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device_ledger.cpp
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// Copyright (c) 2017-2019, The Monero Project
// Copyright (c) 2018, The Loki Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
#include "version.h"
#include "device_ledger.hpp"
#include "ringct/rctOps.h"
#include "cryptonote_basic/account.h"
#include "cryptonote_basic/subaddress_index.h"
#include "cryptonote_core/cryptonote_tx_utils.h"
#include "common/lock.h"
namespace hw {
namespace ledger {
#ifdef WITH_DEVICE_LEDGER
#undef LOKI_DEFAULT_LOG_CATEGORY
#define LOKI_DEFAULT_LOG_CATEGORY "device.ledger"
/* ===================================================================== */
/* === Debug ==== */
/* ===================================================================== */
void set_apdu_verbose(bool verbose) {
apdu_verbose = verbose;
}
#define TRACKD MTRACE("hw")
#define ASSERT_SW(sw,ok,msk) CHECK_AND_ASSERT_THROW_MES(((sw)&(mask))==(ok), \
"Wrong Device Status: " << "0x" << std::hex << (sw) << " (" << Status::to_string(sw) << "), " << \
"EXPECTED 0x" << std::hex << (ok) << " (" << Status::to_string(ok) << "), " << \
"MASK 0x" << std::hex << (mask));
#define ASSERT_T0(exp) CHECK_AND_ASSERT_THROW_MES(exp, "Protocol assert failure: "#exp ) ;
#define ASSERT_X(exp,msg) CHECK_AND_ASSERT_THROW_MES(exp, msg);
#ifdef DEBUG_HWDEVICE
crypto::secret_key dbg_viewkey;
crypto::secret_key dbg_spendkey;
#endif
struct Status
{
unsigned int code;
const char *string;
constexpr operator unsigned int() const
{
return this->code;
}
static const char *to_string(unsigned int code);
};
// Must be sorted in ascending order by the code
#define LEDGER_STATUS(status) {status, #status}
constexpr Status status_codes[] = {
LEDGER_STATUS(SW_BYTES_REMAINING_00),
LEDGER_STATUS(SW_WARNING_STATE_UNCHANGED),
LEDGER_STATUS(SW_STATE_TERMINATED),
LEDGER_STATUS(SW_MORE_DATA_AVAILABLE),
LEDGER_STATUS(SW_WRONG_LENGTH),
LEDGER_STATUS(SW_LOGICAL_CHANNEL_NOT_SUPPORTED),
LEDGER_STATUS(SW_SECURE_MESSAGING_NOT_SUPPORTED),
LEDGER_STATUS(SW_LAST_COMMAND_EXPECTED),
LEDGER_STATUS(SW_COMMAND_CHAINING_NOT_SUPPORTED),
LEDGER_STATUS(SW_SECURITY_LOAD_KEY),
LEDGER_STATUS(SW_SECURITY_COMMITMENT_CONTROL),
LEDGER_STATUS(SW_SECURITY_AMOUNT_CHAIN_CONTROL),
LEDGER_STATUS(SW_SECURITY_COMMITMENT_CHAIN_CONTROL),
LEDGER_STATUS(SW_SECURITY_OUTKEYS_CHAIN_CONTROL),
LEDGER_STATUS(SW_SECURITY_MAXOUTPUT_REACHED),
LEDGER_STATUS(SW_SECURITY_TRUSTED_INPUT),
LEDGER_STATUS(SW_CLIENT_NOT_SUPPORTED),
LEDGER_STATUS(SW_SECURITY_STATUS_NOT_SATISFIED),
LEDGER_STATUS(SW_FILE_INVALID),
LEDGER_STATUS(SW_PIN_BLOCKED),
LEDGER_STATUS(SW_DATA_INVALID),
LEDGER_STATUS(SW_CONDITIONS_NOT_SATISFIED),
LEDGER_STATUS(SW_COMMAND_NOT_ALLOWED),
LEDGER_STATUS(SW_APPLET_SELECT_FAILED),
LEDGER_STATUS(SW_WRONG_DATA),
LEDGER_STATUS(SW_FUNC_NOT_SUPPORTED),
LEDGER_STATUS(SW_FILE_NOT_FOUND),
LEDGER_STATUS(SW_RECORD_NOT_FOUND),
LEDGER_STATUS(SW_FILE_FULL),
LEDGER_STATUS(SW_INCORRECT_P1P2),
LEDGER_STATUS(SW_REFERENCED_DATA_NOT_FOUND),
LEDGER_STATUS(SW_WRONG_P1P2),
LEDGER_STATUS(SW_CORRECT_LENGTH_00),
LEDGER_STATUS(SW_INS_NOT_SUPPORTED),
LEDGER_STATUS(SW_CLA_NOT_SUPPORTED),
LEDGER_STATUS(SW_UNKNOWN),
LEDGER_STATUS(SW_OK),
LEDGER_STATUS(SW_ALGORITHM_UNSUPPORTED)
};
const char *Status::to_string(unsigned int code)
{
constexpr size_t status_codes_size = sizeof(status_codes) / sizeof(status_codes[0]);
constexpr const Status *status_codes_end = &status_codes[status_codes_size];
const Status *item = std::lower_bound(&status_codes[0], status_codes_end, code);
return (item == status_codes_end || code < *item) ? "UNKNOWN" : item->string;
}
/* ===================================================================== */
/* === hmacmap ==== */
/* ===================================================================== */
SecHMAC::SecHMAC(const uint8_t s[32], const uint8_t h[32]) {
memcpy(this->sec, s, 32);
memcpy(this->hmac, h, 32);
}
void HMACmap::find_mac(const uint8_t sec[32], uint8_t hmac[32]) {
size_t sz = hmacs.size();
log_hexbuffer("find_mac: lookup for ", (char*)sec,32);
for (size_t i=0; i<sz; i++) {
log_hexbuffer("find_mac: - try ",(char*)hmacs[i].sec,32);
if (memcmp(sec, hmacs[i].sec, 32) == 0) {
memcpy(hmac, hmacs[i].hmac, 32);
log_hexbuffer("find_mac: - found ",(char*)hmacs[i].hmac,32);
return;
}
}
throw std::runtime_error("Protocol error: try to send untrusted secret");
}
void HMACmap::add_mac(const uint8_t sec[32], const uint8_t hmac[32]) {
log_hexbuffer("add_mac: sec ", (char*)sec,32);
log_hexbuffer("add_mac: hmac ", (char*)hmac,32);
hmacs.push_back(SecHMAC(sec,hmac));
}
void HMACmap::clear() {
hmacs.clear();
}
/* ===================================================================== */
/* === Keymap ==== */
/* ===================================================================== */
ABPkeys::ABPkeys(const rct::key& A, const rct::key& B, const bool is_subaddr, const bool is_change, const bool need_additional_txkeys, const size_t real_output_index, const rct::key& P, const rct::key& AK) {
Aout = A;
Bout = B;
is_subaddress = is_subaddr;
is_change_address = is_change;
additional_key = need_additional_txkeys;
index = real_output_index;
Pout = P;
AKout = AK;
}
ABPkeys::ABPkeys(const ABPkeys& keys) {
Aout = keys.Aout;
Bout = keys.Bout;
is_subaddress = keys.is_subaddress;
is_change_address = keys.is_change_address;
additional_key = keys.additional_key;
index = keys.index;
Pout = keys.Pout;
AKout = keys.AKout;
}
ABPkeys &ABPkeys::operator=(const ABPkeys& keys) {
if (&keys == this)
return *this;
Aout = keys.Aout;
Bout = keys.Bout;
is_subaddress = keys.is_subaddress;
is_change_address = keys.is_change_address;
additional_key = keys.additional_key;
index = keys.index;
Pout = keys.Pout;
AKout = keys.AKout;
return *this;
}
bool Keymap::find(const rct::key& P, ABPkeys& keys) const {
size_t sz = ABP.size();
for (size_t i=0; i<sz; i++) {
if (ABP[i].Pout == P) {
keys = ABP[i];
return true;
}
}
return false;
}
void Keymap::add(const ABPkeys& keys) {
ABP.push_back(keys);
}
void Keymap::clear() {
ABP.clear();
}
#ifdef DEBUG_HWDEVICE
void Keymap::log() {
log_message("keymap", "content");
size_t sz = ABP.size();
for (size_t i=0; i<sz; i++) {
log_message(" keymap", std::to_string(i));
log_hexbuffer(" Aout", (char*)ABP[i].Aout.bytes, 32);
log_hexbuffer(" Bout", (char*)ABP[i].Bout.bytes, 32);
log_message (" is_sub", std::to_string(ABP[i].is_subaddress));
log_message (" index", std::to_string(ABP[i].index));
log_hexbuffer(" Pout", (char*)ABP[i].Pout.bytes, 32);
}
}
#endif
/* ===================================================================== */
/* === Internal Helpers ==== */
/* ===================================================================== */
static bool is_fake_view_key(const crypto::secret_key &sec) {
return sec == crypto::null_skey;
}
bool operator==(const crypto::key_derivation &d0, const crypto::key_derivation &d1) {
static_assert(sizeof(crypto::key_derivation) == 32, "key_derivation must be 32 bytes");
return !crypto_verify_32((const unsigned char*)&d0, (const unsigned char*)&d1);
}
/* ===================================================================== */
/* === Device ==== */
/* ===================================================================== */
static int device_id = 0;
#define PROTOCOL_VERSION 3
#define INS_NONE 0x00
#define INS_RESET 0x02
#define INS_GET_KEY 0x20
#define INS_DISPLAY_ADDRESS 0x21
#define INS_PUT_KEY 0x22
#define INS_GET_CHACHA8_PREKEY 0x24
#define INS_VERIFY_KEY 0x26
#define INS_MANAGE_SEEDWORDS 0x28
#define INS_SECRET_KEY_TO_PUBLIC_KEY 0x30
#define INS_GEN_KEY_DERIVATION 0x32
#define INS_DERIVATION_TO_SCALAR 0x34
#define INS_DERIVE_PUBLIC_KEY 0x36
#define INS_DERIVE_SECRET_KEY 0x38
#define INS_GEN_KEY_IMAGE 0x3A
#define INS_SECRET_KEY_ADD 0x3C
#define INS_SECRET_KEY_SUB 0x3E
#define INS_GENERATE_KEYPAIR 0x40
#define INS_SECRET_SCAL_MUL_KEY 0x42
#define INS_SECRET_SCAL_MUL_BASE 0x44
#define INS_DERIVE_SUBADDRESS_PUBLIC_KEY 0x46
#define INS_GET_SUBADDRESS 0x48
#define INS_GET_SUBADDRESS_SPEND_PUBLIC_KEY 0x4A
#define INS_GET_SUBADDRESS_SECRET_KEY 0x4C
#define INS_OPEN_TX 0x70
#define INS_SET_SIGNATURE_MODE 0x72
#define INS_GET_ADDITIONAL_KEY 0x74
#define INS_STEALTH 0x76
#define INS_GEN_COMMITMENT_MASK 0x77
#define INS_BLIND 0x78
#define INS_UNBLIND 0x7A
#define INS_GEN_TXOUT_KEYS 0x7B
#define INS_PREFIX_HASH 0x7D
#define INS_VALIDATE 0x7C
#define INS_MLSAG 0x7E
#define INS_CLSAG 0x7F
#define INS_CLOSE_TX 0x80
#define INS_GET_TX_PROOF 0xA0
#define INS_GET_RESPONSE 0xc0
device_ledger::device_ledger(): hw_device(0x0101, 0x05, 64, 2000) {
this->id = device_id++;
this->reset_buffer();
this->mode = NONE;
this->has_view_key = false;
this->tx_in_progress = false;
MDEBUG( "Device "<<this->id <<" Created");
}
device_ledger::~device_ledger() {
this->release();
MDEBUG( "Device "<<this->id <<" Destroyed");
}
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
//lock the device for a long sequence
void device_ledger::lock(void) {
MDEBUG( "Ask for LOCKING for device "<<this->name << " in thread ");
device_locker.lock();
MDEBUG( "Device "<<this->name << " LOCKed");
}
//lock the device for a long sequence
bool device_ledger::try_lock(void) {
MDEBUG( "Ask for LOCKING(try) for device "<<this->name << " in thread ");
bool r = device_locker.try_lock();
if (r) {
MDEBUG( "Device "<<this->name << " LOCKed(try)");
} else {
MDEBUG( "Device "<<this->name << " not LOCKed(try)");
}
return r;
}
//lock the device for a long sequence
void device_ledger::unlock(void) {
try {
MDEBUG( "Ask for UNLOCKING for device "<<this->name << " in thread ");
} catch (...) {
}
device_locker.unlock();
MDEBUG( "Device "<<this->name << " UNLOCKed");
}
/* ======================================================================= */
/* IO */
/* ======================================================================= */
#define IO_SW_DENY 0x6982
#define IO_SECRET_KEY 0x02
void device_ledger::logCMD() {
if (apdu_verbose) {
char strbuffer[1024];
snprintf(strbuffer, sizeof(strbuffer), "%.02x %.02x %.02x %.02x %.02x ",
this->buffer_send[0],
this->buffer_send[1],
this->buffer_send[2],
this->buffer_send[3],
this->buffer_send[4]
);
const size_t len = strlen(strbuffer);
buffer_to_str(strbuffer+len, sizeof(strbuffer)-len, (char*)(this->buffer_send+5), this->length_send-5);
MDEBUG( "CMD : " << strbuffer);
}
}
void device_ledger::logRESP() {
if (apdu_verbose) {
char strbuffer[1024];
snprintf(strbuffer, sizeof(strbuffer), "%.04x ", this->sw);
const size_t len = strlen(strbuffer);
buffer_to_str(strbuffer+len, sizeof(strbuffer)-len, (char*)(this->buffer_recv), this->length_recv);
MDEBUG( "RESP : " << strbuffer);
}
}
int device_ledger::set_command_header(unsigned char ins, unsigned char p1, unsigned char p2) {
reset_buffer();
this->buffer_send[0] = PROTOCOL_VERSION;
this->buffer_send[1] = ins;
this->buffer_send[2] = p1;
this->buffer_send[3] = p2;
this->buffer_send[4] = 0x00;
return 5;
}
int device_ledger::set_command_header_noopt(unsigned char ins, unsigned char p1, unsigned char p2) {
int offset = set_command_header(ins, p1, p2);
//options
this->buffer_send[offset++] = 0;
this->buffer_send[4] = offset - 5;
return offset;
}
void device_ledger::send_simple(unsigned char ins, unsigned char p1) {
this->length_send = set_command_header_noopt(ins, p1);
if (ins == INS_GET_KEY && p1 == IO_SECRET_KEY) {
// export view key user input
this->exchange_wait_on_input();
} else {
this->exchange();
}
}
void device_ledger::send_secret(const unsigned char sec[32], int &offset) {
MDEBUG("send_secret: " << this->tx_in_progress);
ASSERT_X(offset + 32 <= BUFFER_SEND_SIZE, "send_secret: out of bounds write (secret)");
memmove(this->buffer_send+offset, sec, 32);
offset +=32;
if (this->tx_in_progress) {
ASSERT_X(offset + 32 <= BUFFER_SEND_SIZE, "send_secret: out of bounds write (mac)");
this->hmac_map.find_mac((uint8_t*)sec, this->buffer_send+offset);
offset += 32;
}
}
void device_ledger::receive_secret(unsigned char sec[32], int &offset) {
MDEBUG("receive_secret: " << this->tx_in_progress);
ASSERT_X(offset + 32 <= BUFFER_RECV_SIZE, "receive_secret: out of bounds read (secret)");
memmove(sec, this->buffer_recv+offset, 32);
offset += 32;
if (this->tx_in_progress) {
ASSERT_X(offset + 32 <= BUFFER_RECV_SIZE, "receive_secret: out of bounds read (mac)");
this->hmac_map.add_mac((uint8_t*)sec, this->buffer_recv+offset);
offset += 32;
}
}
bool device_ledger::reset() {
reset_buffer();
int offset = set_command_header_noopt(INS_RESET);
const size_t verlen = strlen(LOKI_VERSION_STR);
ASSERT_X(offset + verlen <= BUFFER_SEND_SIZE, "LOKI_VERSION_STR is too long")
memmove(this->buffer_send+offset, LOKI_VERSION_STR, verlen);
offset += strlen(LOKI_VERSION_STR);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
ASSERT_X(this->length_recv>=3, "Communication error, less than three bytes received. Check your application version.");
unsigned int device_version = 0;
device_version = VERSION(this->buffer_recv[0], this->buffer_recv[1], this->buffer_recv[2]);
ASSERT_X (device_version >= MINIMAL_APP_VERSION,
"Unsupported device application version: " << VERSION_MAJOR(device_version)<<"."<<VERSION_MINOR(device_version)<<"."<<VERSION_MICRO(device_version) <<
" At least " << MINIMAL_APP_VERSION_MAJOR<<"."<<MINIMAL_APP_VERSION_MINOR<<"."<<MINIMAL_APP_VERSION_MICRO<<" is required.");
return true;
}
unsigned int device_ledger::exchange(unsigned int ok, unsigned int mask) {
logCMD();
this->length_recv = hw_device.exchange(this->buffer_send, this->length_send, this->buffer_recv, BUFFER_SEND_SIZE, false);
ASSERT_X(this->length_recv>=2, "Communication error, less than tow bytes received");
this->length_recv -= 2;
this->sw = (this->buffer_recv[length_recv]<<8) | this->buffer_recv[length_recv+1];
logRESP();
ASSERT_SW(this->sw,ok,msk);
return this->sw;
}
unsigned int device_ledger::exchange_wait_on_input(unsigned int ok, unsigned int mask) {
logCMD();
unsigned int deny = 0;
this->length_recv = hw_device.exchange(this->buffer_send, this->length_send, this->buffer_recv, BUFFER_SEND_SIZE, true);
ASSERT_X(this->length_recv>=2, "Communication error, less than two bytes received");
this->length_recv -= 2;
this->sw = (this->buffer_recv[length_recv]<<8) | this->buffer_recv[length_recv+1];
if (this->sw == IO_SW_DENY) {
// cancel on device
deny = 1;
} else {
ASSERT_SW(this->sw,ok,msk);
}
logRESP();
return deny;
}
void device_ledger::reset_buffer() {
this->length_send = 0;
memset(this->buffer_send, 0, BUFFER_SEND_SIZE);
this->length_recv = 0;
memset(this->buffer_recv, 0, BUFFER_RECV_SIZE);
}
/* ======================================================================= */
/* SETUP/TEARDOWN */
/* ======================================================================= */
bool device_ledger::set_name(const std::string & name) {
this->name = name;
return true;
}
const std::string device_ledger::get_name() const {
if (!this->connected()) {
return std::string("<disconnected:").append(this->name).append(">");
}
return this->name;
}
bool device_ledger::init(void) {
#ifdef DEBUG_HWDEVICE
this->controle_device = &hw::get_device("default");
#endif
this->release();
hw_device.init();
MDEBUG( "Device "<<this->id <<" HIDUSB inited");
return true;
}
static const std::vector<hw::io::hid_conn_params> known_devices {
{0x2c97, 0x0001, 0, 0xffa0},
{0x2c97, 0x0004, 0, 0xffa0},
};
bool device_ledger::connect(void) {
this->disconnect();
hw_device.connect(known_devices);
this->reset();
#ifdef DEBUG_HWDEVICE
cryptonote::account_public_address pubkey;
this->get_public_address(pubkey);
#endif
crypto::secret_key vkey;
crypto::secret_key skey;
this->get_secret_keys(vkey,skey);
return true;
}
bool device_ledger::connected(void) const {
return hw_device.connected();
}
bool device_ledger::disconnect() {
hw_device.disconnect();
return true;
}
bool device_ledger::release() {
this->disconnect();
hw_device.release();
return true;
}
bool device_ledger::set_mode(device_mode mode) {
auto locks = tools::unique_locks(device_locker, command_locker);
int offset;
switch(mode) {
case TRANSACTION_CREATE_REAL:
case TRANSACTION_CREATE_FAKE:
offset = set_command_header_noopt(INS_SET_SIGNATURE_MODE, 1);
//account
this->buffer_send[offset] = mode;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
this->mode = mode;
break;
case TRANSACTION_PARSE:
case NONE:
this->mode = mode;
break;
default:
CHECK_AND_ASSERT_THROW_MES(false, " device_ledger::set_mode(unsigned int mode): invalid mode: "<<mode);
}
MDEBUG("Switch to mode: " <<mode);
return device::set_mode(mode);
}
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */
bool device_ledger::get_public_address(cryptonote::account_public_address &pubkey){
auto locks = tools::unique_locks(device_locker, command_locker);
send_simple(INS_GET_KEY, 1);
memmove(pubkey.m_view_public_key.data, this->buffer_recv, 32);
memmove(pubkey.m_spend_public_key.data, this->buffer_recv+32, 32);
return true;
}
bool device_ledger::get_secret_keys(crypto::secret_key &vkey , crypto::secret_key &skey) {
auto locks = tools::unique_locks(device_locker, command_locker);
//secret key are represented as fake key on the wallet side
memset(vkey.data, 0x00, 32);
memset(skey.data, 0xFF, 32);
//spcialkey, normal conf handled in decrypt
send_simple(INS_GET_KEY, 0x02);
//View key is retrievied, if allowed, to speed up blockchain parsing
memmove(this->viewkey.data, this->buffer_recv+0, 32);
if (is_fake_view_key(this->viewkey)) {
MDEBUG("Have Not view key");
this->has_view_key = false;
} else {
MDEBUG("Have view key");
this->has_view_key = true;
}
#ifdef DEBUG_HWDEVICE
send_simple(INS_GET_KEY, 0x04);
memmove(dbg_viewkey.data, this->buffer_recv+0, 32);
memmove(dbg_spendkey.data, this->buffer_recv+32, 32);
#endif
return true;
}
bool device_ledger::generate_chacha_key(const cryptonote::account_keys &keys, crypto::chacha_key &key, uint64_t kdf_rounds) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
crypto::chacha_key key_x;
cryptonote::account_keys keys_x = hw::ledger::decrypt(keys);
this->controle_device->generate_chacha_key(keys_x, key_x, kdf_rounds);
#endif
send_simple(INS_GET_CHACHA8_PREKEY);
char prekey[200];
memmove(prekey, &this->buffer_recv[0], 200);
crypto::generate_chacha_key_prehashed(&prekey[0], sizeof(prekey), key, kdf_rounds);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("generate_chacha_key_prehashed", "key", (char*)key_x.data(), (char*)key.data());
#endif
return true;
}
void device_ledger::display_address(const cryptonote::subaddress_index& index, const std::optional<crypto::hash8> &payment_id) {
auto locks = tools::unique_locks(device_locker, command_locker);
int offset = set_command_header_noopt(INS_DISPLAY_ADDRESS, payment_id?1:0);
//index
memmove(this->buffer_send+offset, &index, sizeof(cryptonote::subaddress_index));
offset +=8 ;
//payment ID
if (payment_id) {
memmove(this->buffer_send+offset, (*payment_id).data, 8);
} else {
memset(this->buffer_send+offset, 0, 8);
}
offset +=8;
this->buffer_send[4] = offset-5;
this->length_send = offset;
CHECK_AND_ASSERT_THROW_MES(this->exchange_wait_on_input() == 0, "Timeout/Error on display address.");
}
/* ======================================================================= */
/* SUB ADDRESS */
/* ======================================================================= */
bool device_ledger::derive_subaddress_public_key(const crypto::public_key &pub, const crypto::key_derivation &derivation, const std::size_t output_index, crypto::public_key &derived_pub){
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::public_key pub_x = pub;
crypto::key_derivation derivation_x;
if ((this->mode == TRANSACTION_PARSE) && has_view_key) {
derivation_x = derivation;
} else {
derivation_x = hw::ledger::decrypt(derivation);
}
const std::size_t output_index_x = output_index;
crypto::public_key derived_pub_x;
log_hexbuffer("derive_subaddress_public_key: [[IN]] pub ", pub_x.data, 32);
log_hexbuffer("derive_subaddress_public_key: [[IN]] derivation", derivation_x.data, 32);
log_message ("derive_subaddress_public_key: [[IN]] index ", std::to_string((int)output_index_x));
this->controle_device->derive_subaddress_public_key(pub_x, derivation_x,output_index_x,derived_pub_x);
log_hexbuffer("derive_subaddress_public_key: [[OUT]] derived_pub", derived_pub_x.data, 32);
#endif
if ((this->mode == TRANSACTION_PARSE) && has_view_key) {
//If we are in TRANSACTION_PARSE, the given derivation has been retrieved uncrypted (wihtout the help
//of the device), so continue that way.
MDEBUG( "derive_subaddress_public_key : PARSE mode with known viewkey");
crypto::derive_subaddress_public_key(pub, derivation, output_index,derived_pub);
} else {
int offset = set_command_header_noopt(INS_DERIVE_SUBADDRESS_PUBLIC_KEY);
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//derivation
this->send_secret((unsigned char*)derivation.data, offset);
//index
this->buffer_send[offset+0] = output_index>>24;
this->buffer_send[offset+1] = output_index>>16;
this->buffer_send[offset+2] = output_index>>8;
this->buffer_send[offset+3] = output_index>>0;
offset += 4;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(derived_pub.data, &this->buffer_recv[0], 32);
}
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("derive_subaddress_public_key", "derived_pub", derived_pub_x.data, derived_pub.data);
#endif
return true;
}
crypto::public_key device_ledger::get_subaddress_spend_public_key(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index) {
auto locks = tools::unique_locks(device_locker, command_locker);
crypto::public_key D;
#ifdef DEBUG_HWDEVICE
const cryptonote::account_keys keys_x = hw::ledger::decrypt(keys);
const cryptonote::subaddress_index index_x = index;
crypto::public_key D_x;
log_hexbuffer("get_subaddress_spend_public_key: [[IN]] keys.m_view_secret_key ", keys_x.m_view_secret_key.data,32);
log_hexbuffer("get_subaddress_spend_public_key: [[IN]] keys.m_spend_secret_key", keys_x.m_spend_secret_key.data,32);
log_message ("get_subaddress_spend_public_key: [[IN]] index ", std::to_string(index_x.major)+"."+std::to_string(index_x.minor));
D_x = this->controle_device->get_subaddress_spend_public_key(keys_x, index_x);
log_hexbuffer("get_subaddress_spend_public_key: [[OUT]] derivation ", D_x.data, 32);
#endif
if (index.is_zero()) {
D = keys.m_account_address.m_spend_public_key;
} else {
int offset = set_command_header_noopt(INS_GET_SUBADDRESS_SPEND_PUBLIC_KEY);
//index
static_assert(sizeof(cryptonote::subaddress_index) == 8, "cryptonote::subaddress_index shall be 8 bytes length");
memmove(this->buffer_send+offset, &index, sizeof(cryptonote::subaddress_index));
offset +=8 ;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(D.data, &this->buffer_recv[0], 32);
}
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("get_subaddress_spend_public_key", "D", D_x.data, D.data);
#endif
return D;
}
std::vector<crypto::public_key> device_ledger::get_subaddress_spend_public_keys(const cryptonote::account_keys &keys, uint32_t account, uint32_t begin, uint32_t end) {
std::vector<crypto::public_key> pkeys;
cryptonote::subaddress_index index = {account, begin};
crypto::public_key D;
for (uint32_t idx = begin; idx < end; ++idx) {
index.minor = idx;
D = this->get_subaddress_spend_public_key(keys, index);
pkeys.push_back(D);
}
return pkeys;
}
cryptonote::account_public_address device_ledger::get_subaddress(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index) {
auto locks = tools::unique_locks(device_locker, command_locker);
cryptonote::account_public_address address;
#ifdef DEBUG_HWDEVICE
const cryptonote::account_keys keys_x = hw::ledger::decrypt(keys);
const cryptonote::subaddress_index index_x = index;
cryptonote::account_public_address address_x;
log_hexbuffer("get_subaddress: [[IN]] keys.m_view_secret_key ", keys_x.m_view_secret_key.data, 32);
log_hexbuffer("get_subaddress: [[IN]] keys.m_view_public_key", keys_x.m_account_address.m_view_public_key.data, 32);
log_hexbuffer("get_subaddress: [[IN]] keys.m_view_secret_key ", keys_x.m_view_secret_key.data, 32);
log_hexbuffer("get_subaddress: [[IN]] keys.m_spend_public_key", keys_x.m_account_address.m_spend_public_key.data, 32);
log_message ("get_subaddress: [[IN]] index ", std::to_string(index_x.major)+"."+std::to_string(index_x.minor));
address_x = this->controle_device->get_subaddress(keys_x, index_x);
log_hexbuffer("get_subaddress: [[OUT]] keys.m_view_public_key ", address_x.m_view_public_key.data, 32);
log_hexbuffer("get_subaddress: [[OUT]] keys.m_spend_public_key", address_x.m_spend_public_key.data, 32);
#endif
if (index.is_zero()) {
address = keys.m_account_address;
} else {
int offset = set_command_header_noopt(INS_GET_SUBADDRESS);
//index
static_assert(sizeof(cryptonote::subaddress_index) == 8, "cryptonote::subaddress_index shall be 8 bytes length");
memmove(this->buffer_send+offset, &index, sizeof(cryptonote::subaddress_index));
offset +=8 ;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(address.m_view_public_key.data, &this->buffer_recv[0], 32);
memmove(address.m_spend_public_key.data, &this->buffer_recv[32], 32);
}
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("get_subaddress", "address.m_view_public_key.data", address_x.m_view_public_key.data, address.m_view_public_key.data);
hw::ledger::check32("get_subaddress", "address.m_spend_public_key.data", address_x.m_spend_public_key.data, address.m_spend_public_key.data);
#endif
return address;
}
crypto::secret_key device_ledger::get_subaddress_secret_key(const crypto::secret_key &sec, const cryptonote::subaddress_index &index) {
auto locks = tools::unique_locks(device_locker, command_locker);
crypto::secret_key sub_sec;
#ifdef DEBUG_HWDEVICE
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
const cryptonote::subaddress_index index_x = index;
crypto::secret_key sub_sec_x;
log_message ("get_subaddress_secret_key: [[IN]] index ", std::to_string(index.major)+"."+std::to_string(index.minor));
log_hexbuffer("get_subaddress_secret_key: [[IN]] sec ", sec_x.data, 32);
sub_sec_x = this->controle_device->get_subaddress_secret_key(sec_x, index_x);
log_hexbuffer("get_subaddress_secret_key: [[OUT]] sub_sec", sub_sec_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_GET_SUBADDRESS_SECRET_KEY);
//sec
this->send_secret((unsigned char*)sec.data, offset);
//index
static_assert(sizeof(cryptonote::subaddress_index) == 8, "cryptonote::subaddress_index shall be 8 bytes length");
memmove(this->buffer_send+offset, &index, sizeof(cryptonote::subaddress_index));
offset +=8 ;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
this->receive_secret((unsigned char*)sub_sec.data, offset);
#ifdef DEBUG_HWDEVICE
crypto::secret_key sub_sec_clear = hw::ledger::decrypt(sub_sec);
hw::ledger::check32("get_subaddress_secret_key", "sub_sec", sub_sec_x.data, sub_sec_clear.data);
#endif
return sub_sec;
}
/* ======================================================================= */
/* DERIVATION & KEY */
/* ======================================================================= */
bool device_ledger::verify_keys(const crypto::secret_key &secret_key, const crypto::public_key &public_key) {
auto locks = tools::unique_locks(device_locker, command_locker);
int offset;
offset = set_command_header_noopt(INS_VERIFY_KEY);
//sec
this->send_secret((unsigned char*)secret_key.data, offset);
//pub
memmove(this->buffer_send+offset, public_key.data, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
uint32_t verified =
this->buffer_recv[0] << 24 |
this->buffer_recv[1] << 16 |
this->buffer_recv[2] << 8 |
this->buffer_recv[3] << 0 ;
return verified == 1;
}
bool device_ledger::scalarmultKey(rct::key & aP, const rct::key &P, const rct::key &a) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key P_x = P;
const rct::key a_x = hw::ledger::decrypt(a);
rct::key aP_x;
log_hexbuffer("scalarmultKey: [[IN]] P ", (char*)P_x.bytes, 32);
log_hexbuffer("scalarmultKey: [[IN]] a ", (char*)a_x.bytes, 32);
this->controle_device->scalarmultKey(aP_x, P_x, a_x);
log_hexbuffer("scalarmultKey: [[OUT]] aP", (char*)aP_x.bytes, 32);
#endif
int offset = set_command_header_noopt(INS_SECRET_SCAL_MUL_KEY);
//pub
memmove(this->buffer_send+offset, P.bytes, 32);
offset += 32;
//sec
this->send_secret(a.bytes, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(aP.bytes, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("scalarmultKey", "mulkey", (char*)aP_x.bytes, (char*)aP.bytes);
#endif
return true;
}
bool device_ledger::scalarmultBase(rct::key &aG, const rct::key &a) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key a_x = hw::ledger::decrypt(a);
rct::key aG_x;
log_hexbuffer("scalarmultKey: [[IN]] a ", (char*)a_x.bytes, 32);
this->controle_device->scalarmultBase(aG_x, a_x);
log_hexbuffer("scalarmultKey: [[OUT]] aG", (char*)aG_x.bytes, 32);
#endif
int offset = set_command_header_noopt(INS_SECRET_SCAL_MUL_BASE);
//sec
this->send_secret(a.bytes, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(aG.bytes, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("scalarmultBase", "mulkey", (char*)aG_x.bytes, (char*)aG.bytes);
#endif
return true;
}
bool device_ledger::sc_secret_add( crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) {
auto locks = tools::unique_locks(device_locker, command_locker);
int offset;
#ifdef DEBUG_HWDEVICE
const crypto::secret_key a_x = hw::ledger::decrypt(a);
const crypto::secret_key b_x = hw::ledger::decrypt(b);
crypto::secret_key r_x;
rct::key aG_x;
log_hexbuffer("sc_secret_add: [[IN]] a ", (char*)a_x.data, 32);
log_hexbuffer("sc_secret_add: [[IN]] b ", (char*)b_x.data, 32);
this->controle_device->sc_secret_add(r_x, a_x, b_x);
log_hexbuffer("sc_secret_add: [[OUT]] aG", (char*)r_x.data, 32);
#endif
offset = set_command_header_noopt(INS_SECRET_KEY_ADD);
//sec key
this->send_secret((unsigned char*)a.data, offset);
//sec key
this->send_secret((unsigned char*)b.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//sec key
offset = 0;
this->receive_secret((unsigned char*)r.data, offset);
#ifdef DEBUG_HWDEVICE
crypto::secret_key r_clear = hw::ledger::decrypt(r);
hw::ledger::check32("sc_secret_add", "r", r_x.data, r_clear.data);
#endif
return true;
}