1069 lines
32 KiB
C
1069 lines
32 KiB
C
/*
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* This file is part of the TREZOR project.
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*
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* Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "trezor.h"
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#include "fsm.h"
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#include "messages.h"
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#include "bip32.h"
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#include "storage.h"
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#include "coins.h"
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#include "debug.h"
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#include "transaction.h"
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#include "rng.h"
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#include "storage.h"
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#include "oled.h"
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#include "protect.h"
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#include "pinmatrix.h"
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#include "layout2.h"
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#include "ecdsa.h"
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#include "reset.h"
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#include "recovery.h"
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#include "memory.h"
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#include "usb.h"
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#include "util.h"
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#include "signing.h"
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#include "aes.h"
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#include "hmac.h"
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#include "crypto.h"
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#include "base58.h"
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#include "bip39.h"
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#include "ripemd160.h"
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#include "curves.h"
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#include "secp256k1.h"
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#include <libopencm3/stm32/flash.h>
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// message methods
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static uint8_t msg_resp[MSG_OUT_SIZE];
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#define RESP_INIT(TYPE) TYPE *resp = (TYPE *)msg_resp; \
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_Static_assert(sizeof(msg_resp) >= sizeof(TYPE), #TYPE " is too large"); \
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memset(resp, 0, sizeof(TYPE));
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void fsm_sendSuccess(const char *text)
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{
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RESP_INIT(Success);
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if (text) {
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resp->has_message = true;
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strlcpy(resp->message, text, sizeof(resp->message));
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}
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msg_write(MessageType_MessageType_Success, resp);
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}
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void fsm_sendFailure(FailureType code, const char *text)
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{
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if (protectAbortedByInitialize) {
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fsm_msgInitialize((Initialize *)0);
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protectAbortedByInitialize = false;
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return;
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}
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RESP_INIT(Failure);
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resp->has_code = true;
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resp->code = code;
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if (text) {
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resp->has_message = true;
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strlcpy(resp->message, text, sizeof(resp->message));
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}
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msg_write(MessageType_MessageType_Failure, resp);
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}
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const CoinType *fsm_getCoin(const char *name)
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{
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const CoinType *coin = coinByName(name);
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if (!coin) {
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fsm_sendFailure(FailureType_Failure_Other, "Invalid coin name");
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layoutHome();
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return 0;
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}
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return coin;
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}
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const HDNode *fsm_getDerivedNode(const char *curve, uint32_t *address_n, size_t address_n_count)
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{
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static HDNode node;
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if (!storage_getRootNode(&node, curve, true)) {
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fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized or passphrase request cancelled or unsupported curve");
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layoutHome();
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return 0;
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}
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if (!address_n || address_n_count == 0) {
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return &node;
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}
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if (hdnode_private_ckd_cached(&node, address_n, address_n_count) == 0) {
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fsm_sendFailure(FailureType_Failure_Other, "Failed to derive private key");
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layoutHome();
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return 0;
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}
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return &node;
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}
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void fsm_msgInitialize(Initialize *msg)
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{
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(void)msg;
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recovery_abort();
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signing_abort();
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session_clear(false); // do not clear PIN
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layoutHome();
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fsm_msgGetFeatures(0);
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}
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void fsm_msgGetFeatures(GetFeatures *msg)
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{
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(void)msg;
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RESP_INIT(Features);
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resp->has_vendor = true; strlcpy(resp->vendor, "bitcointrezor.com", sizeof(resp->vendor));
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resp->has_major_version = true; resp->major_version = VERSION_MAJOR;
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resp->has_minor_version = true; resp->minor_version = VERSION_MINOR;
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resp->has_patch_version = true; resp->patch_version = VERSION_PATCH;
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resp->has_device_id = true; strlcpy(resp->device_id, storage_uuid_str, sizeof(resp->device_id));
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resp->has_pin_protection = true; resp->pin_protection = storage.has_pin;
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resp->has_passphrase_protection = true; resp->passphrase_protection = storage.has_passphrase_protection && storage.passphrase_protection;
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#ifdef SCM_REVISION
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int len = sizeof(SCM_REVISION) - 1;
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resp->has_revision = true; memcpy(resp->revision.bytes, SCM_REVISION, len); resp->revision.size = len;
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#endif
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resp->has_bootloader_hash = true; resp->bootloader_hash.size = memory_bootloader_hash(resp->bootloader_hash.bytes);
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if (storage.has_language) {
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resp->has_language = true;
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strlcpy(resp->language, storage.language, sizeof(resp->language));
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}
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if (storage.has_label) {
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resp->has_label = true;
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strlcpy(resp->label, storage.label, sizeof(resp->label));
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}
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resp->coins_count = COINS_COUNT;
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memcpy(resp->coins, coins, COINS_COUNT * sizeof(CoinType));
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resp->has_initialized = true; resp->initialized = storage_isInitialized();
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resp->has_imported = true; resp->imported = storage.has_imported && storage.imported;
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resp->has_pin_cached = true; resp->pin_cached = session_isPinCached();
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resp->has_passphrase_cached = true; resp->passphrase_cached = session_isPassphraseCached();
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msg_write(MessageType_MessageType_Features, resp);
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}
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void fsm_msgPing(Ping *msg)
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{
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RESP_INIT(Success);
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if (msg->has_button_protection && msg->button_protection) {
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "answer to ping?", NULL, NULL, NULL, NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Ping cancelled");
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layoutHome();
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return;
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}
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}
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if (msg->has_pin_protection && msg->pin_protection) {
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if (!protectPin(true)) {
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layoutHome();
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return;
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}
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}
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if (msg->has_passphrase_protection && msg->passphrase_protection) {
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if (!protectPassphrase()) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Ping cancelled");
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return;
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}
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}
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if (msg->has_message) {
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resp->has_message = true;
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memcpy(&(resp->message), &(msg->message), sizeof(resp->message));
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}
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msg_write(MessageType_MessageType_Success, resp);
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layoutHome();
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}
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void fsm_msgChangePin(ChangePin *msg)
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{
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bool removal = msg->has_remove && msg->remove;
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if (removal) {
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if (storage_hasPin()) {
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "remove current PIN?", NULL, NULL, NULL, NULL);
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} else {
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fsm_sendSuccess("PIN removed");
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return;
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}
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} else {
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if (storage_hasPin()) {
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "change current PIN?", NULL, NULL, NULL, NULL);
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} else {
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "set new PIN?", NULL, NULL, NULL, NULL);
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}
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}
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if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, removal ? "PIN removal cancelled" : "PIN change cancelled");
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layoutHome();
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return;
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}
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if (!protectPin(false)) {
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layoutHome();
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return;
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}
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if (removal) {
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storage_setPin(0);
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fsm_sendSuccess("PIN removed");
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} else {
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if (protectChangePin()) {
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fsm_sendSuccess("PIN changed");
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} else {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "PIN change failed");
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}
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}
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layoutHome();
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}
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void fsm_msgWipeDevice(WipeDevice *msg)
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{
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(void)msg;
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "wipe the device?", NULL, "All data will be lost.", NULL, NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_WipeDevice, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Wipe cancelled");
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layoutHome();
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return;
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}
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storage_reset();
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storage_reset_uuid();
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storage_commit();
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storage_clearPinArea();
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// the following does not work on Mac anyway :-/ Linux/Windows are fine, so it is not needed
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// usbReconnect(); // force re-enumeration because of the serial number change
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fsm_sendSuccess("Device wiped");
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layoutHome();
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}
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void fsm_msgFirmwareErase(FirmwareErase *msg)
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{
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(void)msg;
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fsm_sendFailure(FailureType_Failure_UnexpectedMessage, "Not in bootloader mode");
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}
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void fsm_msgFirmwareUpload(FirmwareUpload *msg)
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{
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(void)msg;
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fsm_sendFailure(FailureType_Failure_UnexpectedMessage, "Not in bootloader mode");
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}
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void fsm_msgGetEntropy(GetEntropy *msg)
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{
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "send entropy?", NULL, NULL, NULL, NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Entropy cancelled");
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layoutHome();
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return;
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}
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RESP_INIT(Entropy);
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uint32_t len = msg->size;
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if (len > 1024) {
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len = 1024;
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}
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resp->entropy.size = len;
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random_buffer(resp->entropy.bytes, len);
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msg_write(MessageType_MessageType_Entropy, resp);
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layoutHome();
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}
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void fsm_msgGetPublicKey(GetPublicKey *msg)
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{
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RESP_INIT(PublicKey);
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if (!storage_isInitialized()) {
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fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
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return;
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}
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if (!protectPin(true)) {
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layoutHome();
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return;
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}
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const char *curve = SECP256K1_NAME;
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if (msg->has_ecdsa_curve_name) {
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curve = msg->ecdsa_curve_name;
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}
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const HDNode *node = fsm_getDerivedNode(curve, msg->address_n, msg->address_n_count);
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if (!node) return;
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if (msg->has_show_display && msg->show_display) {
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layoutPublicKey(node->public_key);
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if (!protectButton(ButtonRequestType_ButtonRequest_PublicKey, true)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Show public key cancelled");
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layoutHome();
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return;
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}
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}
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resp->node.depth = node->depth;
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resp->node.fingerprint = node->fingerprint;
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resp->node.child_num = node->child_num;
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resp->node.chain_code.size = 32;
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memcpy(resp->node.chain_code.bytes, node->chain_code, 32);
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resp->node.has_private_key = false;
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resp->node.has_public_key = true;
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resp->node.public_key.size = 33;
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memcpy(resp->node.public_key.bytes, node->public_key, 33);
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resp->has_xpub = true;
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hdnode_serialize_public(node, resp->xpub, sizeof(resp->xpub));
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msg_write(MessageType_MessageType_PublicKey, resp);
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layoutHome();
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}
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void fsm_msgLoadDevice(LoadDevice *msg)
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{
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if (storage_isInitialized()) {
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fsm_sendFailure(FailureType_Failure_UnexpectedMessage, "Device is already initialized. Use Wipe first.");
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return;
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}
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layoutDialogSwipe(&bmp_icon_question, "Cancel", "I take the risk", NULL, "Loading private seed", "is not recommended.", "Continue only if you", "know what you are", "doing!", NULL);
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if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Load cancelled");
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layoutHome();
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return;
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}
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if (msg->has_mnemonic && !(msg->has_skip_checksum && msg->skip_checksum) ) {
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if (!mnemonic_check(msg->mnemonic)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "Mnemonic with wrong checksum provided");
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layoutHome();
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return;
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}
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}
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storage_loadDevice(msg);
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storage_commit();
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fsm_sendSuccess("Device loaded");
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layoutHome();
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}
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void fsm_msgResetDevice(ResetDevice *msg)
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{
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if (storage_isInitialized()) {
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fsm_sendFailure(FailureType_Failure_UnexpectedMessage, "Device is already initialized. Use Wipe first.");
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return;
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}
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reset_init(
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msg->has_display_random && msg->display_random,
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msg->has_strength ? msg->strength : 128,
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msg->has_passphrase_protection && msg->passphrase_protection,
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msg->has_pin_protection && msg->pin_protection,
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msg->has_language ? msg->language : 0,
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msg->has_label ? msg->label : 0
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);
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}
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void fsm_msgSignTx(SignTx *msg)
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{
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if (!storage_isInitialized()) {
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fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
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return;
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}
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if (msg->inputs_count < 1) {
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fsm_sendFailure(FailureType_Failure_Other, "Transaction must have at least one input");
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layoutHome();
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return;
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}
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if (msg->outputs_count < 1) {
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fsm_sendFailure(FailureType_Failure_Other, "Transaction must have at least one output");
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layoutHome();
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return;
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}
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if (!protectPin(true)) {
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layoutHome();
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return;
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}
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const CoinType *coin = fsm_getCoin(msg->coin_name);
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if (!coin) return;
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, 0, 0);
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if (!node) return;
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signing_init(msg->inputs_count, msg->outputs_count, coin, node, msg->version, msg->lock_time);
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}
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void fsm_msgCancel(Cancel *msg)
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{
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(void)msg;
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recovery_abort();
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signing_abort();
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}
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void fsm_msgTxAck(TxAck *msg)
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{
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if (msg->has_tx) {
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signing_txack(&(msg->tx));
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} else {
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fsm_sendFailure(FailureType_Failure_SyntaxError, "No transaction provided");
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}
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}
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void fsm_msgCipherKeyValue(CipherKeyValue *msg)
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{
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if (!storage_isInitialized()) {
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fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
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return;
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}
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if (!msg->has_key) {
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fsm_sendFailure(FailureType_Failure_SyntaxError, "No key provided");
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return;
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}
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if (!msg->has_value) {
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fsm_sendFailure(FailureType_Failure_SyntaxError, "No value provided");
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return;
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}
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if (msg->value.size % 16) {
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fsm_sendFailure(FailureType_Failure_SyntaxError, "Value length must be a multiple of 16");
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return;
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}
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if (!protectPin(true)) {
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layoutHome();
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return;
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}
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const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n, msg->address_n_count);
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if (!node) return;
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bool encrypt = msg->has_encrypt && msg->encrypt;
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bool ask_on_encrypt = msg->has_ask_on_encrypt && msg->ask_on_encrypt;
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bool ask_on_decrypt = msg->has_ask_on_decrypt && msg->ask_on_decrypt;
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if ((encrypt && ask_on_encrypt) || (!encrypt && ask_on_decrypt)) {
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layoutCipherKeyValue(encrypt, msg->key);
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if (!protectButton(ButtonRequestType_ButtonRequest_Other, false)) {
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fsm_sendFailure(FailureType_Failure_ActionCancelled, "CipherKeyValue cancelled");
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layoutHome();
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return;
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}
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}
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uint8_t data[256 + 4];
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strlcpy((char *)data, msg->key, sizeof(data));
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strlcat((char *)data, ask_on_encrypt ? "E1" : "E0", sizeof(data));
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strlcat((char *)data, ask_on_decrypt ? "D1" : "D0", sizeof(data));
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hmac_sha512(node->private_key, 32, data, strlen((char *)data), data);
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RESP_INIT(CipheredKeyValue);
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if (encrypt) {
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aes_encrypt_ctx ctx;
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aes_encrypt_key256(data, &ctx);
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aes_cbc_encrypt(msg->value.bytes, resp->value.bytes, msg->value.size, ((msg->iv.size == 16) ? (msg->iv.bytes) : (data + 32)), &ctx);
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} else {
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aes_decrypt_ctx ctx;
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aes_decrypt_key256(data, &ctx);
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aes_cbc_decrypt(msg->value.bytes, resp->value.bytes, msg->value.size, ((msg->iv.size == 16) ? (msg->iv.bytes) : (data + 32)), &ctx);
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}
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resp->has_value = true;
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resp->value.size = msg->value.size;
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msg_write(MessageType_MessageType_CipheredKeyValue, resp);
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layoutHome();
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}
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void fsm_msgClearSession(ClearSession *msg)
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{
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(void)msg;
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session_clear(true); // clear PIN as well
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layoutScreensaver();
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fsm_sendSuccess("Session cleared");
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}
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|
|
void fsm_msgApplySettings(ApplySettings *msg)
|
|
{
|
|
if (msg->has_label) {
|
|
layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "change label to", msg->label, "?", NULL, NULL);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Apply settings cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
}
|
|
if (msg->has_language) {
|
|
layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "change language to", msg->language, "?", NULL, NULL);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Apply settings cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
}
|
|
if (msg->has_use_passphrase) {
|
|
layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", msg->use_passphrase ? "enable passphrase" : "disable passphrase", "encryption?", NULL, NULL, NULL);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Apply settings cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
}
|
|
if (msg->has_homescreen) {
|
|
layoutDialogSwipe(&bmp_icon_question, "Cancel", "Confirm", NULL, "Do you really want to", "change the home", "screen ?", NULL, NULL, NULL);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Apply settings cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
}
|
|
if (!msg->has_label && !msg->has_language && !msg->has_use_passphrase && !msg->has_homescreen) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No setting provided");
|
|
return;
|
|
}
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
if (msg->has_label) {
|
|
storage_setLabel(msg->label);
|
|
}
|
|
if (msg->has_language) {
|
|
storage_setLanguage(msg->language);
|
|
}
|
|
if (msg->has_use_passphrase) {
|
|
storage_setPassphraseProtection(msg->use_passphrase);
|
|
}
|
|
if (msg->has_homescreen) {
|
|
storage_setHomescreen(msg->homescreen.bytes, msg->homescreen.size);
|
|
}
|
|
storage_commit();
|
|
fsm_sendSuccess("Settings applied");
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgGetAddress(GetAddress *msg)
|
|
{
|
|
RESP_INIT(Address);
|
|
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
const CoinType *coin = fsm_getCoin(msg->coin_name);
|
|
if (!coin) return;
|
|
const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n, msg->address_n_count);
|
|
if (!node) return;
|
|
|
|
if (msg->has_multisig) {
|
|
layoutProgressSwipe("Preparing", 0);
|
|
if (cryptoMultisigPubkeyIndex(&(msg->multisig), node->public_key) < 0) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Pubkey not found in multisig script");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
uint8_t buf[32];
|
|
if (compile_script_multisig_hash(&(msg->multisig), buf) == 0) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Invalid multisig script");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
ripemd160(buf, 32, buf + 1);
|
|
buf[0] = coin->address_type_p2sh; // multisig cointype
|
|
base58_encode_check(buf, 21, resp->address, sizeof(resp->address));
|
|
} else {
|
|
ecdsa_get_address(node->public_key, coin->address_type, resp->address, sizeof(resp->address));
|
|
}
|
|
|
|
if (msg->has_show_display && msg->show_display) {
|
|
char desc[16];
|
|
if (msg->has_multisig) {
|
|
strlcpy(desc, "Msig __ of __:", sizeof(desc));
|
|
const uint32_t m = msg->multisig.m;
|
|
const uint32_t n = msg->multisig.pubkeys_count;
|
|
desc[5] = (m < 10) ? ' ': ('0' + (m / 10));
|
|
desc[6] = '0' + (m % 10);
|
|
desc[11] = (n < 10) ? ' ': ('0' + (n / 10));
|
|
desc[12] = '0' + (n % 10);
|
|
} else {
|
|
strlcpy(desc, "Address:", sizeof(desc));
|
|
}
|
|
layoutAddress(resp->address, desc);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_Address, true)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Show address cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
}
|
|
|
|
msg_write(MessageType_MessageType_Address, resp);
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgEntropyAck(EntropyAck *msg)
|
|
{
|
|
if (msg->has_entropy) {
|
|
reset_entropy(msg->entropy.bytes, msg->entropy.size);
|
|
} else {
|
|
reset_entropy(0, 0);
|
|
}
|
|
}
|
|
|
|
void fsm_msgSignMessage(SignMessage *msg)
|
|
{
|
|
RESP_INIT(MessageSignature);
|
|
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
|
|
layoutSignMessage(msg->message.bytes, msg->message.size);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Sign message cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
const CoinType *coin = fsm_getCoin(msg->coin_name);
|
|
if (!coin) return;
|
|
const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n, msg->address_n_count);
|
|
if (!node) return;
|
|
|
|
layoutProgressSwipe("Signing", 0);
|
|
if (cryptoMessageSign(coin, node, msg->message.bytes, msg->message.size, resp->signature.bytes) == 0) {
|
|
resp->has_address = true;
|
|
uint8_t addr_raw[21];
|
|
ecdsa_get_address_raw(node->public_key, coin->address_type, addr_raw);
|
|
base58_encode_check(addr_raw, 21, resp->address, sizeof(resp->address));
|
|
resp->has_signature = true;
|
|
resp->signature.size = 65;
|
|
msg_write(MessageType_MessageType_MessageSignature, resp);
|
|
} else {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Error signing message");
|
|
}
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgVerifyMessage(VerifyMessage *msg)
|
|
{
|
|
if (!msg->has_address) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "No address provided");
|
|
return;
|
|
}
|
|
if (!msg->has_message) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "No message provided");
|
|
return;
|
|
}
|
|
const CoinType *coin = fsm_getCoin(msg->coin_name);
|
|
if (!coin) return;
|
|
layoutProgressSwipe("Verifying", 0);
|
|
uint8_t addr_raw[21];
|
|
if (!ecdsa_address_decode(msg->address, addr_raw)) {
|
|
fsm_sendFailure(FailureType_Failure_InvalidSignature, "Invalid address");
|
|
}
|
|
if (msg->signature.size == 65 && cryptoMessageVerify(coin, msg->message.bytes, msg->message.size, addr_raw, msg->signature.bytes) == 0) {
|
|
layoutVerifyAddress(msg->address);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_Other, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Message verification cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
layoutVerifyMessage(msg->message.bytes, msg->message.size);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_Other, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Message verification cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
fsm_sendSuccess("Message verified");
|
|
} else {
|
|
fsm_sendFailure(FailureType_Failure_InvalidSignature, "Invalid signature");
|
|
}
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgSignIdentity(SignIdentity *msg)
|
|
{
|
|
RESP_INIT(SignedIdentity);
|
|
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
|
|
layoutSignIdentity(&(msg->identity), msg->has_challenge_visual ? msg->challenge_visual : 0);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Sign identity cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
uint8_t hash[32];
|
|
if (!msg->has_identity || cryptoIdentityFingerprint(&(msg->identity), hash) == 0) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Invalid identity");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
uint32_t address_n[5];
|
|
address_n[0] = 0x80000000 | 13;
|
|
address_n[1] = 0x80000000 | hash[ 0] | (hash[ 1] << 8) | (hash[ 2] << 16) | (hash[ 3] << 24);
|
|
address_n[2] = 0x80000000 | hash[ 4] | (hash[ 5] << 8) | (hash[ 6] << 16) | (hash[ 7] << 24);
|
|
address_n[3] = 0x80000000 | hash[ 8] | (hash[ 9] << 8) | (hash[10] << 16) | (hash[11] << 24);
|
|
address_n[4] = 0x80000000 | hash[12] | (hash[13] << 8) | (hash[14] << 16) | (hash[15] << 24);
|
|
|
|
const char *curve = SECP256K1_NAME;
|
|
if (msg->has_ecdsa_curve_name) {
|
|
curve = msg->ecdsa_curve_name;
|
|
}
|
|
const HDNode *node = fsm_getDerivedNode(curve, address_n, 5);
|
|
if (!node) return;
|
|
|
|
bool sign_ssh = msg->identity.has_proto && (strcmp(msg->identity.proto, "ssh") == 0);
|
|
bool sign_gpg = msg->identity.has_proto && (strcmp(msg->identity.proto, "gpg") == 0);
|
|
|
|
int result = 0;
|
|
layoutProgressSwipe("Signing", 0);
|
|
if (sign_ssh) { // SSH does not sign visual challenge
|
|
result = sshMessageSign(node, msg->challenge_hidden.bytes, msg->challenge_hidden.size, resp->signature.bytes);
|
|
} else if (sign_gpg) { // GPG should sign a message digest
|
|
result = gpgMessageSign(node, msg->challenge_hidden.bytes, msg->challenge_hidden.size, resp->signature.bytes);
|
|
} else {
|
|
uint8_t digest[64];
|
|
sha256_Raw(msg->challenge_hidden.bytes, msg->challenge_hidden.size, digest);
|
|
sha256_Raw((const uint8_t *)msg->challenge_visual, strlen(msg->challenge_visual), digest + 32);
|
|
result = cryptoMessageSign(&(coins[0]), node, digest, 64, resp->signature.bytes);
|
|
}
|
|
|
|
if (result == 0) {
|
|
if (strcmp(curve, SECP256K1_NAME) != 0) {
|
|
resp->has_address = false;
|
|
} else {
|
|
resp->has_address = true;
|
|
uint8_t addr_raw[21];
|
|
ecdsa_get_address_raw(node->public_key, 0x00, addr_raw); // hardcoded Bitcoin address type
|
|
base58_encode_check(addr_raw, 21, resp->address, sizeof(resp->address));
|
|
}
|
|
resp->has_public_key = true;
|
|
resp->public_key.size = 33;
|
|
memcpy(resp->public_key.bytes, node->public_key, 33);
|
|
resp->has_signature = true;
|
|
resp->signature.size = 65;
|
|
msg_write(MessageType_MessageType_SignedIdentity, resp);
|
|
} else {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Error signing identity");
|
|
}
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgGetECDHSessionKey(GetECDHSessionKey *msg)
|
|
{
|
|
RESP_INIT(ECDHSessionKey);
|
|
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
uint8_t hash[32];
|
|
if (!msg->has_identity || cryptoIdentityFingerprint(&(msg->identity), hash) == 0) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Invalid identity");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
|
|
uint32_t address_n[5];
|
|
address_n[0] = 0x80000000 | 17;
|
|
address_n[1] = 0x80000000 | hash[ 0] | (hash[ 1] << 8) | (hash[ 2] << 16) | (hash[ 3] << 24);
|
|
address_n[2] = 0x80000000 | hash[ 4] | (hash[ 5] << 8) | (hash[ 6] << 16) | (hash[ 7] << 24);
|
|
address_n[3] = 0x80000000 | hash[ 8] | (hash[ 9] << 8) | (hash[10] << 16) | (hash[11] << 24);
|
|
address_n[4] = 0x80000000 | hash[12] | (hash[13] << 8) | (hash[14] << 16) | (hash[15] << 24);
|
|
|
|
const char *curve = SECP256K1_NAME;
|
|
if (msg->has_ecdsa_curve_name) {
|
|
curve = msg->ecdsa_curve_name;
|
|
}
|
|
|
|
const HDNode *node = fsm_getDerivedNode(curve, address_n, 5);
|
|
if (!node) return;
|
|
|
|
if (cryptoGetECDHSessionKey(node, msg->peer_public_key.bytes, resp->session_key.bytes) == 0) {
|
|
resp->has_session_key = true;
|
|
resp->session_key.size = 65;
|
|
msg_write(MessageType_MessageType_ECDHSessionKey, resp);
|
|
} else {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Error getting ECDH session key");
|
|
}
|
|
layoutHome();
|
|
}
|
|
|
|
/* ECIES disabled
|
|
void fsm_msgEncryptMessage(EncryptMessage *msg)
|
|
{
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
if (!msg->has_pubkey) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No public key provided");
|
|
return;
|
|
}
|
|
if (!msg->has_message) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No message provided");
|
|
return;
|
|
}
|
|
curve_point pubkey;
|
|
if (msg->pubkey.size != 33 || ecdsa_read_pubkey(&secp256k1, msg->pubkey.bytes, &pubkey) == 0) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "Invalid public key provided");
|
|
return;
|
|
}
|
|
bool display_only = msg->has_display_only && msg->display_only;
|
|
bool signing = msg->address_n_count > 0;
|
|
RESP_INIT(EncryptedMessage);
|
|
const CoinType *coin = 0;
|
|
const HDNode *node = 0;
|
|
uint8_t address_raw[21];
|
|
if (signing) {
|
|
coin = coinByName(msg->coin_name);
|
|
if (!coin) {
|
|
fsm_sendFailure(FailureType_Failure_Other, "Invalid coin name");
|
|
return;
|
|
}
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n, msg->address_n_count);
|
|
if (!node) return;
|
|
uint8_t public_key[33];
|
|
ecdsa_get_public_key33(&secp256k1, node->private_key, public_key);
|
|
ecdsa_get_address_raw(public_key, coin->address_type, address_raw);
|
|
}
|
|
layoutEncryptMessage(msg->message.bytes, msg->message.size, signing);
|
|
if (!protectButton(ButtonRequestType_ButtonRequest_ProtectCall, false)) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Encrypt message cancelled");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
layoutProgressSwipe("Encrypting", 0);
|
|
if (cryptoMessageEncrypt(&pubkey, msg->message.bytes, msg->message.size, display_only, resp->nonce.bytes, &(resp->nonce.size), resp->message.bytes, &(resp->message.size), resp->hmac.bytes, &(resp->hmac.size), signing ? node->private_key : 0, signing ? address_raw : 0) != 0) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Error encrypting message");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
resp->has_nonce = true;
|
|
resp->has_message = true;
|
|
resp->has_hmac = true;
|
|
msg_write(MessageType_MessageType_EncryptedMessage, resp);
|
|
layoutHome();
|
|
}
|
|
|
|
void fsm_msgDecryptMessage(DecryptMessage *msg)
|
|
{
|
|
if (!storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_NotInitialized, "Device not initialized");
|
|
return;
|
|
}
|
|
if (!msg->has_nonce) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No nonce provided");
|
|
return;
|
|
}
|
|
if (!msg->has_message) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No message provided");
|
|
return;
|
|
}
|
|
if (!msg->has_hmac) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "No message hmac provided");
|
|
return;
|
|
}
|
|
curve_point nonce_pubkey;
|
|
if (msg->nonce.size != 33 || ecdsa_read_pubkey(&secp256k1, msg->nonce.bytes, &nonce_pubkey) == 0) {
|
|
fsm_sendFailure(FailureType_Failure_SyntaxError, "Invalid nonce provided");
|
|
return;
|
|
}
|
|
if (!protectPin(true)) {
|
|
layoutHome();
|
|
return;
|
|
}
|
|
const HDNode *node = fsm_getDerivedNode(SECP256K1_NAME, msg->address_n, msg->address_n_count);
|
|
if (!node) return;
|
|
|
|
layoutProgressSwipe("Decrypting", 0);
|
|
RESP_INIT(DecryptedMessage);
|
|
bool display_only = false;
|
|
bool signing = false;
|
|
uint8_t address_raw[21];
|
|
if (cryptoMessageDecrypt(&nonce_pubkey, msg->message.bytes, msg->message.size, msg->hmac.bytes, msg->hmac.size, node->private_key, resp->message.bytes, &(resp->message.size), &display_only, &signing, address_raw) != 0) {
|
|
fsm_sendFailure(FailureType_Failure_ActionCancelled, "Error decrypting message");
|
|
layoutHome();
|
|
return;
|
|
}
|
|
if (signing) {
|
|
base58_encode_check(address_raw, 21, resp->address, sizeof(resp->address));
|
|
}
|
|
layoutDecryptMessage(resp->message.bytes, resp->message.size, signing ? resp->address : 0);
|
|
protectButton(ButtonRequestType_ButtonRequest_Other, true);
|
|
if (display_only) {
|
|
resp->has_address = false;
|
|
resp->has_message = false;
|
|
memset(resp->address, 0, sizeof(resp->address));
|
|
memset(&(resp->message), 0, sizeof(resp->message));
|
|
} else {
|
|
resp->has_address = signing;
|
|
resp->has_message = true;
|
|
}
|
|
msg_write(MessageType_MessageType_DecryptedMessage, resp);
|
|
layoutHome();
|
|
}
|
|
*/
|
|
|
|
void fsm_msgEstimateTxSize(EstimateTxSize *msg)
|
|
{
|
|
RESP_INIT(TxSize);
|
|
resp->has_tx_size = true;
|
|
resp->tx_size = transactionEstimateSize(msg->inputs_count, msg->outputs_count);
|
|
msg_write(MessageType_MessageType_TxSize, resp);
|
|
}
|
|
|
|
void fsm_msgRecoveryDevice(RecoveryDevice *msg)
|
|
{
|
|
if (storage_isInitialized()) {
|
|
fsm_sendFailure(FailureType_Failure_UnexpectedMessage, "Device is already initialized. Use Wipe first.");
|
|
return;
|
|
}
|
|
recovery_init(
|
|
msg->has_word_count ? msg->word_count : 12,
|
|
msg->has_passphrase_protection && msg->passphrase_protection,
|
|
msg->has_pin_protection && msg->pin_protection,
|
|
msg->has_language ? msg->language : 0,
|
|
msg->has_label ? msg->label : 0,
|
|
msg->has_enforce_wordlist ? msg->enforce_wordlist : false
|
|
);
|
|
}
|
|
|
|
void fsm_msgWordAck(WordAck *msg)
|
|
{
|
|
recovery_word(msg->word);
|
|
}
|
|
|
|
void fsm_msgSetU2FCounter(SetU2FCounter *msg)
|
|
{
|
|
storage_setU2FCounter(msg->u2f_counter);
|
|
fsm_sendSuccess("U2F counter set");
|
|
}
|
|
|
|
#if DEBUG_LINK
|
|
|
|
void fsm_msgDebugLinkGetState(DebugLinkGetState *msg)
|
|
{
|
|
(void)msg;
|
|
RESP_INIT(DebugLinkState);
|
|
|
|
resp->has_layout = true;
|
|
resp->layout.size = OLED_BUFSIZE;
|
|
memcpy(resp->layout.bytes, oledGetBuffer(), OLED_BUFSIZE);
|
|
|
|
if (storage.has_pin) {
|
|
resp->has_pin = true;
|
|
strlcpy(resp->pin, storage.pin, sizeof(resp->pin));
|
|
}
|
|
|
|
resp->has_matrix = true;
|
|
strlcpy(resp->matrix, pinmatrix_get(), sizeof(resp->matrix));
|
|
|
|
resp->has_reset_entropy = true;
|
|
resp->reset_entropy.size = reset_get_int_entropy(resp->reset_entropy.bytes);
|
|
|
|
resp->has_reset_word = true;
|
|
strlcpy(resp->reset_word, reset_get_word(), sizeof(resp->reset_word));
|
|
|
|
resp->has_recovery_fake_word = true;
|
|
strlcpy(resp->recovery_fake_word, recovery_get_fake_word(), sizeof(resp->recovery_fake_word));
|
|
|
|
resp->has_recovery_word_pos = true;
|
|
resp->recovery_word_pos = recovery_get_word_pos();
|
|
|
|
if (storage.has_mnemonic) {
|
|
resp->has_mnemonic = true;
|
|
strlcpy(resp->mnemonic, storage.mnemonic, sizeof(resp->mnemonic));
|
|
}
|
|
|
|
if (storage.has_node) {
|
|
resp->has_node = true;
|
|
memcpy(&(resp->node), &(storage.node), sizeof(HDNode));
|
|
}
|
|
|
|
resp->has_passphrase_protection = true;
|
|
resp->passphrase_protection = storage.has_passphrase_protection && storage.passphrase_protection;
|
|
|
|
msg_debug_write(MessageType_MessageType_DebugLinkState, resp);
|
|
}
|
|
|
|
void fsm_msgDebugLinkStop(DebugLinkStop *msg)
|
|
{
|
|
(void)msg;
|
|
}
|
|
|
|
void fsm_msgDebugLinkMemoryRead(DebugLinkMemoryRead *msg)
|
|
{
|
|
RESP_INIT(DebugLinkMemory);
|
|
|
|
uint32_t length = 1024;
|
|
if (msg->has_length && msg->length < length)
|
|
length = msg->length;
|
|
resp->has_memory = true;
|
|
memcpy(resp->memory.bytes, (void*) msg->address, length);
|
|
resp->memory.size = length;
|
|
msg_debug_write(MessageType_MessageType_DebugLinkMemory, resp);
|
|
}
|
|
|
|
void fsm_msgDebugLinkMemoryWrite(DebugLinkMemoryWrite *msg)
|
|
{
|
|
uint32_t length = msg->memory.size;
|
|
if (msg->flash) {
|
|
flash_clear_status_flags();
|
|
flash_unlock();
|
|
uint32_t* src = (uint32_t *) msg->memory.bytes;
|
|
for (unsigned int i = 0; i < length; i += 4) {
|
|
flash_program_word(msg->address + i, *src);
|
|
src++;
|
|
}
|
|
flash_lock();
|
|
} else {
|
|
memcpy((void *) msg->address, msg->memory.bytes, length);
|
|
}
|
|
}
|
|
|
|
void fsm_msgDebugLinkFlashErase(DebugLinkFlashErase *msg)
|
|
{
|
|
flash_clear_status_flags();
|
|
flash_unlock();
|
|
flash_erase_sector(msg->sector, FLASH_CR_PROGRAM_X32);
|
|
flash_lock();
|
|
}
|
|
#endif
|