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monero/src/device/device_ledger.cpp
cslashm e745c1e38d Code modifications to integrate Ledger HW device into monero-wallet-cli. 
The basic approach it to delegate all sensitive data (master key, secret
ephemeral key, key derivation, ....) and related operations to the device.
As device has low memory, it does not keep itself the values
(except for view/spend keys) but once computed there are encrypted (with AES
are equivalent) and return back to monero-wallet-cli. When they need to be
manipulated by the device, they are decrypted on receive.

Moreover, using the client for storing the value in encrypted form limits
the modification in the client code. Those values are transfered from one
C-structure to another one as previously.

The code modification has been done with the wishes to be open to any
other hardware wallet. To achieve that a C++ class hw::Device has been
introduced. Two initial implementations are provided: the "default", which
remaps all calls to initial Monero code, and  the "Ledger", which delegates
all calls to Ledger device.
2018-03-04 12:54:53 +01:00

2070 lines
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// Copyright (c) 2017-2018, The Monero 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 "device_ledger.hpp"
#include "log.hpp"
#include "ringct/rctOps.h"
namespace hw {
namespace ledger {
#ifdef WITH_DEVICE_LEDGER
#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "device.ledger"
/* ===================================================================== */
/* === Debug ==== */
/* ===================================================================== */
void set_apdu_verbose(bool verbose) {
apdu_verbose = verbose;
}
#define TRACKD MTRACE("hw")
#define ASSERT_RV(rv) CHECK_AND_ASSERT_THROW_MES((rv)==SCARD_S_SUCCESS, "Fail SCard API : (" << (rv) << ") "<< pcsc_stringify_error(rv)<<" Device="<<this->id<<", hCard="<<hCard<<", hContext="<<hContext);
#define ASSERT_SW(sw,ok,msk) CHECK_AND_ASSERT_THROW_MES(((sw)&(mask))==(ok), "Wrong Device Status : SW=" << std::hex << (sw) << " (EXPECT=" << std::hex << (ok) << ", MASK=" << std::hex << (mask) << ")") ;
#define ASSERT_T0(exp) CHECK_AND_ASSERT_THROW_MES(exp, "Protocol assert failure: "#exp ) ;
#ifdef DEBUG_HWDEVICE
#define DEVICE_CONTROLE :controle_device(hw::get_device("default"))
crypto::secret_key viewkey;
crypto::secret_key spendkey;
#else
#define DEVICE_CONTROLE
#endif
/* ===================================================================== */
/* === Keymap ==== */
/* ===================================================================== */
ABPkeys::ABPkeys(const rct::key& A, const rct::key& B, size_t real_output_index, const rct::key& P, const rct::key& AK) {
Aout = A;
Bout = B;
index = real_output_index;
Pout = P;
AKout = AK;
}
ABPkeys::ABPkeys(const ABPkeys& keys) {
Aout = keys.Aout;
Bout = keys.Bout;
index = keys.index;
Pout = keys.Pout;
AKout = keys.AKout;
}
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 (" index", std::to_string(ABP[i].index));
log_hexbuffer(" Pout", (char*)ABP[i].Pout.bytes, 32);
}
}
#endif
/* ===================================================================== */
/* === Device ==== */
/* ===================================================================== */
static int device_id = 0;
#define INS_NONE 0x00
#define INS_RESET 0x02
#define INS_GET_KEY 0x20
#define INS_PUT_KEY 0x22
#define INS_GET_CHACHA8_PREKEY 0x24
#define INS_VERIFY_KEY 0x26
#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_BLIND 0x78
#define INS_UNBLIND 0x7A
#define INS_VALIDATE 0x7C
#define INS_MLSAG 0x7E
#define INS_CLOSE_TX 0x80
#define INS_GET_RESPONSE 0xc0
void device_ledger::logCMD() {
if (apdu_verbose) {
char strbuffer[1024];
sprintf(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]
);
buffer_to_str(strbuffer+strlen(strbuffer), sizeof(strbuffer), (char*)(this->buffer_send+5), this->length_send-5);
MDEBUG( "CMD :" << strbuffer);
}
}
void device_ledger::logRESP() {
if (apdu_verbose) {
char strbuffer[1024];
sprintf(strbuffer, "%.02x%.02x ",
this->buffer_recv[this->length_recv-2],
this->buffer_recv[this->length_recv-1]
);
buffer_to_str(strbuffer+strlen(strbuffer), sizeof(strbuffer), (char*)(this->buffer_recv), this->length_recv-2);
MDEBUG( "RESP :" << strbuffer);
}
}
/* -------------------------------------------------------------- */
device_ledger::device_ledger() DEVICE_CONTROLE {
this->id = device_id++;
this->hCard = 0;
this->hContext = 0;
this->reset_buffer();
MDEBUG( "Device "<<this->id <<" Created");
}
device_ledger::~device_ledger() {
this->release();
MDEBUG( "Device "<<this->id <<" Destroyed");
}
/* ======================================================================= */
/* MISC */
/* ======================================================================= */
bool device_ledger::reset() {
lock_device();
try {
int offset;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_RESET;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
unsigned int device_ledger::exchange(unsigned int ok, unsigned int mask) {
LONG rv;
int sw;
ASSERT_T0(this->length_send <= BUFFER_SEND_SIZE);
logCMD();
this->length_recv = BUFFER_RECV_SIZE;
rv = SCardTransmit(this->hCard,
SCARD_PCI_T0, this->buffer_send, this->length_send,
NULL, this->buffer_recv, &this->length_recv);
ASSERT_RV(rv);
ASSERT_T0(this->length_recv <= BUFFER_RECV_SIZE);
logRESP();
sw = (this->buffer_recv[this->length_recv-2]<<8) | this->buffer_recv[this->length_recv-1];
ASSERT_SW(sw,ok,msk);
return sw;
}
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);
}
void device_ledger::lock_device() {
MDEBUG( "Ask for LOCKING for device "<<this->id);
device_locker.lock();
MDEBUG( "Device "<<this->id << " LOCKed");
}
void device_ledger::unlock_device() {
try {
MDEBUG( "Ask for UNLOCKING for device "<<this->id);
} catch (...) {
}
device_locker.unlock();
MDEBUG( "Device "<<this->id << " UNLOCKed");
}
void device_ledger::lock_tx() {
MDEBUG( "Ask for LOCKING for TX "<<this->id);
//tx_locker.lock();
MDEBUG( "TX "<<this->id << " LOCKed");
}
void device_ledger::unlock_tx() {
MDEBUG( "Ask for UNLOCKING for TX "<<this->id);
//tx_locker.unlock();
MDEBUG( "TX "<<this->id << " UNLOCKed");
}
/* ======================================================================= */
/* 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->full_name.empty() || (this->hCard == 0)) {
return std::string("<disconnected:").append(this->name).append(">");
}
return this->full_name;
}
bool device_ledger::init(void) {
LONG rv;
this->release();
rv = SCardEstablishContext(SCARD_SCOPE_SYSTEM,0,0, &this->hContext);
ASSERT_RV(rv);
MDEBUG( "Device "<<this->id <<" SCardContext created: hContext="<<this->hContext);
this->hCard = 0;
return true;
}
bool device_ledger::release() {
this->disconnect();
if (this->hContext) {
SCardReleaseContext(this->hContext);
MDEBUG( "Device "<<this->id <<" SCardContext released: hContext="<<this->hContext);
this->hContext = 0;
this->full_name.clear();
}
return true;
}
bool device_ledger::connect(void) {
BYTE pbAtr[MAX_ATR_SIZE];
LPSTR mszReaders;
DWORD dwReaders;
LONG rv;
DWORD dwState, dwProtocol, dwAtrLen, dwReaderLen;
this->disconnect();
#ifdef SCARD_AUTOALLOCATE
dwReaders = SCARD_AUTOALLOCATE;
rv = SCardListReaders(this->hContext, NULL, (LPSTR)&mszReaders, &dwReaders);
#else
dwReaders = 0;
rv = SCardListReaders(this->hContext, NULL, NULL, &dwReaders);
if (rv != SCARD_S_SUCCESS)
return false;
mszReaders = (LPSTR)calloc(dwReaders, sizeof(char));
rv = SCardListReaders(this->hContext, NULL, mszReaders, &dwReaders);
#endif
if (rv == SCARD_S_SUCCESS) {
char* p;
const char* prefix = this->name.c_str();
p = mszReaders;
MDEBUG( "Looking for " << std::string(prefix));
while (*p) {
MDEBUG( "Device Found: " << std::string(p));
if ((strncmp(prefix, p, strlen(prefix))==0)) {
MDEBUG( "Device Match: " << std::string(p));
if ((rv = SCardConnect(this->hContext,
p, SCARD_SHARE_EXCLUSIVE, SCARD_PROTOCOL_T0,
&this->hCard, &dwProtocol))!=SCARD_S_SUCCESS) {
break;
}
MDEBUG( "Device "<<this->id <<" Connected: hCard="<<this->hCard);
dwAtrLen = sizeof(pbAtr);
if ((rv = SCardStatus(this->hCard, NULL, &dwReaderLen, &dwState, &dwProtocol, pbAtr, &dwAtrLen))!=SCARD_S_SUCCESS) {
break;
}
MDEBUG( "Device "<<this->id <<" Status OK");
rv = SCARD_S_SUCCESS ;
this->full_name = std::string(p);
break;
}
p += strlen(p) +1;
}
}
if (mszReaders) {
#ifdef SCARD_AUTOALLOCATE
SCardFreeMemory(this->hContext, mszReaders);
#else
free(mszReaders);
#endif
mszReaders = NULL;
}
if (rv != SCARD_S_SUCCESS) {
if ( hCard) {
SCardDisconnect(this->hCard, SCARD_UNPOWER_CARD);
MDEBUG( "Device "<<this->id <<" disconnected: hCard="<<this->hCard);
this->hCard = 0;
}
}
ASSERT_RV(rv);
this->reset();
#ifdef DEBUG_HWDEVICE
cryptonote::account_public_address pubkey;
this->get_public_address(pubkey);
crypto::secret_key vkey;
crypto::secret_key skey;
this->get_secret_keys(vkey,skey);
#endif
return rv==SCARD_S_SUCCESS;
}
bool device_ledger::disconnect() {
if (this->hCard) {
SCardDisconnect(this->hCard, SCARD_UNPOWER_CARD);
MDEBUG( "Device "<<this->id <<" disconnected: hCard="<<this->hCard);
this->hCard = 0;
}
return true;
}
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */
bool device_ledger::get_secret_keys(crypto::secret_key &viewkey , crypto::secret_key &spendkey) {
memset(viewkey.data, 0x00, 32);
memset(spendkey.data, 0xFF, 32);
return true;
}
/* Application API */
bool device_ledger::get_public_address(cryptonote::account_public_address &pubkey){
lock_device();
try {
int offset;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_KEY;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(pubkey.m_view_public_key.data, this->buffer_recv, 32);
memmove(pubkey.m_spend_public_key.data, this->buffer_recv+32, 32);
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
#ifdef DEBUG_HWDEVICE
bool device_ledger::get_secret_keys(crypto::secret_key &viewkey , crypto::secret_key &spendkey) {
lock_device();
try {
//spcialkey, normal conf handled in decrypt
int offset;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_KEY;
this->buffer_send[2] = 0x02;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//clear key
memmove(ledger::viewkey.data, this->buffer_recv+64, 32);
memmove(ledger::spendkey.data, this->buffer_recv+96, 32);
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
#endif
bool device_ledger::generate_chacha_key(const cryptonote::account_keys &keys, crypto::chacha_key &key) {
lock_device();
try {
int offset;
#ifdef DEBUG_HWDEVICE
const cryptonote::account_keys keys_x = decrypt(keys);
crypto::chacha_key key_x;
this->controle_device.generate_chacha_key(keys_x, key_x);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_CHACHA8_PREKEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
char prekey[200];
memmove(prekey, &this->buffer_recv[0], 200);
crypto::generate_chacha_key(&prekey[0], sizeof(prekey), key, true);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("generate_chacha_key", "key", (char*)key_x.data(), (char*)key.data());
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
/* ======================================================================= */
/* 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){
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const crypto::public_key pub_x = pub;
const crypto::key_derivation derivation_x = hw::ledger::decrypt(derivation);
const std::size_t output_index_x = output_index;
crypto::public_key derived_pub_x;
this->controle_device.derive_subaddress_public_key(pub_x, derivation_x,output_index_x,derived_pub_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_DERIVE_SUBADDRESS_PUBLIC_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//derivation
memmove(this->buffer_send+offset, derivation.data, 32);
offset += 32;
//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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::get_subaddress_spend_public_key(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index, crypto::public_key &D) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#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;
this->controle_device.get_subaddress_spend_public_key(keys_x, index_x, D_x);
#endif
if (index.is_zero()) {
D = keys.m_account_address.m_spend_public_key;
} else {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_SUBADDRESS_SPEND_PUBLIC_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool 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;
this->get_subaddress_spend_public_key(keys, index, D);
pkeys.push_back(D);
}
return true;
}
bool device_ledger::get_subaddress(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index, cryptonote::account_public_address &address) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#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;
this->controle_device.get_subaddress(keys_x, index_x, address_x);
#endif
if (index.is_zero()) {
address = keys.m_account_address;
} else {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_SUBADDRESS;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::get_subaddress_secret_key(const crypto::secret_key &sec, const cryptonote::subaddress_index &index, crypto::secret_key &sub_sec) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#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;
this->controle_device.get_subaddress_secret_key(sec_x, index_x, sub_sec_x);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GET_SUBADDRESS_SECRET_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//sec
memmove(this->buffer_send+offset, sec.data, 32);
offset += 32;
//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(sub_sec.data, &this->buffer_recv[0], 32);
#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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
/* ======================================================================= */
/* DERIVATION & KEY */
/* ======================================================================= */
bool device_ledger::verify_keys(const crypto::secret_key &secret_key, const crypto::public_key &public_key) {
lock_device();
try {
int offset =0,sw;
unsigned char options = 0;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VERIFY_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//sec
memmove(this->buffer_send+offset, secret_key.data, 32);
offset += 32;
//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 ;
unlock_device();
return verified == 1;
}catch (...) {
unlock_device();
throw;
}
return false;
}
bool device_ledger::scalarmultKey(rct::key & aP, const rct::key &P, const rct::key &a) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const rct::key pub_x = pub;
const rct::key sec_x = hw::ledger::decrypt(sec);
rct::key mulkey_x;
this->controle_device.scalarmultKey(pub_x, sec_x, mulkey_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_SECRET_SCAL_MUL_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//pub
memmove(this->buffer_send+offset, P.bytes, 32);
offset += 32;
//sec
memmove(this->buffer_send+offset, a.bytes, 32);
offset += 32;
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*)mulkey_x.bytes, (char*)mulkey.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::scalarmultBase(rct::key &aG, const rct::key &a) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const rct::key sec_x = hw::ledger::decrypt(sec);
rct::key mulkey_x;
this->controle_device.scalarmultBase(sec_x, mulkey_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_SECRET_SCAL_MUL_BASE;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//sec
memmove(this->buffer_send+offset, a.bytes, 32);
offset += 32;
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*)mulkey_x.bytes, (char*)mulkey.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::sc_secret_add( crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#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;
this->controle_device.sc_secret_add(r_x, a_x, b_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_SECRET_KEY_ADD;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//sec key
memmove(this->buffer_send+offset, a.data, 32);
offset += 32;
//sec key
memmove(this->buffer_send+offset, b.data, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(r.data, &this->buffer_recv[0], 32);
#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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key, bool recover, crypto::secret_key &rng) {
if (recover) {
throw std::runtime_error("device generate key does not support recover");
}
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
bool recover_x = recover;
const crypto::secret_key recovery_key_x = recovery_key;
crypto::public_key pub_x;
crypto::secret_key sec_x;
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GENERATE_KEYPAIR;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(pub.data, &this->buffer_recv[0], 32);
memmove(sec.data, &this->buffer_recv[32], 32);
#ifdef DEBUG_HWDEVICE
crypto::secret_key sec_clear = hw::ledger::decrypt(sec);
sec_x = sec_clear;
crypto::secret_key_to_public_key(sec_x,pub_x);
hw::ledger::check32("generate_keys", "pub", pub_x.data, pub.data);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const crypto::public_key pub_x = pub;
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
crypto::key_derivation derivation_x;
this->controle_device.generate_key_derivation(pub_x, sec_x, derivation_x);
hw::ledger::log_hexbuffer("generate_key_derivation: sec_x.data", sec_x.data, 32);
hw::ledger::log_hexbuffer("generate_key_derivation: pub_x.data", pub_x.data, 32);
hw::ledger::log_hexbuffer("generate_key_derivation: derivation_x.data", derivation_x.data, 32);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GEN_KEY_DERIVATION;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//sec
memmove(this->buffer_send+offset, sec.data, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//derivattion data
memmove(derivation.data, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
crypto::key_derivation derivation_clear = hw::ledger::decrypt(derivation);
hw::ledger::check32("generate_key_derivation", "derivation", derivation_x.data, derivation_clear.data);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) {
lock_device();
try {
int offset;
unsigned char options;
#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;
this->controle_device.derivation_to_scalar(derivation_x, output_index_x, res_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_DERIVATION_TO_SCALAR;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//derivattion
memmove(this->buffer_send+offset, derivation.data, 32);
offset += 32;
//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();
//derivattion data
memmove(res.data, &this->buffer_recv[0], 32);
#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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
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) {
lock_device();
try {
int offset;
unsigned char options;
#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;
this->controle_device.derive_secret_key(derivation_x, output_index_x, sec_x, derived_sec_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_DERIVE_SECRET_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//derivation
memmove(this->buffer_send+offset, derivation.data, 32);
offset += 32;
//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
memmove(this->buffer_send+offset, sec.data, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pub key
memmove(derived_sec.data, &this->buffer_recv[0], 32);
#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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
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){
lock_device();
try {
int offset;
unsigned char options;
#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;
this->controle_device.derive_public_key(derivation_x, output_index_x, pub_x, derived_pub_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_DERIVE_PUBLIC_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//derivation
memmove(this->buffer_send+offset, derivation.data, 32);
offset += 32;
//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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::secret_key_to_public_key(const crypto::secret_key &sec, crypto::public_key &pub) {
lock_device();
try {
int offset;
unsigned char options;
#ifdef DEBUG_HWDEVICE
const crypto::secret_key sec_x = hw::ledger::decrypt(sec);
crypto::public_key pub_x;
this->controle_device.secret_key_to_public_key(sec_x, pub_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_SECRET_KEY_TO_PUBLIC_KEY;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//sec key
memmove(this->buffer_send+offset, sec.data, 32);
offset += 32;
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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::generate_key_image(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_image &image){
lock_device();
try {
int offset;
unsigned char options;
#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;
this->controle_device.generate_key_image(pub_x, sec_x, image_x);
#endif
reset_buffer();
options = 0;
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_GEN_KEY_IMAGE;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = options;
offset += 1;
//pub
memmove(this->buffer_send+offset, pub.data, 32);
offset += 32;
//sec
memmove(this->buffer_send+offset, sec.data, 32);
offset += 32;
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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
/* ======================================================================= */
/* TRANSACTION */
/* ======================================================================= */
bool device_ledger::open_tx(crypto::secret_key &tx_key) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
lock_tx();
reset_buffer();
key_map.clear();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_OPEN_TX;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//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();
memmove(tx_key.data, &this->buffer_recv[32], 32);
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::set_signature_mode(unsigned int sig_mode) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_SET_SIGNATURE_MODE;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//account
this->buffer_send[offset] = sig_mode;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::encrypt_payment_id(const crypto::public_key &public_key, const crypto::secret_key &secret_key, crypto::hash8 &payment_id) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#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;
this->controle_device.encrypt_payment_id(public_key_x, secret_key_x, payment_id_x);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_STEALTH;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//pub
memmove(&this->buffer_send[offset], public_key.data, 32);
offset += 32;
//sec
memmove(&this->buffer_send[offset], secret_key.data, 32);
offset += 32;
//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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::add_output_key_mapping(const crypto::public_key &Aout, const crypto::public_key &Bout, size_t real_output_index,
const rct::key &amount_key, const crypto::public_key &out_eph_public_key) {
lock_device();
try {
key_map.add(ABPkeys(rct::pk2rct(Aout),rct::pk2rct(Bout), real_output_index, rct::pk2rct(out_eph_public_key), amount_key));
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::ecdhEncode(rct::ecdhTuple & unmasked, const rct::key & AKout) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const rct::key AKout_x = hw::ledger::decrypt(AKout);
rct::ecdhTuple unmasked_x = unmasked;
this->controle_device.ecdhEncode(AKout_x, unmasked_x);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_BLIND;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
// AKout
memmove(this->buffer_send+offset, AKout.bytes, 32);
offset += 32;
//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
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);
hw::ledger::log_hexbuffer("Blind AKV input", (char*)&this->buffer_recv[64], 3*32);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::ecdhDecode(rct::ecdhTuple & masked, const rct::key & AKout) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const rct::key AKout_x = hw::ledger::decrypt(AKout);
rct::ecdhTuple masked_x = masked;
this->controle_device.ecdhDecode(AKout_x, masked_x);
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_UNBLIND;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
// AKout
memmove(this->buffer_send+offset, AKout.bytes, 32);
offset += 32;
//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
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
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::mlsag_prehash(const std::string &blob, size_t inputs_size, size_t outputs_size,
const rct::keyV &hashes, const rct::ctkeyV &outPk,
rct::key &prehash) {
lock_device();
try {
unsigned char options = 0;
unsigned int data_offset, C_offset, kv_offset, i;
const char *data;
#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.mlsag_prehash(blob_x, inputs_size_x, outputs_size_x, hashes_x, outPk_x, prehash_x);
if (inputs_size) {
log_message("mlsag_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;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VALIDATE;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x01;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = (inputs_size == 0)?0x00:0x80;
offset += 1;
//type
this->buffer_send[offset] = data[0];
offset += 1;
//txnfee
data_offset = 1;
while (data[data_offset]&0x80) {
this->buffer_send[offset] = data[data_offset];
offset += 1;
data_offset += 1;
}
this->buffer_send[offset] = data[data_offset];
offset += 1;
data_offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//pseudoOuts
for ( i = 0; i < inputs_size; i++) {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VALIDATE;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = i+2;
this->buffer_send[4] = 0x00;
offset = 5;
//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 ======
kv_offset = data_offset;
C_offset = kv_offset+ (32*2)*outputs_size;
for ( 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");
}
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VALIDATE;
this->buffer_send[2] = 0x02;
this->buffer_send[3] = i+1;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = (i==outputs_size-1)? 0x00:0x80 ;
offset += 1;
if (found) {
//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
memmove(this->buffer_send+offset, outKeys.AKout.bytes, 32);
offset+=32;
} else {
// dummy: Aout Bout AKout
offset += 32*3;
}
//C
memmove(this->buffer_send+offset, data+C_offset,32);
offset += 32;
C_offset += 32;
//k
memmove(this->buffer_send+offset, data+kv_offset,32);
offset += 32;
//v
kv_offset += 32;
memmove(this->buffer_send+offset, data+kv_offset,32);
offset += 32;
kv_offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
#ifdef DEBUG_HWDEVICE
hw::ledger::log_hexbuffer("Prehash AKV input", (char*)&this->buffer_recv[64], 3*32);
#endif
}
// ====== C[], message, proof======
C_offset = kv_offset;
for (i = 0; i < outputs_size; i++) {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VALIDATE;
this->buffer_send[2] = 0x03;
this->buffer_send[3] = i+1;
this->buffer_send[4] = 0x00;
offset = 5;
//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();
}
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_VALIDATE;
this->buffer_send[2] = 0x03;
this->buffer_send[3] = i+1;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 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("mlsag_prehash", "prehash", (char*)prehash_x.bytes, (char*)prehash.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::mlsag_prepare(const rct::key &H, const rct::key &xx,
rct::key &a, rct::key &aG, rct::key &aHP, rct::key &II) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
const rct::key H_x = H;
const rct::key xx_x = hw::ledger::decrypt(xx);
rct::key a_x;
rct::key aG_x;
rct::key aHP_x;
rct::key II_x;
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_MLSAG;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
//value H
memmove(this->buffer_send+offset, H.bytes, 32);
offset += 32;
//mask xin
memmove(this->buffer_send+offset, xx.bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(a.bytes, &this->buffer_recv[32*0], 32);
memmove(aG.bytes, &this->buffer_recv[32*1], 32);
memmove(aHP.bytes, &this->buffer_recv[32*2], 32);
memmove(II.bytes, &this->buffer_recv[32*3], 32);
#ifdef DEBUG_HWDEVICE
a_x = hw::ledger::decrypt(a);
rct::scalarmultBase(aG_x, a_x);
rct::scalarmultKey(aHP_x, H_x, a_x);
rct::scalarmultKey(II_x, H_x, xx_x);
hw::ledger::check32("mlsag_prepare", "AG", (char*)aG_x.bytes, (char*)aG.bytes);
hw::ledger::check32("mlsag_prepare", "aHP", (char*)aHP_x.bytes, (char*)aHP.bytes);
hw::ledger::check32("mlsag_prepare", "II", (char*)II_x.bytes, (char*)II.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::mlsag_prepare(rct::key &a, rct::key &aG) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
#ifdef DEBUG_HWDEVICE
rct::key a_x;
rct::key aG_x;
#endif
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_MLSAG;
this->buffer_send[2] = 0x01;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
memmove(a.bytes, &this->buffer_recv[32*0], 32);
memmove(aG.bytes, &this->buffer_recv[32*1], 32);
#ifdef DEBUG_HWDEVICE
a_x = hw::ledger::decrypt(a);
rct::scalarmultBase(aG_x, a_x);
hw::ledger::check32("mlsag_prepare", "AG", (char*)aG_x.bytes, (char*)aG.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::mlsag_hash(const rct::keyV &long_message, rct::key &c) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
size_t cnt;
#ifdef DEBUG_HWDEVICE
const rct::keyV long_message_x = long_message;
rct::key c_x;
this->controle_device.mlsag_hash(long_message_x, c_x);
#endif
cnt = long_message.size();
for (size_t i = 0; i<cnt; i++) {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_MLSAG;
this->buffer_send[2] = 0x02;
this->buffer_send[3] = i+1;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] =
(i==(cnt-1))?0x00:0x80; //last
offset += 1;
//msg part
memmove(this->buffer_send+offset, long_message[i].bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
}
memmove(c.bytes, &this->buffer_recv[0], 32);
#ifdef DEBUG_HWDEVICE
hw::ledger::check32("mlsag_hash", "c", (char*)c_x.bytes, (char*)c.bytes);
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::mlsag_sign(const rct::key &c, const rct::keyV &xx, const rct::keyV &alpha, const size_t rows, const size_t dsRows, rct::keyV &ss) {
lock_device();
try {
int offset =0;
unsigned char options = 0;
CHECK_AND_ASSERT_THROW_MES(dsRows<=rows, "dsRows greater than rows");
CHECK_AND_ASSERT_THROW_MES(xx.size() == rows, "xx size does not match rows");
CHECK_AND_ASSERT_THROW_MES(alpha.size() == rows, "alpha size does not match rows");
CHECK_AND_ASSERT_THROW_MES(ss.size() == rows, "ss size does not match rows");
#ifdef DEBUG_HWDEVICE
const rct::key c_x = c;
const rct::keyV xx_x = hw::ledger::decrypt(xx);
const rct::keyV alpha_x = hw::ledger::decrypt(alpha);
const int rows_x = rows;
const int dsRows_x = dsRows;
rct::keyV ss_x(ss.size());
this->controle_device.mlsag_sign(c_x, xx_x, alpha_x, rows_x, dsRows_x, ss_x);
#endif
for (size_t j = 0; j < dsRows; j++) {
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_MLSAG;
this->buffer_send[2] = 0x03;
this->buffer_send[3] = j+1;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
if (j==(dsRows-1)) {
this->buffer_send[offset] |= 0x80; //last
}
offset += 1;
//xx
memmove(this->buffer_send+offset, xx[j].bytes, 32);
offset += 32;
//alpa
memmove(this->buffer_send+offset, alpha[j].bytes, 32);
offset += 32;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
//ss
memmove(ss[j].bytes, &this->buffer_recv[0], 32);
}
for (size_t j = dsRows; j < rows; j++) {
sc_mulsub(ss[j].bytes, c.bytes, xx[j].bytes, alpha[j].bytes);
}
#ifdef DEBUG_HWDEVICE
for (size_t j = 0; j < rows; j++) {
hw::ledger::check32("mlsag_sign", "ss["+std::to_string(j)+"]", (char*)ss_x[j].bytes, (char*)ss[j].bytes);
}
#endif
unlock_device();
}catch (...) {
unlock_device();
throw;
}
return true;
}
bool device_ledger::close_tx() {
lock_device();
try {
int offset =0;
unsigned char options = 0;
reset_buffer();
this->buffer_send[0] = 0x00;
this->buffer_send[1] = INS_CLOSE_TX;
this->buffer_send[2] = 0x00;
this->buffer_send[3] = 0x00;
this->buffer_send[4] = 0x00;
offset = 5;
//options
this->buffer_send[offset] = 0x00;
offset += 1;
this->buffer_send[4] = offset-5;
this->length_send = offset;
this->exchange();
unlock_tx();
unlock_device();
}catch (...) {
unlock_device();
throw;
}
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", 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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