_STANDARD);
|
|
oledBox(0, y, oledStringWidth(label, FONT_STANDARD), y + FONT_HEIGHT, false);
|
|
oledDrawString(0, y, label, FONT_STANDARD);
|
|
y += FONT_HEIGHT + 1;
|
|
|
|
snprintf(line, sizeof(line), "Func: %s", func ? func : "(null)");
|
|
oledDrawString(0, y, line, FONT_STANDARD);
|
|
y += FONT_HEIGHT + 1;
|
|
|
|
oledDrawString(0, y, "Contact Trezor support.", FONT_STANDARD);
|
|
oledRefresh();
|
|
|
|
shutdown();
|
|
}
|
|
|
|
void __attribute__((noreturn))
|
|
error_shutdown(const char *line1, const char *line2, const char *line3,
|
|
const char *line4) {
|
|
layoutDialog(&bmp_icon_error, NULL, NULL, NULL, line1, line2, line3, line4,
|
|
"Please unplug", "the device.");
|
|
shutdown();
|
|
}
|
|
|
|
#ifndef NDEBUG
|
|
void __assert_func(const char *file, int line, const char *func,
|
|
const char *expr) {
|
|
__fatal_error(expr, "assert failed", file, line, func);
|
|
}
|
|
#endif
|
|
|
|
void hal_delay(uint32_t ms) { usbSleep(ms); }
|
|
|
|
void wait_random(void) {
|
|
int wait = random32() & 0xff;
|
|
volatile int i = 0;
|
|
volatile int j = wait;
|
|
while (i < wait) {
|
|
if (i + j != wait) {
|
|
shutdown();
|
|
}
|
|
++i;
|
|
--j;
|
|
}
|
|
// Double-check loop completion.
|
|
if (i != wait || j != 0) {
|
|
shutdown();
|
|
}
|
|
}
|
|
|
|
void drbg_init() {
|
|
uint8_t entropy[48] = {0};
|
|
random_buffer(entropy, sizeof(entropy));
|
|
hmac_drbg_init(&drbg_ctx, entropy, sizeof(entropy), NULL, 0);
|
|
}
|
|
|
|
void drbg_reseed(const uint8_t *entropy, size_t len) {
|
|
hmac_drbg_reseed(&drbg_ctx, entropy, len, NULL, 0);
|
|
}
|
|
|
|
void drbg_generate(uint8_t *buf, size_t len) {
|
|
hmac_drbg_generate(&drbg_ctx, buf, len);
|
|
}
|
|
|
|
uint32_t drbg_random32(void) {
|
|
uint32_t value = 0;
|
|
drbg_generate((uint8_t *)&value, sizeof(value));
|
|
return value;
|
|
}
|