def test_under_threshold(self):
        coin_bitcoin = coins.by_name('Bitcoin')

        ptx1 = TransactionType(version=1, lock_time=0, inputs_cnt=2, outputs_cnt=1)
        pinp1 = TxInputType(script_sig=unhexlify('483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'),
                            prev_hash=unhexlify('c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'),
                            prev_index=1,
                            script_type=None,
                            sequence=None)
        pinp2 = TxInputType(script_sig=unhexlify('48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'),
                            prev_hash=unhexlify('1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'),
                            prev_index=1,
                            script_type=None,
                            sequence=None)
        pout1 = TxOutputBinType(script_pubkey=unhexlify('76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
                                amount=390000,
                                address_n=None)

        inp1 = TxInputType(address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
                           # amount=390000,
                           prev_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'),
                           prev_index=0,
                           amount=None,
                           multisig=None,
                           script_type=None,
                           sequence=None)
        out1 = TxOutputType(address='1MJ2tj2ThBE62zXbBYA5ZaN3fdve5CPAz1',
                            amount=390000 - 90000,  # fee increased to 90000, slightly less than the threshold
                            script_type=OutputScriptType.PAYTOADDRESS,
                            address_n=None)
        tx = SignTx(coin_name=None, version=None, lock_time=None, inputs_count=1, outputs_count=1)

        messages = [
            None,
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXMETA, details=TxRequestDetailsType(request_index=None, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=ptx1),
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp1])),
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=1, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp2])),
            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=unhexlify('d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882')), serialized=None),
            TxAck(tx=TransactionType(bin_outputs=[pout1])),
            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin_bitcoin),
            True,
            signing.UiConfirmTotal(300000, 90000, coin_bitcoin),
            True,
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
        ]

        seed = bip39.seed('alcohol woman abuse must during monitor noble actual mixed trade anger aisle', '')
        root = bip32.from_seed(seed, 'secp256k1')

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
Ejemplo n.º 2
0
async def sign_tx(ctx, msg, keychain):
    signer = signing.sign_tx(msg, keychain)

    res = None
    while True:
        try:
            req = signer.send(res)
        except signing.SigningError as e:
            raise wire.Error(*e.args)
        except multisig.MultisigError as e:
            raise wire.Error(*e.args)
        except addresses.AddressError as e:
            raise wire.Error(*e.args)
        except scripts.ScriptsError as e:
            raise wire.Error(*e.args)
        except segwit_bip143.Bip143Error as e:
            raise wire.Error(*e.args)
        if isinstance(req, TxRequest):
            if req.request_type == TXFINISHED:
                break
            res = await ctx.call(req, TxAck)
        elif isinstance(req, helpers.UiConfirmOutput):
            mods = utils.unimport_begin()
            res = await layout.confirm_output(ctx, req.output, req.coin)
            utils.unimport_end(mods)
            progress.report_init()
        elif isinstance(req, helpers.UiConfirmTotal):
            mods = utils.unimport_begin()
            res = await layout.confirm_total(ctx, req.spending, req.fee,
                                             req.coin)
            utils.unimport_end(mods)
            progress.report_init()
        elif isinstance(req, helpers.UiConfirmFeeOverThreshold):
            mods = utils.unimport_begin()
            res = await layout.confirm_feeoverthreshold(ctx, req.fee, req.coin)
            utils.unimport_end(mods)
            progress.report_init()
        elif isinstance(req, helpers.UiConfirmNonDefaultLocktime):
            mods = utils.unimport_begin()
            res = await layout.confirm_nondefault_locktime(ctx, req.lock_time)
            utils.unimport_end(mods)
            progress.report_init()
        elif isinstance(req, helpers.UiConfirmForeignAddress):
            mods = utils.unimport_begin()
            res = await paths.show_path_warning(ctx, req.address_n)
            utils.unimport_end(mods)
            progress.report_init()
        else:
            raise TypeError("Invalid signing instruction")
    return req
Ejemplo n.º 3
0
    def test_send_native_invalid_address(self):

        coin = coins.by_name('Testnet')
        seed = bip39.seed(' '.join(['all'] * 12), '')

        inp1 = TxInputType(
            # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
            amount=12300000,
            prev_hash=unhexlify('09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a'),
            prev_index=0,
            script_type=InputScriptType.SPENDWITNESS,
            sequence=0xffffffff,
            multisig=None,
        )
        out1 = TxOutputType(
            address='TB1Q694CCP5QCC0UDMFWGP692U2S2HJPQ5H407URTU',  # Error: should be lower case
            script_type=OutputScriptType.PAYTOADDRESS,
            amount=12300000 - 11000 - 5000000,
            address_n=[],
            multisig=None,
        )
        tx = SignTx(coin_name='Testnet', version=None, lock_time=None, inputs_count=1, outputs_count=1)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),

            helpers.UiConfirmForeignAddress(address_n=inp1.address_n),
            True,

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            None
        ]

        keychain = Keychain(seed, [[coin.curve_name]])
        signer = signing.sign_tx(tx, keychain)
        for request, response in chunks(messages, 2):
            if response is None:
                with self.assertRaises(SigningError):
                    signer.send(request)
            else:
                self.assertEqual(signer.send(request), response)
Ejemplo n.º 4
0
async def sign_tx(ctx, msg):
    from apps.wallet.sign_tx import layout, progress, signing

    coin_name = msg.coin_name or "Bitcoin"
    coin = coins.by_name(coin_name)
    # TODO: rework this so we don't have to pass root to signing.sign_tx
    root = await seed.derive_node(ctx, [], curve_name=coin.curve_name)

    signer = signing.sign_tx(msg, root)
    res = None
    while True:
        try:
            req = signer.send(res)
        except signing.SigningError as e:
            raise wire.Error(*e.args)
        except signing.MultisigError as e:
            raise wire.Error(*e.args)
        except signing.AddressError as e:
            raise wire.Error(*e.args)
        except signing.ScriptsError as e:
            raise wire.Error(*e.args)
        except signing.Bip143Error as e:
            raise wire.Error(*e.args)
        if isinstance(req, TxRequest):
            if req.request_type == TXFINISHED:
                break
            res = await ctx.call(req, TxAck)
        elif isinstance(req, UiConfirmOutput):
            res = await layout.confirm_output(ctx, req.output, req.coin)
            progress.report_init()
        elif isinstance(req, UiConfirmTotal):
            res = await layout.confirm_total(ctx, req.spending, req.fee,
                                             req.coin)
            progress.report_init()
        elif isinstance(req, UiConfirmFeeOverThreshold):
            res = await layout.confirm_feeoverthreshold(ctx, req.fee, req.coin)
            progress.report_init()
        elif isinstance(req, UiConfirmForeignAddress):
            res = await layout.confirm_foreign_address(ctx, req.address_n,
                                                       req.coin)
        else:
            raise TypeError("Invalid signing instruction")
    return req
Ejemplo n.º 5
0
async def sign_tx(ctx, msg):
    from apps.wallet.sign_tx import layout, progress, signing

    # TODO: rework this so we don't have to pass root to signing.sign_tx
    root = await seed.derive_node(ctx, [])

    signer = signing.sign_tx(msg, root)
    res = None
    while True:
        try:
            req = signer.send(res)
        except signing.SigningError as e:
            raise wire.Error(*e.args)
        except signing.MultisigError as e:
            raise wire.Error(*e.args)
        except signing.AddressError as e:
            raise wire.Error(*e.args)
        except signing.ScriptsError as e:
            raise wire.Error(*e.args)
        except signing.Bip143Error as e:
            raise wire.Error(*e.args)
        if req.__qualname__ == 'TxRequest':
            if req.request_type == TXFINISHED:
                break
            res = await ctx.call(req, TxAck)
        elif req.__qualname__ == 'UiConfirmOutput':
            res = await layout.confirm_output(ctx, req.output, req.coin)
            progress.report_init()
        elif req.__qualname__ == 'UiConfirmTotal':
            res = await layout.confirm_total(ctx, req.spending, req.fee,
                                             req.coin)
            progress.report_init()
        elif req.__qualname__ == 'UiConfirmFeeOverThreshold':
            res = await layout.confirm_feeoverthreshold(ctx, req.fee, req.coin)
            progress.report_init()
        else:
            raise TypeError('Invalid signing instruction')
    return req
Ejemplo n.º 6
0
    def test_one_one_fee(self):
        # tx: d5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882
        # input 0: 0.0039 BTC

        coin_bitcoin = coins.by_name('Bitcoin')

        ptx1 = TransactionType(version=1,
                               lock_time=0,
                               inputs_cnt=2,
                               outputs_cnt=1)
        pinp1 = TxInputType(
            script_sig=unhexlify(
                '483045022072ba61305fe7cb542d142b8f3299a7b10f9ea61f6ffaab5dca8142601869d53c0221009a8027ed79eb3b9bc13577ac2853269323434558528c6b6a7e542be46e7e9a820141047a2d177c0f3626fc68c53610b0270fa6156181f46586c679ba6a88b34c6f4874686390b4d92e5769fbb89c8050b984f4ec0b257a0e5c4ff8bd3b035a51709503'
            ),
            prev_hash=unhexlify(
                'c16a03f1cf8f99f6b5297ab614586cacec784c2d259af245909dedb0e39eddcf'
            ),
            prev_index=1,
            script_type=None,
            sequence=None)
        pinp2 = TxInputType(
            script_sig=unhexlify(
                '48304502200fd63adc8f6cb34359dc6cca9e5458d7ea50376cbd0a74514880735e6d1b8a4c0221008b6ead7fe5fbdab7319d6dfede3a0bc8e2a7c5b5a9301636d1de4aa31a3ee9b101410486ad608470d796236b003635718dfc07c0cac0cfc3bfc3079e4f491b0426f0676e6643a39198e8e7bdaffb94f4b49ea21baa107ec2e237368872836073668214'
            ),
            prev_hash=unhexlify(
                '1ae39a2f8d59670c8fc61179148a8e61e039d0d9e8ab08610cb69b4a19453eaf'
            ),
            prev_index=1,
            script_type=None,
            sequence=None)
        pout1 = TxOutputBinType(script_pubkey=unhexlify(
            '76a91424a56db43cf6f2b02e838ea493f95d8d6047423188ac'),
                                amount=390000,
                                address_n=None)

        inp1 = TxInputType(
            address_n=[0],  # 14LmW5k4ssUrtbAB4255zdqv3b4w1TuX9e
            # amount=390000,
            prev_hash=unhexlify(
                'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'
            ),
            prev_index=0,
            script_type=None,
            sequence=None)
        out1 = TxOutputType(address='1MJ2tj2ThBE62zXbBYA5ZaN3fdve5CPAz1',
                            amount=390000 - 10000,
                            script_type=OutputScriptType.PAYTOADDRESS,
                            address_n=None)
        tx = SignTx(coin_name=None,
                    version=None,
                    lock_time=None,
                    inputs_count=1,
                    outputs_count=1)

        messages = [
            None,
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXMETA,
                details=TxRequestDetailsType(
                    request_index=None,
                    tx_hash=unhexlify(
                        'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'
                    )),
                serialized=None),
            TxAck(tx=ptx1),
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(
                    request_index=0,
                    tx_hash=unhexlify(
                        'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'
                    )),
                serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp1])),
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(
                    request_index=1,
                    tx_hash=unhexlify(
                        'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'
                    )),
                serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp2])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(
                    request_index=0,
                    tx_hash=unhexlify(
                        'd5f65ee80147b4bcc70b75e4bbf2d7382021b871bd8867ef8fa525ef50864882'
                    )),
                serialized=None),
            TxAck(tx=TransactionType(bin_outputs=[pout1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin_bitcoin),
            True,
            signing.UiConfirmTotal(380000, 10000, coin_bitcoin),
            True,
            # ButtonRequest(code=ButtonRequest_ConfirmOutput),
            # ButtonRequest(code=ButtonRequest_SignTx),
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    signature_index=0,
                    signature=unhexlify(
                        '30450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede781'
                    ),
                    serialized_tx=unhexlify(
                        '010000000182488650ef25a58fef6788bd71b8212038d7f2bbe4750bc7bcb44701e85ef6d5000000006b4830450221009a0b7be0d4ed3146ee262b42202841834698bb3ee39c24e7437df208b8b7077102202b79ab1e7736219387dffe8d615bbdba87e11477104b867ef47afed1a5ede7810121023230848585885f63803a0a8aecdd6538792d5c539215c91698e315bf0253b43dffffffff'
                    ))),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXFINISHED,
                details=None,
                serialized=TxRequestSerializedType(
                    signature_index=None,
                    signature=None,
                    serialized_tx=unhexlify(
                        '0160cc0500000000001976a914de9b2a8da088824e8fe51debea566617d851537888ac00000000'
                    ),
                )),
        ]

        seed = bip39.seed(
            'alcohol woman abuse must during monitor noble actual mixed trade anger aisle',
            '')
        root = bip32.from_seed(seed, 'secp256k1')

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)
Ejemplo n.º 7
0
    def test_send_p2wpkh_in_p2sh(self):

        coin = coins.by_name('Groestlcoin Testnet')

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, coin.curve_name)

        inp1 = TxInputType(
            # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
            amount=123456789,
            prev_hash=unhexlify('09a48bce2f9d5c6e4f0cb9ea1b32d0891855e8acfe5334f9ebd72b9ad2de60cf'),
            prev_index=0,
            script_type=InputScriptType.SPENDP2SHWITNESS,
            sequence=0xfffffffe,
            multisig=None,
        )
        out1 = TxOutputType(
            address='mvbu1Gdy8SUjTenqerxUaZyYjmvedc787y',
            amount=12300000,
            script_type=OutputScriptType.PAYTOADDRESS,
            address_n=[],
            multisig=None,
        )
        out2 = TxOutputType(
            address='2N1LGaGg836mqSQqiuUBLfcyGBhyZYBtBZ7',
            script_type=OutputScriptType.PAYTOADDRESS,
            amount=123456789 - 11000 - 12300000,
            address_n=[],
            multisig=None,
        )
        tx = SignTx(coin_name='Groestlcoin Testnet', version=None, lock_time=650756, inputs_count=1, outputs_count=2)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),

            signing.UiConfirmOutput(out1, coin),
            True,

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=1, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out2])),

            signing.UiConfirmOutput(out2, coin),
            True,

            signing.UiConfirmTotal(123445789 + 11000, 11000, coin),
            True,

            # sign tx
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized inp1
                serialized_tx=unhexlify('01000000000101cf60ded29a2bd7ebf93453feace8551889d0321beab90c4f6e5c9d2fce8ba4090000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5feffffff'),
            )),
            TxAck(tx=TransactionType(outputs=[out1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=1, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized out1
                serialized_tx=unhexlify('02e0aebb00000000001976a914a579388225827d9f2fe9014add644487808c695d88ac'),
                signature_index=None,
                signature=None,
            )),
            TxAck(tx=TransactionType(outputs=[out2])),

            # segwit
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized out2
                serialized_tx=unhexlify('3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87'),
                signature_index=None,
                signature=None,
            )),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXFINISHED, details=None, serialized=TxRequestSerializedType(
                serialized_tx=unhexlify('02483045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7904ee0900'),
                signature_index=0,
                signature=unhexlify('3045022100b7ce2972bcbc3a661fe320ba901e680913b2753fcb47055c9c6ba632fc4acf81022001c3cfd6c2fe92eb60f5176ce0f43707114dd7223da19c56f2df89c13c2fef80'),
            )),
        ]

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)
    def test_send_native_p2wpkh(self):

        coin = coins.by_name('Testnet')

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, 'secp256k1')

        inp1 = TxInputType(
            # 49'/1'/0'/0/0" - tb1qqzv60m9ajw8drqulta4ld4gfx0rdh82un5s65s
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
            amount=12300000,
            prev_hash=unhexlify('09144602765ce3dd8f4329445b20e3684e948709c5cdcaf12da3bb079c99448a'),
            prev_index=0,
            script_type=InputScriptType.SPENDWITNESS,
            sequence=0xffffffff,
            multisig=None,
        )
        out1 = TxOutputType(
            address='2N4Q5FhU2497BryFfUgbqkAJE87aKHUhXMp',
            amount=5000000,
            script_type=OutputScriptType.PAYTOADDRESS,
            address_n=[],
            multisig=None,
        )
        out2 = TxOutputType(
            address='tb1q694ccp5qcc0udmfwgp692u2s2hjpq5h407urtu',
            script_type=OutputScriptType.PAYTOADDRESS,
            amount=12300000 - 11000 - 5000000,
            address_n=[],
            multisig=None,
        )
        tx = SignTx(coin_name='Testnet', version=None, lock_time=None, inputs_count=1, outputs_count=2)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),

            signing.UiConfirmOutput(out1, coin),
            True,

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=1, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(outputs=[out2])),

            signing.UiConfirmOutput(out2, coin),
            True,

            signing.UiConfirmTotal(12300000 - 11000, 11000, coin),
            True,

            # sign tx
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized inp1
                serialized_tx=unhexlify('010000000001018a44999c07bba32df1cacdc50987944e68e3205b4429438fdde35c76024614090000000000ffffffff'),
            )),
            TxAck(tx=TransactionType(outputs=[out1])),

            TxRequest(request_type=TXOUTPUT, details=TxRequestDetailsType(request_index=1, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized out1
                serialized_tx=unhexlify('02404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987'),
                signature_index=None,
                signature=None,
            )),
            TxAck(tx=TransactionType(outputs=[out2])),

            # segwit
            TxRequest(request_type=TXINPUT, details=TxRequestDetailsType(request_index=0, tx_hash=None), serialized=TxRequestSerializedType(
                # returned serialized out2
                serialized_tx=unhexlify('a8386f0000000000160014d16b8c0680c61fc6ed2e407455715055e41052f5'),
                signature_index=None,
                signature=None,
            )),
            TxAck(tx=TransactionType(inputs=[inp1])),

            TxRequest(request_type=TXFINISHED, details=None, serialized=TxRequestSerializedType(
                serialized_tx=unhexlify('02483045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b950121033add1f0e8e3c3136f7428dd4a4de1057380bd311f5b0856e2269170b4ffa65bf00000000'),
                signature_index=0,
                signature=unhexlify('3045022100a7ca8f097525f9044e64376dc0a0f5d4aeb8d15d66808ba97979a0475b06b66502200597c8ebcef63e047f9aeef1a8001d3560470cf896c12f6990eec4faec599b95'),
            )),
        ]

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)
    def test_send_p2wpkh_in_p2sh_attack_amount(self):

        coin = coins.by_name('Testnet')

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, 'secp256k1')

        inp1 = TxInputType(
            # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
            amount=10,
            prev_hash=unhexlify(
                '20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337'
            ),
            prev_index=0,
            script_type=InputScriptType.SPENDP2SHWITNESS,
            sequence=0xffffffff,
            multisig=None,
        )
        inpattack = TxInputType(
            # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
            amount=9,  # modified!
            prev_hash=unhexlify(
                '20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337'
            ),
            prev_index=0,
            script_type=InputScriptType.SPENDP2SHWITNESS,
            sequence=0xffffffff,
            multisig=None,
        )
        out1 = TxOutputType(
            address='mhRx1CeVfaayqRwq5zgRQmD7W5aWBfD5mC',
            amount=8,
            script_type=OutputScriptType.PAYTOADDRESS,
            address_n=None,
        )
        out2 = TxOutputType(
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
            script_type=OutputScriptType.PAYTOP2SHWITNESS,
            amount=1,
            address=None,
        )
        tx = SignTx(coin_name='Testnet',
                    version=None,
                    lock_time=None,
                    inputs_count=1,
                    outputs_count=2)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inpattack])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin),
            True,
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=1,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out2])),
            signing.UiConfirmTotal(8, 0, coin),
            True,
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized inpattack
                    serialized_tx=unhexlify(
                        '0100000000010137c361fb8f2d9056ba8c98c5611930fcb48cacfdd0fe2e0449d83eea982f91200000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5ffffffff'
                    ), )),
            # the out has to be cloned not to send the same object which was modified
            TxAck(tx=TransactionType(outputs=[TxOutputType(**out1.__dict__)])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=1, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out1
                    serialized_tx=unhexlify(
                        '0208000000000000001976a91414fdede0ddc3be652a0ce1afbc1b509a55b6b94888ac'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(outputs=[TxOutputType(**out2.__dict__)])),

            # segwit
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out2
                    serialized_tx=unhexlify(
                        '010000000000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXFINISHED, details=None)
        ]

        signer = signing.sign_tx(tx, root)
        i = 0
        messages_count = int(len(messages) / 2)
        for request, response in chunks(messages, 2):
            if i == messages_count - 1:  # last message should throw SigningError
                self.assertRaises(signing.SigningError, signer.send, request)
            else:
                self.assertEqualEx(signer.send(request), response)
            i += 1
        with self.assertRaises(StopIteration):
            signer.send(None)
    def test_send_p2wpkh_in_p2sh(self):

        coin = coins.by_name('Testnet')

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, 'secp256k1')

        inp1 = TxInputType(
            # 49'/1'/0'/1/0" - 2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX
            address_n=[49 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 1, 0],
            amount=123456789,
            prev_hash=unhexlify(
                '20912f98ea3ed849042efed0fdac8cb4fc301961c5988cba56902d8ffb61c337'
            ),
            prev_index=0,
            script_type=InputScriptType.SPENDP2SHWITNESS,
            sequence=0xffffffff,
            multisig=None,
        )
        out1 = TxOutputType(
            address='mhRx1CeVfaayqRwq5zgRQmD7W5aWBfD5mC',
            amount=12300000,
            script_type=OutputScriptType.PAYTOADDRESS,
            address_n=None,
        )
        out2 = TxOutputType(
            address='2N1LGaGg836mqSQqiuUBLfcyGBhyZbremDX',
            script_type=OutputScriptType.PAYTOADDRESS,
            amount=123456789 - 11000 - 12300000,
            address_n=None,
        )
        tx = SignTx(coin_name='Testnet',
                    version=None,
                    lock_time=None,
                    inputs_count=1,
                    outputs_count=2)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin),
            True,
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=1,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out2])),
            signing.UiConfirmOutput(out2, coin),
            True,
            signing.UiConfirmTotal(123445789, 11000, coin),
            True,

            # sign tx
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized inp1
                    serialized_tx=unhexlify(
                        '0100000000010137c361fb8f2d9056ba8c98c5611930fcb48cacfdd0fe2e0449d83eea982f91200000000017160014d16b8c0680c61fc6ed2e407455715055e41052f5ffffffff'
                    ), )),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=1, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out1
                    serialized_tx=unhexlify(
                        '02e0aebb00000000001976a91414fdede0ddc3be652a0ce1afbc1b509a55b6b94888ac'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(outputs=[out2])),

            # segwit
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out2
                    serialized_tx=unhexlify(
                        '3df39f060000000017a91458b53ea7f832e8f096e896b8713a8c6df0e892ca87'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXFINISHED,
                details=None,
                serialized=TxRequestSerializedType(
                    serialized_tx=unhexlify(
                        '02483045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b012103e7bfe10708f715e8538c92d46ca50db6f657bbc455b7494e6a0303ccdb868b7900000000'
                    ),
                    signature_index=0,
                    signature=unhexlify(
                        '3045022100ccd253bfdf8a5593cd7b6701370c531199f0f05a418cd547dfc7da3f21515f0f02203fa08a0753688871c220648f9edadbdb98af42e5d8269364a326572cf703895b'
                    ),
                )),
        ]

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)
Ejemplo n.º 11
0
    def test_send_native_p2wpkh(self):

        coin = coins.by_name('Groestlcoin Testnet')

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, coin.curve_name)

        inp1 = TxInputType(
            # 84'/1'/0'/0/0" - tgrs1qkvwu9g3k2pdxewfqr7syz89r3gj557l3ued7ja
            address_n=[84 | 0x80000000, 1 | 0x80000000, 0 | 0x80000000, 0, 0],
            amount=12300000,
            prev_hash=unhexlify(
                '4f2f857f39ed1afe05542d058fb0be865a387446e32fc876d086203f483f61d1'
            ),
            prev_index=0,
            script_type=InputScriptType.SPENDWITNESS,
            sequence=0xfffffffe,
            multisig=None,
        )
        out1 = TxOutputType(
            address='2N4Q5FhU2497BryFfUgbqkAJE87aKDv3V3e',
            amount=5000000,
            script_type=OutputScriptType.PAYTOADDRESS,
            address_n=[],
            multisig=None,
        )
        out2 = TxOutputType(
            address='tgrs1qejqxwzfld7zr6mf7ygqy5s5se5xq7vmt9lkd57',
            script_type=OutputScriptType.PAYTOADDRESS,
            amount=12300000 - 11000 - 5000000,
            address_n=[],
            multisig=None,
        )
        tx = SignTx(coin_name='Groestlcoin Testnet',
                    version=None,
                    lock_time=650713,
                    inputs_count=1,
                    outputs_count=2)

        messages = [
            None,

            # check fee
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin),
            True,
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=1,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out2])),
            signing.UiConfirmOutput(out2, coin),
            True,
            signing.UiConfirmTotal(12300000, 11000, coin),
            True,

            # sign tx
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized inp1
                    serialized_tx=unhexlify(
                        '01000000000101d1613f483f2086d076c82fe34674385a86beb08f052d5405fe1aed397f852f4f0000000000feffffff'
                    ), )),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=1, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out1
                    serialized_tx=unhexlify(
                        '02404b4c000000000017a9147a55d61848e77ca266e79a39bfc85c580a6426c987'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(outputs=[out2])),

            # segwit
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    # returned serialized out2
                    serialized_tx=unhexlify(
                        'a8386f0000000000160014cc8067093f6f843d6d3e22004a4290cd0c0f336b'
                    ),
                    signature_index=None,
                    signature=None,
                )),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXFINISHED,
                details=None,
                serialized=TxRequestSerializedType(
                    serialized_tx=unhexlify(
                        '02483045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3012103adc58245cf28406af0ef5cc24b8afba7f1be6c72f279b642d85c48798685f862d9ed0900'
                    ),
                    signature_index=0,
                    signature=unhexlify(
                        '3045022100ea8780bc1e60e14e945a80654a41748bbf1aa7d6f2e40a88d91dfc2de1f34bd10220181a474a3420444bd188501d8d270736e1e9fe379da9970de992ff445b0972e3'
                    ),
                )),
        ]

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)
Ejemplo n.º 12
0
    def test_one_one_fee(self):
        # http://groestlsight.groestlcoin.org/tx/f56521b17b828897f72b30dd21b0192fd942342e89acbb06abf1d446282c30f5
        # ptx1: http://groestlsight.groestlcoin.org/api/tx/cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a

        coin = coins.by_name('Groestlcoin')

        ptx1 = TransactionType(version=1,
                               lock_time=2160993,
                               inputs_cnt=1,
                               outputs_cnt=1,
                               extra_data_len=0)
        pinp1 = TxInputType(
            script_sig=unhexlify(
                '48304502210096a287593b1212a188e778596eb8ecd4cc169b93a4d115226460d8e3deae431c02206c78ec09b3df977f04a6df5eb53181165c4ea5a0b35f826551349130f879d6b8012102cf5126ff54e38a80a919579d7091cafe24840eab1d30fe2b4d59bdd9d267cad8'
            ),
            prev_hash=unhexlify(
                '7dc74a738c50c2ae1228ce9890841e5355fd6d7f2c1367e0a74403ab60db3224'
            ),
            prev_index=0,
            script_type=None,
            sequence=4294967294)
        pout1 = TxOutputBinType(script_pubkey=unhexlify(
            '76a914172b4e06e9b7881a48d2ee8062b495d0b2517fe888ac'),
                                amount=210016)

        inp1 = TxInputType(
            address_n=[44 | 0x80000000, 17 | 0x80000000, 0 | 0x80000000, 0,
                       2],  #  FXHDsC5ZqWQHkDmShzgRVZ1MatpWhwxTAA
            prev_hash=unhexlify(
                'cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a'
            ),
            prev_index=0,
            amount=None,
            script_type=None,
            multisig=None,
            sequence=None)
        out1 = TxOutputType(address='FtM4zAn9aVYgHgxmamWBgWPyZsb6RhvkA9',
                            amount=210016 - 192,
                            script_type=OutputScriptType.PAYTOADDRESS,
                            address_n=[],
                            multisig=None)
        tx = SignTx(coin_name='Groestlcoin',
                    version=None,
                    lock_time=None,
                    inputs_count=1,
                    outputs_count=1)

        messages = [
            None,
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None)),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(
                request_type=TXMETA,
                details=TxRequestDetailsType(
                    request_index=None,
                    tx_hash=unhexlify(
                        'cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a'
                    )),
                serialized=None),
            TxAck(tx=ptx1),
            TxRequest(
                request_type=TXINPUT,
                details=TxRequestDetailsType(
                    request_index=0,
                    tx_hash=unhexlify(
                        'cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a'
                    )),
                serialized=None),
            TxAck(tx=TransactionType(inputs=[pinp1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(
                    request_index=0,
                    tx_hash=unhexlify(
                        'cb74c8478c5814742c87cffdb4a21231869888f8042fb07a90e015a9db1f9d4a'
                    )),
                serialized=None),
            TxAck(tx=TransactionType(bin_outputs=[pout1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            signing.UiConfirmOutput(out1, coin),
            True,
            signing.UiConfirmTotal(210016, 192, coin),
            True,
            # ButtonRequest(code=ButtonRequest_ConfirmOutput),
            # ButtonRequest(code=ButtonRequest_SignTx),
            TxRequest(request_type=TXINPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(inputs=[inp1])),
            TxRequest(request_type=TXOUTPUT,
                      details=TxRequestDetailsType(request_index=0,
                                                   tx_hash=None),
                      serialized=None),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXOUTPUT,
                details=TxRequestDetailsType(request_index=0, tx_hash=None),
                serialized=TxRequestSerializedType(
                    signature_index=0,
                    signature=unhexlify(
                        '304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a74302368761'
                    ),
                    serialized_tx=unhexlify(
                        '01000000014a9d1fdba915e0907ab02f04f88898863112a2b4fdcf872c7414588c47c874cb000000006a47304402201fb96d20d0778f54520ab59afe70d5fb20e500ecc9f02281cf57934e8029e8e10220383d5a3e80f2e1eb92765b6da0f23d454aecbd8236f083d483e9a7430236876101210331693756f749180aeed0a65a0fab0625a2250bd9abca502282a4cf0723152e67ffffffff'
                    ))),
            TxAck(tx=TransactionType(outputs=[out1])),
            TxRequest(
                request_type=TXFINISHED,
                details=None,
                serialized=TxRequestSerializedType(
                    signature_index=None,
                    signature=None,
                    serialized_tx=unhexlify(
                        '01a0330300000000001976a914fe40329c95c5598ac60752a5310b320cb52d18e688ac00000000'
                    ),
                )),
        ]

        seed = bip39.seed(' '.join(['all'] * 12), '')
        root = bip32.from_seed(seed, coin.curve_name)

        signer = signing.sign_tx(tx, root)
        for request, response in chunks(messages, 2):
            self.assertEqualEx(signer.send(request), response)
        with self.assertRaises(StopIteration):
            signer.send(None)