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c77d2bfaa0
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.
207 lines
10 KiB
C++
207 lines
10 KiB
C++
// Copyright (c) 2017-2018, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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/* Note about debug:
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* To debug Device you can def the following :
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* #define DEBUG_HWDEVICE
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* Activate debug mechanism:
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* - Add more trace
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* - All computation done by device are checked by default device.
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* Required IODUMMYCRYPT_HWDEVICE or IONOCRYPT_HWDEVICE for fully working
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* #define IODUMMYCRYPT_HWDEVICE 1
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* - 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
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* #define IONOCRYPT_HWDEVICE 1
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* - It assumes sensitive data encryption is off on device side.
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*/
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#pragma once
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#include "crypto/crypto.h"
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#include "crypto/chacha.h"
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#include "ringct/rctTypes.h"
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#ifndef USE_DEVICE_LEDGER
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#define USE_DEVICE_LEDGER 1
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#endif
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#if !defined(HAVE_PCSC)
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#undef USE_DEVICE_LEDGER
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#define USE_DEVICE_LEDGER 0
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#endif
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#if USE_DEVICE_LEDGER
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#define WITH_DEVICE_LEDGER
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#endif
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// forward declaration needed because this header is included by headers in libcryptonote_basic which depends on libdevice
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namespace cryptonote
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{
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struct account_public_address;
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struct account_keys;
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struct subaddress_index;
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}
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namespace hw {
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namespace {
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//device funcion not supported
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#define dfns() \
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throw std::runtime_error(std::string("device function not supported: ")+ std::string(__FUNCTION__) + \
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std::string(" (device.hpp line ")+std::to_string(__LINE__)+std::string(").")); \
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return false;
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}
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class device {
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protected:
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std::string name;
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public:
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device() {}
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device(const device &hwdev) {}
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virtual ~device() {}
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explicit virtual operator bool() const = 0;
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enum device_mode {
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NONE,
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TRANSACTION_CREATE_REAL,
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TRANSACTION_CREATE_FAKE,
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TRANSACTION_PARSE
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};
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/* ======================================================================= */
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/* SETUP/TEARDOWN */
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/* ======================================================================= */
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virtual bool set_name(const std::string &name) = 0;
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virtual const std::string get_name() const = 0;
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virtual bool init(void) = 0;
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virtual bool release() = 0;
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virtual bool connect(void) = 0;
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virtual bool disconnect(void) = 0;
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virtual bool set_mode(device_mode mode) = 0;
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/* ======================================================================= */
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/* LOCKER */
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/* ======================================================================= */
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virtual void lock(void) = 0;
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virtual void unlock(void) = 0;
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virtual bool try_lock(void) = 0;
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/* ======================================================================= */
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/* WALLET & ADDRESS */
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/* ======================================================================= */
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virtual bool get_public_address(cryptonote::account_public_address &pubkey) = 0;
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virtual bool get_secret_keys(crypto::secret_key &viewkey , crypto::secret_key &spendkey) = 0;
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virtual bool generate_chacha_key(const cryptonote::account_keys &keys, crypto::chacha_key &key) = 0;
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/* ======================================================================= */
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/* SUB ADDRESS */
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/* ======================================================================= */
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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;
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virtual crypto::public_key get_subaddress_spend_public_key(const cryptonote::account_keys& keys, const cryptonote::subaddress_index& index) = 0;
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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;
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virtual cryptonote::account_public_address get_subaddress(const cryptonote::account_keys& keys, const cryptonote::subaddress_index &index) = 0;
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virtual crypto::secret_key get_subaddress_secret_key(const crypto::secret_key &sec, const cryptonote::subaddress_index &index) = 0;
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/* ======================================================================= */
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/* DERIVATION & KEY */
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/* ======================================================================= */
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virtual bool verify_keys(const crypto::secret_key &secret_key, const crypto::public_key &public_key) = 0;
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virtual bool scalarmultKey(rct::key & aP, const rct::key &P, const rct::key &a) = 0;
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virtual bool scalarmultBase(rct::key &aG, const rct::key &a) = 0;
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virtual bool sc_secret_add( crypto::secret_key &r, const crypto::secret_key &a, const crypto::secret_key &b) = 0;
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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;
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virtual bool generate_key_derivation(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_derivation &derivation) = 0;
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virtual bool derivation_to_scalar(const crypto::key_derivation &derivation, const size_t output_index, crypto::ec_scalar &res) = 0;
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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;
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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;
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virtual bool secret_key_to_public_key(const crypto::secret_key &sec, crypto::public_key &pub) = 0;
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virtual bool generate_key_image(const crypto::public_key &pub, const crypto::secret_key &sec, crypto::key_image &image) = 0;
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// alternative prototypes available in libringct
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rct::key scalarmultKey(const rct::key &P, const rct::key &a)
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{
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rct::key aP;
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scalarmultKey(aP, P, a);
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return aP;
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}
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rct::key scalarmultBase(const rct::key &a)
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{
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rct::key aG;
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scalarmultBase(aG, a);
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return aG;
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}
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/* ======================================================================= */
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/* TRANSACTION */
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/* ======================================================================= */
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virtual bool open_tx(crypto::secret_key &tx_key) = 0;
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virtual bool encrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key) = 0;
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bool decrypt_payment_id(crypto::hash8 &payment_id, const crypto::public_key &public_key, const crypto::secret_key &secret_key)
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{
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// Encryption and decryption are the same operation (xor with a key)
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return encrypt_payment_id(payment_id, public_key, secret_key);
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}
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virtual bool ecdhEncode(rct::ecdhTuple & unmasked, const rct::key & sharedSec) = 0;
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virtual bool ecdhDecode(rct::ecdhTuple & masked, const rct::key & sharedSec) = 0;
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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,
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const rct::key &amount_key, const crypto::public_key &out_eph_public_key) = 0;
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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;
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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;
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virtual bool mlsag_prepare(rct::key &a, rct::key &aG) = 0;
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virtual bool mlsag_hash(const rct::keyV &long_message, rct::key &c) = 0;
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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;
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virtual bool close_tx(void) = 0;
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} ;
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struct reset_mode {
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device& hwref;
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reset_mode(hw::device& dev) : hwref(dev) { }
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~reset_mode() { hwref.set_mode(hw::device::NONE);}
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};
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device& get_device(const std::string device_descriptor) ;
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}
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