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c77d2bfaa0
monero/src/device/device.hpp
cslashm c77d2bfaa0 Add the possibility to export private view key for fast scan. 
On client startup the device asks for authorization to export the private view key.
If user agree, the client hold the private view key allowing a fast blockchain scan.
If the user does not agree, the blockchain scan is fully done via the device.
2018-03-31 18:00:33 +02:00

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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.
//
/* Note about debug:
* To debug Device you can def the following :
* #define DEBUG_HWDEVICE
* Activate debug mechanism:
* - Add more trace
* - All computation done by device are checked by default device.
* Required IODUMMYCRYPT_HWDEVICE or IONOCRYPT_HWDEVICE for fully working
* #define IODUMMYCRYPT_HWDEVICE 1
* - It assumes sensitive data encryption is is off on device side. a XOR with 0x55. This allow Ledger Class to make check on clear value
* #define IONOCRYPT_HWDEVICE 1
* - It assumes sensitive data encryption is off on device side.
*/
#pragma once
#include "crypto/crypto.h"
#include "crypto/chacha.h"
#include "ringct/rctTypes.h"
#ifndef USE_DEVICE_LEDGER
#define USE_DEVICE_LEDGER 1
#endif
#if !defined(HAVE_PCSC)
#undef USE_DEVICE_LEDGER
#define USE_DEVICE_LEDGER 0
#endif
#if USE_DEVICE_LEDGER
#define WITH_DEVICE_LEDGER
#endif
// forward declaration needed because this header is included by headers in libcryptonote_basic which depends on libdevice
namespace cryptonote
{
struct account_public_address;
struct account_keys;
struct subaddress_index;
}
namespace hw {
namespace {
//device funcion not supported
#define dfns() \
throw std::runtime_error(std::string("device function not supported: ")+ std::string(__FUNCTION__) + \
std::string(" (device.hpp line ")+std::to_string(__LINE__)+std::string(").")); \
return false;
}
class device {
protected:
std::string name;
public:
device() {}
device(const device &hwdev) {}
virtual ~device() {}
explicit virtual operator bool() const = 0;
enum device_mode {
NONE,
TRANSACTION_CREATE_REAL,
TRANSACTION_CREATE_FAKE,
TRANSACTION_PARSE
};
/* ======================================================================= */
/* SETUP/TEARDOWN */
/* ======================================================================= */
virtual bool set_name(const std::string &name) = 0;
virtual const std::string get_name() const = 0;
virtual bool init(void) = 0;
virtual bool release() = 0;
virtual bool connect(void) = 0;
virtual bool disconnect(void) = 0;
virtual bool set_mode(device_mode mode) = 0;
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
virtual void lock(void) = 0;
virtual void unlock(void) = 0;
virtual bool try_lock(void) = 0;
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */
virtual bool get_public_address(cryptonote::account_public_address &pubkey) = 0;
virtual bool get_secret_keys(crypto::secret_key &viewkey , crypto::secret_key &spendkey) = 0;
virtual bool generate_chacha_key(const cryptonote::account_keys &keys, crypto::chacha_key &key) = 0;
/* ======================================================================= */
/* SUB ADDRESS */
/* ======================================================================= */
virtual bool 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) = 0;
virtual crypto::public_key get_subaddress_spend_public_key(const cryptonote::account_keys& keys, const cryptonote::subaddress_index& index) = 0;
virtual std::vector<crypto::public_key> get_subaddress_spend_public_keys(const cryptonote::account_keys &keys, uint32_t account, uint32_t begin, uint32_t end) = 0;
virtual cryptonote::account_public_address get_subaddress(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index) = 0;
virtual crypto::secret_key get_subaddress_secret_key(const crypto::secret_key &sec, const cryptonote::subaddress_index &index) = 0;
/* ======================================================================= */
/* DERIVATION & KEY */
/* ======================================================================= */
virtual bool verify_keys(const crypto::secret_key &secret_key, const crypto::public_key &public_key) = 0;
virtual bool scalarmultKey(rct::key & aP, const rct::key &P, const rct::key &a) = 0;
virtual bool scalarmultBase(rct::key &aG, const rct::key &a) = 0;
virtual bool sc_secret_add( crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) = 0;
virtual crypto::secret_key generate_keys(crypto::public_key &pub, crypto::secret_key &sec, const crypto::secret_key& recovery_key = crypto::secret_key(), bool recover = false) = 0;
virtual bool generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) = 0;
virtual bool derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) = 0;
virtual bool derive_secret_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::secret_key &sec, crypto::secret_key &derived_sec) = 0;
virtual bool derive_public_key(const crypto::key_derivation &derivation, const std::size_t output_index, const crypto::public_key &pub, crypto::public_key &derived_pub) = 0;
virtual bool secret_key_to_public_key(const crypto::secret_key &sec, crypto::public_key &pub) = 0;
virtual bool generate_key_image(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_image &image) = 0;
// alternative prototypes available in libringct
rct::key scalarmultKey(const rct::key &P, const rct::key &a)
{
rct::key aP;
scalarmultKey(aP, P, a);
return aP;
}
rct::key scalarmultBase(const rct::key &a)
{
rct::key aG;
scalarmultBase(aG, a);
return aG;
}
/* ======================================================================= */
/* TRANSACTION */
/* ======================================================================= */
virtual bool open_tx(crypto::secret_key &tx_key) = 0;
virtual bool encrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key) = 0;
bool decrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key)
{
// Encryption and decryption are the same operation (xor with a key)
return encrypt_payment_id(payment_id, public_key, secret_key);
}
virtual bool ecdhEncode(rct::ecdhTuple & unmasked, const rct::key & sharedSec) = 0;
virtual bool ecdhDecode(rct::ecdhTuple & masked, const rct::key & sharedSec) = 0;
virtual bool add_output_key_mapping(const crypto::public_key &Aout, const crypto::public_key &Bout, const bool is_subaddress, const size_t real_output_index,
const rct::key &amount_key, const crypto::public_key &out_eph_public_key) = 0;
virtual bool 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) = 0;
virtual bool mlsag_prepare(const rct::key &H, const rct::key &xx, rct::key &a, rct::key &aG, rct::key &aHP, rct::key &rvII) = 0;
virtual bool mlsag_prepare(rct::key &a, rct::key &aG) = 0;
virtual bool mlsag_hash(const rct::keyV &long_message, rct::key &c) = 0;
virtual bool 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) = 0;
virtual bool close_tx(void) = 0;
} ;
struct reset_mode {
device& hwref;
reset_mode(hw::device& dev) : hwref(dev) { }
~reset_mode() { hwref.set_mode(hw::device::NONE);}
};
device& get_device(const std::string device_descriptor) ;
}
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