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oxen-core/src/device/device_ledger.cpp
Jason Rhinelander 2525ab4d0d Ledger: Revise/fix/optimize data chunk transmission 
- Sending one 32-byte key at a time is noticeably slower than sending in
  larger chunks.
- Sending in 256-byte chunks was broken because the size field is only
  254 bytes.  Since we are actually sending these for Keccak, it makes
  some sense to chunk it at 136 bytes (i.e. keccak block size).
- Change how multipart works to send as parts 1->2->...->0.  Previously
  0xff (rather than 0) marked the last chunk.
- Allow multi-part chunks to wrap by wrapping the part after 255 to 1
  (skipping 0 since that now means "last").
- Use multi-part chunk scheme for CLSAG in addition to prefix hashing.
2020-11-30 00:47:12 -04:00

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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"
#include "common/varint.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 4
#define INS_NONE 0x00
#define INS_RESET 0x02
#define INS_GET_NETWORK 0x10
#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_CLSAG 0x7F
#define INS_CLOSE_TX 0x80
#define INS_GET_TX_PROOF 0xA0
#define INS_GET_RESPONSE 0xc0
// When we have to send a bunch of data to be keccak hashed we send in chunks of this size; we
// could go up to 254, but Keccak uses 136-byte chunks so it makes some sense to send at that
// size.
constexpr size_t KECCAK_HASH_CHUNK_SIZE = 136;
static_assert(KECCAK_HASH_CHUNK_SIZE <= 254, "Max keccak data chunk size exceeds the protocol limit");
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();
check_network_type();
#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;
}
static std::string nettype_string(cryptonote::network_type n) {
switch (n) {
case cryptonote::network_type::MAINNET: return "mainnet";
case cryptonote::network_type::TESTNET: return "testnet";
case cryptonote::network_type::DEVNET: return "devnet";
case cryptonote::network_type::FAKECHAIN: return "fakenet";
default: return "(unknown)";
}
}
void device_ledger::check_network_type() {
auto locks = tools::unique_locks(device_locker, command_locker);
send_simple(INS_GET_NETWORK);
std::string coin{reinterpret_cast<const char*>(buffer_recv), 4};
auto device_nettype = static_cast<cryptonote::network_type>(buffer_recv[4]);
MDEBUG("Ledger wallet is set to " << coin << " " << nettype_string(device_nettype));
if (coin != COIN_NETWORK)
throw std::runtime_error{"Invalid wallet app: expected " + std::string{COIN_NETWORK} + ", got " + coin};
if (device_nettype != nettype)
throw std::runtime_error{"Ledger wallet is set to the wrong network type: expected " + nettype_string(nettype)
+ " but the device is set to " + nettype_string(device_nettype)};
}
void device_ledger::set_network_type(cryptonote::network_type set_nettype) {
nettype = set_nettype;
}
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;
}
crypto::secret_key device_ledger::generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key, bool recover) {
auto locks = tools::unique_locks(device_locker, command_locker);
int offset;
if (recover) {
throw std::runtime_error("device generate key does not support recover");
}
#ifdef DEBUG_HWDEVICE
crypto::public_key pub_x;
crypto::secret_key sec_x;
crypto::secret_key recovery_key_x;
if (recover) {
recovery_key_x = hw::ledger::decrypt(recovery_key);
log_hexbuffer("generate_keys: [[IN]] pub", (char*)recovery_key_x.data, 32);
}
#endif
send_simple(INS_GENERATE_KEYPAIR);
offset = 0;
//pub key
memmove(pub.data, &this->buffer_recv[0], 32);
offset += 32;
this->receive_secret((unsigned char*)sec.data, offset);
#ifdef DEBUG_HWDEVICE
crypto::secret_key sec_clear = hw::ledger::decrypt(sec);
sec_x = sec_clear;
log_hexbuffer("generate_keys: [[OUT]] pub", (char*)pub.data, 32);
log_hexbuffer("generate_keys: [[OUT]] sec", (char*)sec_clear.data, 32);
crypto::secret_key_to_public_key(sec_x,pub_x);
hw::ledger::check32("generate_keys", "pub", pub_x.data, pub.data);
#endif
return sec;
}
bool device_ledger::generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) {
auto locks = tools::unique_locks(device_locker, command_locker);
bool r = false;
#ifdef DEBUG_HWDEVICE
const crypto::public_key pub_x = pub;
const crypto::secret_key sec_x = (sec == rct::rct2sk(rct::I)) ? sec: hw::ledger::decrypt(sec);
crypto::key_derivation derivation_x;
log_hexbuffer("generate_key_derivation: [[IN]] pub ", pub_x.data, 32);
log_hexbuffer("generate_key_derivation: [[IN]] sec ", sec_x.data, 32);
this->controle_device->generate_key_derivation(pub_x, sec_x, derivation_x);
log_hexbuffer("generate_key_derivation: [[OUT]] derivation", derivation_x.data, 32);
#endif
if ((this->mode == TRANSACTION_PARSE) && has_view_key) {
//A derivation is resquested in PASRE mode and we have the view key,
//so do that wihtout the device and return the derivation unencrypted.
MDEBUG( "generate_key_derivation : PARSE mode with known viewkey");
//Note derivation in PARSE mode can only happen with viewkey, so assert it!
assert(is_fake_view_key(sec));
r = crypto::generate_key_derivation(pub, this->viewkey, derivation);
} else {
int offset = set_command_header_noopt(INS_GEN_KEY_DERIVATION);
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//sec
this->send_secret((unsigned char*)sec.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
//derivattion data
this->receive_secret((unsigned char*)derivation.data, offset);
r = true;
}
#ifdef DEBUG_HWDEVICE
crypto::key_derivation derivation_clear ;
if ((this->mode == TRANSACTION_PARSE) && has_view_key) {
derivation_clear = derivation;
} else {
derivation_clear = hw::ledger::decrypt(derivation);
}
hw::ledger::check32("generate_key_derivation", "derivation", derivation_x.data, derivation_clear.data);
#endif
return r;
}
bool device_ledger::conceal_derivation(crypto::key_derivation &derivation, const crypto::public_key &tx_pub_key, const std::vector<crypto::public_key> &additional_tx_pub_keys, const crypto::key_derivation &main_derivation, const std::vector<crypto::key_derivation> &additional_derivations) {
const crypto::public_key *pkey=NULL;
if (derivation == main_derivation) {
pkey = &tx_pub_key;
MDEBUG("conceal derivation with main tx pub key");
} else {
for(size_t n=0; n < additional_derivations.size();++n) {
if(derivation == additional_derivations[n]) {
pkey = &additional_tx_pub_keys[n];
MDEBUG("conceal derivation with additionnal tx pub key");
break;
}
}
}
ASSERT_X(pkey, "Mismatched derivation on scan info");
return this->generate_key_derivation(*pkey, crypto::null_skey, derivation);
}
bool device_ledger::derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::key_derivation derivation_x = hw::ledger::decrypt(derivation);
const size_t output_index_x = output_index;
crypto::ec_scalar res_x;
log_hexbuffer("derivation_to_scalar: [[IN]] derivation ", derivation_x.data, 32);
log_message ("derivation_to_scalar: [[IN]] output_index ", std::to_string(output_index_x));
this->controle_device->derivation_to_scalar(derivation_x, output_index_x, res_x);
log_hexbuffer("derivation_to_scalar: [[OUT]] res ", res_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_DERIVATION_TO_SCALAR);
//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();
//derivation data
offset = 0;
this->receive_secret((unsigned char*)res.data, offset);
#ifdef DEBUG_HWDEVICE
crypto::ec_scalar res_clear = hw::ledger::decrypt(res);
hw::ledger::check32("derivation_to_scalar", "res", res_x.data, res_clear.data);
#endif
return true;
}
bool device_ledger::derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec, crypto::secret_key &derived_sec) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::key_derivation derivation_x = hw::ledger::decrypt(derivation);
const std::size_t output_index_x = output_index;
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
crypto::secret_key derived_sec_x;
log_hexbuffer("derive_secret_key: [[IN]] derivation ", derivation_x.data, 32);
log_message ("derive_secret_key: [[IN]] index ", std::to_string(output_index_x));
log_hexbuffer("derive_secret_key: [[IN]] sec ", sec_x.data, 32);
this->controle_device->derive_secret_key(derivation_x, output_index_x, sec_x, derived_sec_x);
log_hexbuffer("derive_secret_key: [[OUT]] derived_sec", derived_sec_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_DERIVE_SECRET_KEY);
//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;
//sec
this->send_secret((unsigned char*)sec.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
//sec key
this->receive_secret((unsigned char*)derived_sec.data, offset);
#ifdef DEBUG_HWDEVICE
crypto::secret_key derived_sec_clear = hw::ledger::decrypt(derived_sec);
hw::ledger::check32("derive_secret_key", "derived_sec", derived_sec_x.data, derived_sec_clear.data);
#endif
return true;
}
bool device_ledger::derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub, crypto::public_key &derived_pub){
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::key_derivation derivation_x = hw::ledger::decrypt(derivation);
const std::size_t output_index_x = output_index;
const crypto::public_key pub_x = pub;
crypto::public_key derived_pub_x;
log_hexbuffer("derive_public_key: [[IN]] derivation ", derivation_x.data, 32);
log_message ("derive_public_key: [[IN]] output_index", std::to_string(output_index_x));
log_hexbuffer("derive_public_key: [[IN]] pub ", pub_x.data, 32);
this->controle_device->derive_public_key(derivation_x, output_index_x, pub_x, derived_pub_x);
log_hexbuffer("derive_public_key: [[OUT]] derived_pub ", derived_pub_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_DERIVE_PUBLIC_KEY);
//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;
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
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_public_key", "derived_pub", derived_pub_x.data, derived_pub.data);
#endif
return true;
}
bool device_ledger::secret_key_to_public_key(const crypto::secret_key &sec, crypto::public_key &pub) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
crypto::public_key pub_x;
log_hexbuffer("secret_key_to_public_key: [[IN]] sec ", sec_x.data, 32);
bool rc = this->controle_device->secret_key_to_public_key(sec_x, pub_x);
log_hexbuffer("secret_key_to_public_key: [[OUT]] pub", pub_x.data, 32);
if (!rc){
log_message("FAIL secret_key_to_public_key", "secret_key rejected");
}
#endif
int offset = set_command_header_noopt(INS_SECRET_KEY_TO_PUBLIC_KEY);
//sec key
this->send_secret((unsigned char*)sec.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(pub.data, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("secret_key_to_public_key", "pub", pub_x.data, pub.data);
#endif
return true;
}
bool device_ledger::generate_key_image(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_image &image){
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::public_key pub_x = pub;
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
crypto::key_image image_x;
log_hexbuffer("generate_key_image: [[IN]] pub ", pub_x.data, 32);
log_hexbuffer("generate_key_image: [[IN]] sec ", sec_x.data, 32);
this->controle_device->generate_key_image(pub_x, sec_x, image_x);
log_hexbuffer("generate_key_image: [[OUT]] image ", image_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_GEN_KEY_IMAGE);
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//sec
this->send_secret((unsigned char*)sec.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(image.data, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("generate_key_image", "image", image_x.data, image.data);
#endif
return true;
}
/* ======================================================================= */
/* TRANSACTION */
/* ======================================================================= */
void device_ledger::generate_tx_proof(const crypto::hash &prefix_hash,
const crypto::public_key &R, const crypto::public_key &A, const std::optional<crypto::public_key> &B, const crypto::public_key &D, const crypto::secret_key &r,
crypto::signature &sig) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::hash prefix_hash_x = prefix_hash;
const crypto::public_key R_x = R;
const crypto::public_key A_x = A;
const std::optional<crypto::public_key> B_x = B;
const crypto::public_key D_x = D;
const crypto::secret_key r_x = hw::ledger::decrypt(r);
crypto::signature sig_x;
log_hexbuffer("generate_tx_proof: [[IN]] prefix_hash ", prefix_hash_x.data, 32);
log_hexbuffer("generate_tx_proof: [[IN]] R ", R_x.data, 32);
log_hexbuffer("generate_tx_proof: [[IN]] A ", A_x.data, 32);
if (B_x) {
log_hexbuffer("generate_tx_proof: [[IN]] B ", (*B_x).data, 32);
}
log_hexbuffer("generate_tx_proof: [[IN]] D ", D_x.data, 32);
log_hexbuffer("generate_tx_proof: [[IN]] r ", r_x.data, 32);
#endif
int offset = set_command_header(INS_GET_TX_PROOF);
//options
this->buffer_send[offset] = B?0x01:0x00;
offset += 1;
//prefix_hash
memmove(&this->buffer_send[offset], prefix_hash.data, 32);
offset += 32;
// R
memmove(&this->buffer_send[offset], R.data, 32);
offset += 32;
// A
memmove(&this->buffer_send[offset], A.data, 32);
offset += 32;
// B
if (B) {
memmove(&this->buffer_send[offset], (*B).data, 32);
} else {
memset(&this->buffer_send[offset], 0, 32);
}
offset += 32;
// D
memmove(&this->buffer_send[offset], D.data, 32);
offset += 32;
// r
this->send_secret((unsigned char*)r.data, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(sig.c.data, &this->buffer_recv[0], 32);
memmove(sig.r.data, &this->buffer_recv[32], 32);
#ifdef DEBUG_HWDEVICE
log_hexbuffer("GENERATE_TX_PROOF: **c** ", sig.c.data, sizeof( sig.c.data));
log_hexbuffer("GENERATE_TX_PROOF: **r** ", sig.r.data, sizeof( sig.r.data));
this->controle_device->generate_tx_proof(prefix_hash_x, R_x, A_x, B_x, D_x, r_x, sig_x);
MDEBUG("FAIL is normal if random is not fixed in proof");
hw::ledger::check32("generate_tx_proof", "c", sig_x.c.data, sig.c.data);
hw::ledger::check32("generate_tx_proof", "r", sig_x.r.data, sig.r.data);
#endif
}
bool device_ledger::open_tx(crypto::secret_key &tx_key) {
auto locks = tools::unique_locks(device_locker, command_locker, *this);
key_map.clear();
hmac_map.clear();
this->tx_in_progress = true;
int offset = set_command_header_noopt(INS_OPEN_TX, 0x01);
//account
this->buffer_send[offset+0] = 0x00;
this->buffer_send[offset+1] = 0x00;
this->buffer_send[offset+2] = 0x00;
this->buffer_send[offset+3] = 0x00;
offset += 4;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//skip R, receive: r, r_hmac, fake_a, a_hmac, fake_b, hmac_b
unsigned char tmp[32];
offset = 32;
this->receive_secret((unsigned char*)tx_key.data, offset);
this->receive_secret(tmp, offset);
this->receive_secret(tmp, offset);
#ifdef DEBUG_HWDEVICE
const crypto::secret_key r_x = hw::ledger::decrypt(tx_key);
log_hexbuffer("open_tx: [[OUT]] R ", (char*)&this->buffer_recv[0], 32);
log_hexbuffer("open_tx: [[OUT]] r ", r_x.data, 32);
#endif
return true;
}
// Sends data in chunks using the given ins/p1 values, with p2 set to a sequence
// 1->2->....->255->1->...->0 so that the hw device can make sure it didn't miss anything.
// (Note the wrapping goes 255->1, not 255->0, as 0 always indicates the last piece).
// Max chunk size is 254 bytes.
void device_ledger::send_multipart_data(uint8_t ins, uint8_t p1, std::string_view data, uint8_t chunk_size) {
assert(chunk_size <= 254);
size_t cnt = 0;
while (!data.empty()) {
auto piece = data.substr(0, chunk_size);
data.remove_prefix(piece.size());
if (data.empty())
cnt = 0; // Signals last piece
else
cnt = cnt == 255 ? 1 : cnt + 1;
int offset = set_command_header_noopt(ins, p1, cnt);
std::memcpy(buffer_send+offset, piece.data(), piece.size());
offset += piece.size();
buffer_send[4] = offset-5;
length_send = offset;
exchange();
}
}
void device_ledger::get_transaction_prefix_hash(const cryptonote::transaction_prefix& tx, crypto::hash& h) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
crypto::hash h_x;
this->controle_device->get_transaction_prefix_hash(tx,h_x);
MDEBUG("get_transaction_prefix_hash [[IN]] h_x/1 "<<h_x);
#endif
// As of protocol version 4, we send:
// - tx version
// - tx type (transfer, registration, stake, lns)
// - tx lock time (if the tx has multiple lock times this will be the largest one)
// We then wait for confirmation from the device, and if we get it we continue by sending the
// data in chunks. The last chunk will have a p2 subparameter of 0;
// otherwise the p2 subparameters are in order starting at 1 (and, if we wrap, we go from 255->1).
std::string tx_prefix;
try {
tx_prefix = serialization::dump_binary(const_cast<cryptonote::transaction_prefix&>(tx));
} catch (const std::exception& e) {
ASSERT_MES_AND_THROW("unable to serialize transaction prefix: " << e.what());
}
unsigned char* send = this->buffer_send + set_command_header_noopt(INS_PREFIX_HASH, 1);
// version as varint
tools::write_varint(send, static_cast<std::underlying_type_t<cryptonote::txversion>>(tx.version));
// transaction type as varint
tools::write_varint(send, static_cast<std::underlying_type_t<cryptonote::txtype>>(tx.type));
// Transactions can have multiple unlock times; find the longest one and send that
uint64_t max_unlock = 0;
for (size_t i = 0; i < tx.vout.size(); i++)
max_unlock = std::max(max_unlock, tx.get_unlock_time(i));
tools::write_varint(send, max_unlock);
this->length_send = send - this->buffer_send;
this->buffer_send[4] = length_send - 5;
this->exchange_wait_on_input();
// hash the full prefix
uint8_t cnt = 0;
for (size_t pos = 0; pos < tx_prefix.size(); pos += 256, ++cnt) {
size_t size = tx_prefix.size() - pos;
if (size > 256)
size = 256;
else
cnt = 0xff;
size_t header_size = set_command_header_noopt(INS_PREFIX_HASH, 2, cnt);
assert(header_size + 256 <= BUFFER_SEND_SIZE);
std::memcpy(this->buffer_send + header_size, &tx_prefix[pos], size);
this->buffer_send[4] = size;
this->length_send = header_size + size;
exchange();
}
memmove(h.data, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check8("prefix_hash", "h", h_x.data, h.data);
#endif
}
bool device_ledger::encrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const crypto::public_key public_key_x = public_key;
const crypto::secret_key secret_key_x = hw::ledger::decrypt(secret_key);
crypto::hash8 payment_id_x = payment_id;
log_hexbuffer("encrypt_payment_id: [[IN]] payment_id ", payment_id_x.data, 32);
log_hexbuffer("encrypt_payment_id: [[IN]] public_key ", public_key_x.data, 32);
log_hexbuffer("encrypt_payment_id: [[IN]] secret_key ", secret_key_x.data, 32);
this->controle_device->encrypt_payment_id(payment_id_x, public_key_x, secret_key_x);
log_hexbuffer("encrypt_payment_id: [[OUT]] payment_id ", payment_id_x.data, 32);
#endif
int offset = set_command_header_noopt(INS_STEALTH);
//pub
memmove(&this->buffer_send[offset], public_key.data, 32);
offset += 32;
//sec
this->send_secret((unsigned char*)secret_key.data, offset);
//id
memmove(&this->buffer_send[offset], payment_id.data, 8);
offset += 8;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(payment_id.data, &this->buffer_recv[0], 8);
#ifdef DEBUG_HWDEVICE
hw::ledger::check8("stealth", "payment_id", payment_id_x.data, payment_id.data);
#endif
return true;
}
bool device_ledger::generate_output_ephemeral_keys(
const size_t tx_version,
bool& found_change,
const cryptonote::account_keys& sender_account_keys,
const crypto::public_key& txkey_pub,
const crypto::secret_key& tx_key,
const cryptonote::tx_destination_entry& dst_entr,
const std::optional<cryptonote::tx_destination_entry>& change_addr,
const size_t output_index,
const bool need_additional_txkeys,
const std::vector<crypto::secret_key>& additional_tx_keys,
std::vector<crypto::public_key>& additional_tx_public_keys,
std::vector<rct::key>& amount_keys,
crypto::public_key& out_eph_public_key) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const size_t &tx_version_x = tx_version;
const cryptonote::account_keys sender_account_keys_x = hw::ledger::decrypt(sender_account_keys);
memmove((void*)sender_account_keys_x.m_view_secret_key.data, dbg_viewkey.data, 32);
const crypto::public_key txkey_pub_x = txkey_pub;
const crypto::secret_key tx_key_x = hw::ledger::decrypt(tx_key);
const cryptonote::tx_destination_entry dst_entr_x = dst_entr;
const std::optional<cryptonote::tx_destination_entry> change_addr_x = change_addr;
const size_t output_index_x = output_index;
const bool need_additional_txkeys_x = need_additional_txkeys;
std::vector<crypto::secret_key> additional_tx_keys_x;
for (const auto k: additional_tx_keys) {
additional_tx_keys_x.push_back(hw::ledger::decrypt(k));
}
std::vector<crypto::public_key> additional_tx_public_keys_x;
std::vector<rct::key> amount_keys_x;
crypto::public_key out_eph_public_key_x;
log_message ("generate_output_ephemeral_keys: [[IN]] tx_version", std::to_string(tx_version_x));
//log_hexbuffer("generate_output_ephemeral_keys: [[IN]] sender_account_keys.view", sender_account_keys.m_sview_secret_key.data, 32);
//log_hexbuffer("generate_output_ephemeral_keys: [[IN]] sender_account_keys.spend", sender_account_keys.m_spend_secret_key.data, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] txkey_pub", txkey_pub_x.data, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] tx_key", tx_key_x.data, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] dst_entr.view", dst_entr_x.addr.m_view_public_key.data, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] dst_entr.spend", dst_entr_x.addr.m_spend_public_key.data, 32);
if (change_addr) {
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] change_addr.view", (*change_addr_x).m_view_public_key.data, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] change_addr.spend", (*change_addr_x).m_spend_public_key.data, 32);
}
log_message ("generate_output_ephemeral_keys: [[IN]] output_index", std::to_string(output_index_x));
log_message ("generate_output_ephemeral_keys: [[IN]] need_additional_txkeys", std::to_string(need_additional_txkeys_x));
if(need_additional_txkeys_x) {
log_hexbuffer("generate_output_ephemeral_keys: [[IN]] additional_tx_keys[oi]", additional_tx_keys_x[output_index].data, 32);
}
this->controle_device->generate_output_ephemeral_keys(tx_version_x, sender_account_keys_x, txkey_pub_x, tx_key_x, dst_entr_x, change_addr_x, output_index_x, need_additional_txkeys_x, additional_tx_keys_x,
additional_tx_public_keys_x, amount_keys_x, out_eph_public_key_x);
if(need_additional_txkeys_x) {
log_hexbuffer("additional_tx_public_keys_x: [[OUT]] additional_tx_public_keys_x", additional_tx_public_keys_x.back().data, 32);
}
log_hexbuffer("generate_output_ephemeral_keys: [[OUT]] amount_keys ", (char*)amount_keys_x.back().bytes, 32);
log_hexbuffer("generate_output_ephemeral_keys: [[OUT]] out_eph_public_key ", out_eph_public_key_x.data, 32);
#endif
ASSERT_X(tx_version > 1, "TX version not supported"<<tx_version);
// make additional tx pubkey if necessary
cryptonote::keypair additional_txkey;
if (need_additional_txkeys) {
additional_txkey.sec = additional_tx_keys[output_index];
}
bool &is_change = found_change; // NOTE(loki): Alias our param into theirs so we don't have to change much code.
if (change_addr && dst_entr == *change_addr && !is_change)
is_change = true; // sending change to yourself; derivation = a*R
int offset = set_command_header_noopt(INS_GEN_TXOUT_KEYS);
//tx_version
this->buffer_send[offset+0] = tx_version>>24;
this->buffer_send[offset+1] = tx_version>>16;
this->buffer_send[offset+2] = tx_version>>8;
this->buffer_send[offset+3] = tx_version>>0;
offset += 4;
//tx_key
this->send_secret((unsigned char*)tx_key.data, offset);
//txkey_pub
memmove(&this->buffer_send[offset], txkey_pub.data, 32);
offset += 32;
//Aout
memmove(&this->buffer_send[offset], dst_entr.addr.m_view_public_key.data, 32);
offset += 32;
//Bout
memmove(&this->buffer_send[offset], dst_entr.addr.m_spend_public_key.data, 32);
offset += 32;
//output 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;
//is_change,
this->buffer_send[offset] = is_change;
offset++;
//is_subaddress
this->buffer_send[offset] = dst_entr.is_subaddress;
offset++;
//need_additional_key
this->buffer_send[offset] = need_additional_txkeys;
offset++;
//additional_tx_key
if (need_additional_txkeys) {
this->send_secret((unsigned char*)additional_txkey.sec.data, offset);
} else {
memset(&this->buffer_send[offset], 0, 32);
offset += 32;
}
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
unsigned int recv_len = this->length_recv;
//if (tx_version > 1)
{
ASSERT_X(recv_len>=32, "Not enought data from device");
crypto::secret_key scalar1;
this->receive_secret((unsigned char*)scalar1.data, offset);
amount_keys.push_back(rct::sk2rct(scalar1));
recv_len -= 32;
}
ASSERT_X(recv_len>=32, "Not enought data from device");
memmove(out_eph_public_key.data, &this->buffer_recv[offset], 32);
recv_len -= 32;
offset += 32;
if (need_additional_txkeys)
{
ASSERT_X(recv_len>=32, "Not enought data from device");
memmove(additional_txkey.pub.data, &this->buffer_recv[offset], 32);
additional_tx_public_keys.push_back(additional_txkey.pub);
offset += 32;
recv_len -= 32;
}
// add ABPkeys
this->add_output_key_mapping(dst_entr.addr.m_view_public_key, dst_entr.addr.m_spend_public_key, dst_entr.is_subaddress, is_change,
need_additional_txkeys, output_index,
amount_keys.back(), out_eph_public_key);
#ifdef DEBUG_HWDEVICE
log_hexbuffer("generate_output_ephemeral_keys: clear amount_key", (const char*)hw::ledger::decrypt(amount_keys.back()).bytes, 32);
hw::ledger::check32("generate_output_ephemeral_keys", "amount_key", (const char*)amount_keys_x.back().bytes, (const char*)hw::ledger::decrypt(amount_keys.back()).bytes);
if (need_additional_txkeys) {
hw::ledger::check32("generate_output_ephemeral_keys", "additional_tx_key", additional_tx_public_keys_x.back().data, additional_tx_public_keys.back().data);
}
hw::ledger::check32("generate_output_ephemeral_keys", "out_eph_public_key", out_eph_public_key_x.data, out_eph_public_key.data);
#endif
return true;
}
bool device_ledger::add_output_key_mapping(const crypto::public_key &Aout, const crypto::public_key &Bout, const bool is_subaddress, const bool is_change,
const bool need_additional, const size_t real_output_index,
const rct::key &amount_key, const crypto::public_key &out_eph_public_key) {
key_map.add(ABPkeys(rct::pk2rct(Aout),rct::pk2rct(Bout), is_subaddress, is_change, need_additional, real_output_index, rct::pk2rct(out_eph_public_key), amount_key));
return true;
}
rct::key device_ledger::genCommitmentMask(const rct::key &AKout) {
#ifdef DEBUG_HWDEVICE
const rct::key AKout_x = hw::ledger::decrypt(AKout);
rct::key mask_x;
mask_x = this->controle_device->genCommitmentMask(AKout_x);
#endif
rct::key mask;
int offset = set_command_header_noopt(INS_GEN_COMMITMENT_MASK);
// AKout
this->send_secret(AKout.bytes, offset);
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(mask.bytes, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("genCommitmentMask", "mask", (const char*)mask_x.bytes, (const char*)mask.bytes);
#endif
return mask;
}
bool device_ledger::ecdhEncode(rct::ecdhTuple & unmasked, const rct::key & AKout, bool short_amount) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key AKout_x = hw::ledger::decrypt(AKout);
rct::ecdhTuple unmasked_x = unmasked;
this->controle_device->ecdhEncode(unmasked_x, AKout_x, short_amount);
#endif
int offset = set_command_header(INS_BLIND);
//options
this->buffer_send[offset] = short_amount?0x02:0x00;
offset += 1;
// AKout
this->send_secret(AKout.bytes, offset);
//mask k
memmove(this->buffer_send+offset, unmasked.mask.bytes, 32);
offset += 32;
//value v
memmove(this->buffer_send+offset, unmasked.amount.bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(unmasked.amount.bytes, &this->buffer_recv[0], 32);
memmove(unmasked.mask.bytes, &this->buffer_recv[32], 32);
#ifdef DEBUG_HWDEVICE
MDEBUG("ecdhEncode: Akout: "<<AKout_x);
hw::ledger::check32("ecdhEncode", "amount", (char*)unmasked_x.amount.bytes, (char*)unmasked.amount.bytes);
hw::ledger::check32("ecdhEncode", "mask", (char*)unmasked_x.mask.bytes, (char*)unmasked.mask.bytes);
log_hexbuffer("Blind AKV input", (char*)&this->buffer_recv[64], 3*32);
#endif
return true;
}
bool device_ledger::ecdhDecode(rct::ecdhTuple & masked, const rct::key & AKout, bool short_amount) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key AKout_x = hw::ledger::decrypt(AKout);
rct::ecdhTuple masked_x = masked;
this->controle_device->ecdhDecode(masked_x, AKout_x, short_amount);
#endif
int offset = set_command_header(INS_UNBLIND);
//options
this->buffer_send[offset] = short_amount?0x02:0x00;
offset += 1;
// AKout
this->send_secret(AKout.bytes, offset);
//mask k
memmove(this->buffer_send+offset, masked.mask.bytes, 32);
offset += 32;
//value v
memmove(this->buffer_send+offset, masked.amount.bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(masked.amount.bytes, &this->buffer_recv[0], 32);
memmove(masked.mask.bytes, &this->buffer_recv[32], 32);
#ifdef DEBUG_HWDEVICE
MDEBUG("ecdhEncode: Akout: "<<AKout_x);
hw::ledger::check32("ecdhDecode", "amount", (char*)masked_x.amount.bytes, (char*)masked.amount.bytes);
hw::ledger::check32("ecdhDecode", "mask", (char*)masked_x.mask.bytes,(char*) masked.mask.bytes);
#endif
return true;
}
bool device_ledger::clsag_prehash(const std::string &data, size_t inputs_size, size_t outputs_size,
const rct::keyV &hashes, const rct::ctkeyV &outPk,
rct::key &prehash) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const std::string blob_x = blob;
size_t inputs_size_x = inputs_size;
size_t outputs_size_x = outputs_size;
const rct::keyV hashes_x = hashes;
const rct::ctkeyV outPk_x = outPk;
rct::key prehash_x;
this->controle_device->clsag_prehash(blob_x, inputs_size_x, outputs_size_x, hashes_x, outPk_x, prehash_x);
if (inputs_size) {
log_message("clsag_prehash", (std::string("inputs_size not null: ") + std::to_string(inputs_size)).c_str());
}
this->key_map.log();
#endif
data = blob.data();
// ====== u8 type, varint txnfee ======
int offset = set_command_header(INS_VALIDATE, 0x01, 0x01);
//options
this->buffer_send[offset++] = (inputs_size == 0) ? 0x00 : OPTION_MORE_DATA;
this->buffer_send[offset++] = data[0];
// txnfee
size_t data_offset = 1;
while (data[data_offset] & 0x80)
this->buffer_send[offset++] = data[data_offset++];
this->buffer_send[offset++] = data[data_offset++];
this->buffer_send[4] = offset-5;
this->length_send = offset;
// check fee user input
CHECK_AND_ASSERT_THROW_MES(this->exchange_wait_on_input() == 0, "Fee denied on device.");
auto type = static_cast<rct::RCTType>(data[0]);
//pseudoOuts
if (type == rct::RCTType::Simple) {
for (size_t i = 0; i < inputs_size; i++) {
offset = set_command_header(INS_VALIDATE, 0x01, i+2);
//options
this->buffer_send[offset] = (i==inputs_size-1)? 0x00:0x80;
offset += 1;
//pseudoOut
memmove(this->buffer_send+offset, &data[data_offset],32);
offset += 32;
data_offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
}
}
// ====== Aout, Bout, AKout, C, v, k ======
size_t kv_offset = data_offset;
size_t C_offset = kv_offset + 8 * outputs_size;
for (size_t i = 0; i < outputs_size; i++) {
ABPkeys outKeys;
bool found;
found = this->key_map.find(outPk[i].dest, outKeys);
if (!found) {
log_hexbuffer("Pout not found", (char*)outPk[i].dest.bytes, 32);
CHECK_AND_ASSERT_THROW_MES(found, "Pout not found");
}
offset = set_command_header(INS_VALIDATE, 0x02, i+1);
//options
this->buffer_send[offset] = (i==outputs_size-1)? 0x00:0x80 ;
this->buffer_send[offset] |= (type==rct::RCTType::Bulletproof2 || type==rct::RCTType::CLSAG)?0x02:0x00;
offset += 1;
//is_subaddress
this->buffer_send[offset] = outKeys.is_subaddress;
offset++;
//is_change_address
this->buffer_send[offset] = outKeys.is_change_address;
offset++;
//Aout
memmove(this->buffer_send+offset, outKeys.Aout.bytes, 32);
offset += 32;
//Bout
memmove(this->buffer_send+offset, outKeys.Bout.bytes, 32);
offset += 32;
//AKout
this->send_secret(outKeys.AKout.bytes, offset);
//C
memmove(this->buffer_send+offset, &data[C_offset], 32);
offset += 32;
C_offset += 32;
if (type==rct::RCTType::Bulletproof2 || type==rct::RCTType::CLSAG) {
//k
memset(this->buffer_send+offset, 0, 32);
offset += 32;
//v
memset(this->buffer_send+offset, 0, 32);
memmove(this->buffer_send+offset, &data[kv_offset], 8);
offset += 32;
kv_offset += 8;
} else {
// k, v
memmove(this->buffer_send+offset, &data[kv_offset], 32+32);
offset += 32+32;
kv_offset += 32+32;
}
this->buffer_send[4] = offset-5;
this->length_send = offset;
// check transaction user input
CHECK_AND_ASSERT_THROW_MES(this->exchange_wait_on_input() == 0, "Transaction denied on device.");
#ifdef DEBUG_HWDEVICE
log_hexbuffer("Prehash AKV input", (char*)&this->buffer_recv[64], 3*32);
#endif
}
// ====== C[], message, proof======
C_offset = kv_offset;
for (size_t i = 0; i < outputs_size; i++) {
offset = set_command_header(INS_VALIDATE, 0x03, i+1);
//options
this->buffer_send[offset] = 0x80 ;
offset += 1;
//C
memmove(this->buffer_send+offset, &data[C_offset], 32);
offset += 32;
C_offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
}
offset = set_command_header_noopt(INS_VALIDATE, 0x03, outputs_size+1);
//message
memmove(this->buffer_send+offset, hashes[0].bytes, 32);
offset += 32;
//proof
memmove(this->buffer_send+offset, hashes[2].bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(prehash.bytes, this->buffer_recv, 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("clsag_prehash", "prehash", (char*)prehash_x.bytes, (char*)prehash.bytes);
#endif
return true;
}
bool device_ledger::clsag_prepare(const rct::key &p, const rct::key &z, rct::key &I, rct::key &D, const rct::key &H, rct::key &a, rct::key &aG, rct::key &aH) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key p_x = hw::ledger::decrypt(p);
const rct::key z_x = z;
rct::key I_x;
rct::key D_x;
const rct::key H_x = H;
rct::key a_x;
rct::key aG_x;
rct::key aH_x;
this->controle_device->clsag_prepare(p_x, z_x, I_x, D_x, H_x, a_x, aG_x, aH_x);
#endif
/*
rct::skpkGen(a,aG); // aG = a*G
rct::scalarmultKey(aH,H,a); // aH = a*H
rct::scalarmultKey(I,H,p); // I = p*H
rct::scalarmultKey(D,H,z); // D = z*H
*/
int offset = set_command_header_noopt(INS_CLSAG, 1);
//p
this->send_secret(p.bytes, offset);
//z
memmove(this->buffer_send+offset, z.bytes, 32);
offset += 32;
//H
memmove(this->buffer_send+offset, H.bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
//a
this->receive_secret(a.bytes, offset);
//aG
memmove(aG.bytes, this->buffer_recv+offset, 32);
offset +=32;
//aH
memmove(aH.bytes, this->buffer_recv+offset, 32);
offset +=32;
//I = pH
memmove(I.bytes, this->buffer_recv+offset, 32);
offset +=32;
//D = zH
memmove(D.bytes, this->buffer_recv+offset, 32);
offset +=32;
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("clsag_prepare", "I", (char*)I_x.bytes, (char*)I.bytes);
hw::ledger::check32("clsag_prepare", "D", (char*)D_x.bytes, (char*)D.bytes);
hw::ledger::check32("clsag_prepare", "a", (char*)a_x.bytes, (char*)a.bytes);
hw::ledger::check32("clsag_prepare", "aG", (char*)aG_x.bytes, (char*)aG.bytes);
hw::ledger::check32("clsag_prepare", "aH", (char*)aH_x.bytes, (char*)aH.bytes);
#endif
return true;
}
bool device_ledger::clsag_hash(const rct::keyV &keydata, rct::key &hash) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::keyV data_x = data;
rct::key hash_x;
this->controle_device->clsag_hash(data_x, hash_x);
#endif
std::string_view data{reinterpret_cast<const char*>(keydata.data()), sizeof(rct::key)*keydata.size()};
send_multipart_data(INS_CLSAG, 2, data, KECCAK_HASH_CHUNK_SIZE);
//c/hash
memmove(hash.bytes, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("clsag_hash", "hash", (char*)hash_x.bytes, (char*)hash.bytes);
#endif
return true;
}
bool device_ledger::clsag_sign(const rct::key &c, const rct::key &a, const rct::key &p, const rct::key &z, const rct::key &mu_P, const rct::key &mu_C, rct::key &s) {
auto locks = tools::unique_locks(device_locker, command_locker);
#ifdef DEBUG_HWDEVICE
const rct::key c_x = c;
const rct::key a_x = hw::ledger::decrypt(a);
const rct::key p_x = hw::ledger::decrypt(p);
const rct::key z_x = z;
const rct::key mu_P_x = mu_P;
const rct::key mu_C_x = mu_C;
rct::key s_x;
this->controle_device->clsag_sign(c_x, a_x, p_x, z_x, mu_P_x, mu_C_x, s_x);
#endif
/*
rct::key s0_p_mu_P;
sc_mul(s0_p_mu_P.bytes,mu_P.bytes,p.bytes);
rct::key s0_add_z_mu_C;
sc_muladd(s0_add_z_mu_C.bytes,mu_C.bytes,z.bytes,s0_p_mu_P.bytes);
sc_mulsub(s.bytes,c.bytes,s0_add_z_mu_C.bytes,a.bytes);
*/
int offset = set_command_header_noopt(INS_CLSAG, 3);
//c
//discard, unse internal one
//a
this->send_secret(a.bytes, offset);
//p
this->send_secret(p.bytes, offset);
//z
memmove(this->buffer_send+offset, z.bytes, 32);
offset += 32;
//mu_P
memmove(this->buffer_send+offset, mu_P.bytes, 32);
offset += 32;
//mu_C
memmove(this->buffer_send+offset, mu_C.bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
offset = 0;
//s
memmove(s.bytes, this->buffer_recv+offset, 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("clsag_sign", "s", (char*)s_x.bytes, (char*)s.bytes);
#endif
return true;
}
bool device_ledger::close_tx() {
auto locks = tools::unique_locks(device_locker, command_locker);
send_simple(INS_CLOSE_TX);
key_map.clear();
hmac_map.clear();
this->tx_in_progress = false;
this->unlock();
return true;
}
/* ---------------------------------------------------------- */
static device_ledger *legder_device = NULL;
void register_all(std::map<std::string, std::unique_ptr<device>> &registry) {
if (!legder_device) {
legder_device = new device_ledger();
legder_device->set_name("Ledger");
}
registry.insert(std::make_pair("Ledger", std::unique_ptr<device>(legder_device)));
}
#else //WITH_DEVICE_LEDGER
void register_all(std::map<std::string, std::unique_ptr<device>> &registry) {
}
#endif //WITH_DEVICE_LEDGER
}
}
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