コード例 #1
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_chain_pubkey_derivation(self):
        account_master_pubkeys = self.wallet.accounts["0"].get_master_pubkeys()
        x1_btc_pubkey = bip32_public_derivation(
            self.wallet.master_public_keys.get("x1/"), "", "/0")
        self.assertEqual(
            'xpub6CfssEAJDCoTHU922RJy8oyXkdPNP8sMFxorzG9ncAbZjZRKCq5NFdRVybzvqHSPntpRDfHtGErXPbk1Y9uAJGJLZFtscVCMZP7mnRFqyQX',
            account_master_pubkeys[0])
        x2_btc_pubkey = bip32_public_derivation(
            self.wallet.master_public_keys.get("x2/"), "", "/0")
        self.assertEqual(
            'xpub6Ckpjg1oUbAUwXAChU3eWAovMZTWmdMLFskZvRbVTbd8QNM5XG1WdBDubzFAkJjMMktsRRyyzhNKPuYaGNgroYuaz8R3fCGiLWBvmbXX1F2',
            account_master_pubkeys[1])

        # switch chains
        self._switch_chain("MZC")
        account_master_pubkeys = self.wallet.accounts["0"].get_master_pubkeys()
        x1_mzc_pubkey = bip32_public_derivation(
            self.wallet.master_public_keys.get("x2/"), "", "/13")
        self.assertEqual(
            'xpub6CfssEAJDCoTrhLTgjvQU5PYkwT81bBvuBsnVJ1eP2XDxhNLfbVDHC8G9kxwcSpAtGFEoLqkUrz64nV59kV8fDqkFc3xjn6nUbtiwmQzrRe',
            account_master_pubkeys[0])
        x2_mzc_pubkey = bip32_public_derivation(
            self.wallet.master_public_keys.get("x2/"), "", "/13")
        self.assertEqual(
            'xpub6Ckpjg1oUbAVWUPSbpbSkNEieqQyxnFCbJG2EnR6AnZUZWuxD6WCDwVQScUaLcUHmbBEuJfM8HCw912QXNGN9FHLQzzPgvsnxMt1YTzbeys',
            account_master_pubkeys[1])
コード例 #2
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_redeem_script(self):
        acc = self.wallet.accounts["0"]

        x1_first_btc_key = bip32_public_derivation(
            self.wallet.master_public_keys.get("x1/"), "", "/0/0/0")
        x2_first_btc_key = bip32_public_derivation(
            self.wallet.master_public_keys.get("x2/"), "", "/0/0/0")
        x3_first_btc_key = bip32_public_derivation(
            self.wallet.master_public_keys.get("x3/"), "", "/0/0/0")
        x4_first_btc_key = bip32_public_derivation(
            self.wallet.master_public_keys.get("x4/"), "", "/0/0/0")
        x_pubkeys = [
            x1_first_btc_key, x2_first_btc_key, x3_first_btc_key,
            x4_first_btc_key
        ]
        raw_pubkeys = map(lambda x: deserialize_xkey(x)[4], x_pubkeys)
        pubkeys = map(lambda x: x.encode('hex'), raw_pubkeys)

        # Compare redeem script to manually calculated one
        redeem_script = multisig_script(sorted(pubkeys), acc.multisig_m)
        self.assertEqual(
            '53210278a1a7de63493a8c8e0e7f4ebb13fd2a8144db25bb3bc2e5f44127a851a389332102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba210312872f0aa80fa1a9bc7df77fa5be310f5441f7bfec798fe19209b04954dec8da54ae',
            redeem_script)
        p2sh_addr = hash_160_to_bc_address(
            hash_160(redeem_script.decode('hex')),
            self.wallet.active_chain.p2sh_version)
        self.assertEqual("32Ktuh5jGEAAJyNXQE7f1LUAcMXSfvdSzE", p2sh_addr)
コード例 #3
0
ファイル: test_multisig.py プロジェクト: oktoshi/encompass
    def test_p2sh_address_creation(self):
        x1_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/0/0/0")
        x2_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/0/0/0")
        x_pubkeys = [x1_first_btc_key, x2_first_btc_key]
        raw_pubkeys = map( lambda x: deserialize_xkey(x)[4], x_pubkeys )
        pubkeys = map( lambda x: x.encode('hex'), raw_pubkeys )

        # Compare redeem script to manually calculated one
        redeem_script = Transaction.multisig_script(sorted(pubkeys), 2)
        self.assertEqual('522102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba52ae',
            redeem_script)

        p2sh_addr = hash_160_to_bc_address( hash_160(redeem_script.decode('hex')), self.wallet.active_chain.p2sh_version )
        self.assertEqual('3MqemPAHZDGLr537QBvU7i4dRFY3Xvad7X', p2sh_addr)

        # switch chains
        self._switch_chain("MZC")
        x1_first_mzc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/13/0/0")
        x2_first_mzc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/13/0/0")
        x_pubkeys = [x1_first_mzc_key, x2_first_mzc_key]
        raw_pubkeys = map( lambda x: deserialize_xkey(x)[4], x_pubkeys )
        pubkeys = map( lambda x: x.encode('hex'), raw_pubkeys )

        # Compare redeem script to manually calculated one
        redeem_script = Transaction.multisig_script(sorted(pubkeys), 2)
        self.assertEqual('5221027bdb7f5c42096580442e63235434bcc9ddf9689bbeb917705cd0edf9c6e264292102919725862f59a43274443ea11d7a8e25c15147213dcb6186c24d8629d37d6d8d52ae',
            redeem_script)

        p2sh_addr = hash_160_to_bc_address( hash_160(redeem_script.decode('hex')), self.wallet.active_chain.p2sh_version )
        self.assertEqual('4jjXnsGuWLH3YgnagWH12kK7HjDtsBv8SQ', p2sh_addr)
コード例 #4
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_p2sh_address_creation(self):
        x1_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/0/0/0")
        x2_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/0/0/0")
        x_pubkeys = [x1_first_btc_key, x2_first_btc_key]
        raw_pubkeys = map( lambda x: deserialize_xkey(x)[4], x_pubkeys )
        pubkeys = map( lambda x: x.encode('hex'), raw_pubkeys )

        # Compare redeem script to manually calculated one
        redeem_script = multisig_script(sorted(pubkeys), 2)
        self.assertEqual('522102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba52ae',
            redeem_script)

        p2sh_addr = hash_160_to_bc_address( hash_160(redeem_script.decode('hex')), self.wallet.active_chain.p2sh_version )
        self.assertEqual('3MqemPAHZDGLr537QBvU7i4dRFY3Xvad7X', p2sh_addr)

        # switch chains
        self._switch_chain("MZC")
        x1_first_mzc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/13/0/0")
        x2_first_mzc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/13/0/0")
        x_pubkeys = [x1_first_mzc_key, x2_first_mzc_key]
        raw_pubkeys = map( lambda x: deserialize_xkey(x)[4], x_pubkeys )
        pubkeys = map( lambda x: x.encode('hex'), raw_pubkeys )

        # Compare redeem script to manually calculated one
        redeem_script = multisig_script(sorted(pubkeys), 2)
        self.assertEqual('5221027bdb7f5c42096580442e63235434bcc9ddf9689bbeb917705cd0edf9c6e264292102919725862f59a43274443ea11d7a8e25c15147213dcb6186c24d8629d37d6d8d52ae',
            redeem_script)

        p2sh_addr = hash_160_to_bc_address( hash_160(redeem_script.decode('hex')), self.wallet.active_chain.p2sh_version )
        self.assertEqual('4jjXnsGuWLH3YgnagWH12kK7HjDtsBv8SQ', p2sh_addr)
コード例 #5
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_redeem_script(self):
        acc = self.wallet.accounts["0"]

        x1_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/0/0/0")
        x2_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/0/0/0")
        x3_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x3/"), "", "/0/0/0")
        x4_first_btc_key = bip32_public_derivation(self.wallet.master_public_keys.get("x4/"), "", "/0/0/0")
        x_pubkeys = [x1_first_btc_key, x2_first_btc_key, x3_first_btc_key, x4_first_btc_key]
        raw_pubkeys = map( lambda x: deserialize_xkey(x)[4], x_pubkeys )
        pubkeys = map( lambda x: x.encode('hex'), raw_pubkeys )

        # Compare redeem script to manually calculated one
        redeem_script = multisig_script(sorted(pubkeys), acc.multisig_m)
        self.assertEqual('53210278a1a7de63493a8c8e0e7f4ebb13fd2a8144db25bb3bc2e5f44127a851a389332102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba210312872f0aa80fa1a9bc7df77fa5be310f5441f7bfec798fe19209b04954dec8da54ae', redeem_script)
        p2sh_addr = hash_160_to_bc_address( hash_160(redeem_script.decode('hex')), self.wallet.active_chain.p2sh_version )
        self.assertEqual("32Ktuh5jGEAAJyNXQE7f1LUAcMXSfvdSzE", p2sh_addr)
コード例 #6
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_chain_pubkey_derivation(self):
        account_master_pubkeys = self.wallet.accounts["0"].get_master_pubkeys()
        x1_btc_pubkey = bip32_public_derivation(self.wallet.master_public_keys.get("x1/"), "", "/0")
        self.assertEqual('xpub6CfssEAJDCoTHU922RJy8oyXkdPNP8sMFxorzG9ncAbZjZRKCq5NFdRVybzvqHSPntpRDfHtGErXPbk1Y9uAJGJLZFtscVCMZP7mnRFqyQX',
            account_master_pubkeys[0])
        x2_btc_pubkey = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/0")
        self.assertEqual('xpub6Ckpjg1oUbAUwXAChU3eWAovMZTWmdMLFskZvRbVTbd8QNM5XG1WdBDubzFAkJjMMktsRRyyzhNKPuYaGNgroYuaz8R3fCGiLWBvmbXX1F2',
            account_master_pubkeys[1])

        # switch chains
        self._switch_chain("MZC")
        account_master_pubkeys = self.wallet.accounts["0"].get_master_pubkeys()
        x1_mzc_pubkey = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/13")
        self.assertEqual('xpub6CfssEAJDCoTrhLTgjvQU5PYkwT81bBvuBsnVJ1eP2XDxhNLfbVDHC8G9kxwcSpAtGFEoLqkUrz64nV59kV8fDqkFc3xjn6nUbtiwmQzrRe',
            account_master_pubkeys[0])
        x2_mzc_pubkey = bip32_public_derivation(self.wallet.master_public_keys.get("x2/"), "", "/13")
        self.assertEqual('xpub6Ckpjg1oUbAVWUPSbpbSkNEieqQyxnFCbJG2EnR6AnZUZWuxD6WCDwVQScUaLcUHmbBEuJfM8HCw912QXNGN9FHLQzzPgvsnxMt1YTzbeys',
            account_master_pubkeys[1])
コード例 #7
0
ファイル: test_bitcoin.py プロジェクト: romeo1m/electrum-ltc
    def _do_test_bip32(self, seed, sequence):
        xprv, xpub = bip32_root(bfh(seed), 'standard')
        self.assertEqual("m/", sequence[0:2])
        path = 'm'
        sequence = sequence[2:]
        for n in sequence.split('/'):
            child_path = path + '/' + n
            if n[-1] != "'":
                xpub2 = bip32_public_derivation(xpub, path, child_path)
            xprv, xpub = bip32_private_derivation(xprv, path, child_path)
            if n[-1] != "'":
                self.assertEqual(xpub, xpub2)
            path = child_path

        return xpub, xprv
コード例 #8
0
    def _do_test_bip32(self, seed, sequence, testnet):
        xprv, xpub = bip32_root(seed.decode('hex'), testnet)
        assert sequence[0:2] == "m/"
        path = 'm'
        sequence = sequence[2:]
        for n in sequence.split('/'):
            child_path = path + '/' + n
            if n[-1] != "'":
                xpub2 = bip32_public_derivation(xpub, path, child_path, testnet)
            xprv, xpub = bip32_private_derivation(xprv, path, child_path, testnet)
            if n[-1] != "'":
                assert xpub == xpub2
            path = child_path

        return xpub, xprv
コード例 #9
0
ファイル: test_bitcoin.py プロジェクト: nvk/electrum
    def _do_test_bip32(self, seed, sequence):
        xprv, xpub = bip32_root(bfh(seed), 'standard')
        self.assertEqual("m/", sequence[0:2])
        path = 'm'
        sequence = sequence[2:]
        for n in sequence.split('/'):
            child_path = path + '/' + n
            if n[-1] != "'":
                xpub2 = bip32_public_derivation(xpub, path, child_path)
            xprv, xpub = bip32_private_derivation(xprv, path, child_path)
            if n[-1] != "'":
                self.assertEqual(xpub, xpub2)
            path = child_path

        return xpub, xprv
コード例 #10
0
    def _do_test_bip32(self, seed, sequence, testnet):
        xprv, xpub = bip32_root(seed.decode('hex'), testnet)
        assert sequence[0:2] == "m/"
        path = 'm'
        sequence = sequence[2:]
        for n in sequence.split('/'):
            child_path = path + '/' + n
            if n[-1] != "'":
                xpub2 = bip32_public_derivation(xpub, path, child_path, testnet)
            xprv, xpub = bip32_private_derivation(xprv, path, child_path, testnet)
            if n[-1] != "'":
                assert xpub == xpub2
            path = child_path

        return xpub, xprv
コード例 #11
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_transaction(self):

        wallet_keys = {
            'xpub6GDQf5vZmrpQvD4ixNdqHmgSZ76Uo2Cg5isBupnvZpnNbhdRhgdhq9hkfCSKRE31rGfYuXNfZ5gTamFkj1GXt6k87MD1hUn28tuvLHY71Bk':
            'L2FQCaHPwgS4CmAf6bKtbjVWDbcHv42c72by1zLEyLuDrUG22CwM',
            'xpub6GLs33TeHkrLSTJ2uxiMLnuqxCHG9iBFCwjTwyg4EvzyxUi78U1sXxxRPUQfLGNEZRT3yYKEwR39ZbUtofEgcmTLtJdSetnFiQPEwTZRW5y':
            'L1aD1WSA3UGU56sAmjfYVj1rK3fnSzWKj2wTsDTN1DpgUgPVwQCa',
            'xpub6Fc64k9RTc79yD7xErF2yKSdUraGBhGWDt1FomUFVCFg52165LZvvoGL59hebJBGtauFqNL5zMeRgPGV29sfQp6XqoiiD9E53UDatBhFZuk':
            'L25eCRYrDNVNrTZV1XZhmaZti3dVsZz3egm1R7LsPHRdpYuyLYKE'
            #            'xpub6GiSmJrVQC5q2m5cRcZvUgnGUsfeEqi3eEfUTgacnA33G8PAQnJeeMzpNAGUA9JL3goUui7BY52rVPwhmxMALkmFh5ZuwJDKrPv8ERkG3CK': 'L3jUPoR7fUwB9mwfuqqF79mHDpj5rpygQhdWntJ9ShZ9nbyRab5h'
        }

        acc = self.wallet.accounts["0"]
        redeem_script = '53210278a1a7de63493a8c8e0e7f4ebb13fd2a8144db25bb3bc2e5f44127a851a389332102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba210312872f0aa80fa1a9bc7df77fa5be310f5441f7bfec798fe19209b04954dec8da54ae'

        coins = [{
            'address': '32SbQbBthcMzRSpCw1ifAXqWviJGH5HKUk',
            'value': 600000,
            'prevout_n': 0,
            'prevout_hash':
            '1111111111111111111111111111111111111111111111111111111111111111',
            'height': 100000,
            'coinbase': 'True'
        }]

        txin = coins[0]

        x_pubkeys = map(lambda x: bip32_public_derivation(x, "", "/0/0/0"),
                        self.wallet.master_public_keys.values())
        pubkeys = map(lambda x: deserialize_xkey(x)[4].encode('hex'),
                      x_pubkeys)

        s = ''.join(map(lambda x: int_to_hex(x, 2), (0, 0)))
        x_pubkeys = map(
            lambda x: 'ff' + DecodeBase58Check(x).encode('hex') + s, x_pubkeys)
        pubkeys, x_pubkeys = zip(*sorted(zip(pubkeys, x_pubkeys)))
        txin['pubkeys'] = list(pubkeys)
        txin['x_pubkeys'] = list(x_pubkeys)
        txin['signatures'] = [None] * len(pubkeys)
        txin['redeemScript'] = redeem_script
        txin['num_sig'] = acc.multisig_m

        outputs = [('address', '1PyXgL1qmZPuxcVi9CcguQb3v7WUvQZBud', 500000)]
        inputs = []
        tx = Transaction(inputs, outputs)
        tx.add_input(txin)
        self.wallet.sign_transaction(tx, "secret")

        #
        ins = tx.inputs_to_sign()
        keypairs = {}
        sec = None
        for innard in ins:
            # this is easier than the commented loop below
            in_xpub, _ = BIP32_Account.parse_xpubkey(innard)
            if wallet_keys.get(in_xpub):
                keypairs[innard] = wallet_keys[in_xpub]
            # ...


#            in_xpub, in_seq = BIP32_Account.parse_xpubkey(innard)
#            sec = None
#            for k, vaccount in self.wallet.accounts.items():
#                acc_v = vaccount.get_master_pubkeys()[0]
#                acc_xpub = bip32_public_derivation(acc_v, "", "/0/0")
#                if in_xpub == acc_xpub:
#                    pk = vaccount.get_private_key(in_seq, self.wallet, "secret")
#                    sec = pk[0]

#            if sec:
#                keypairs [ innard ] = sec

        if keypairs:
            tx.sign(keypairs)
        self.assertEqual(
            '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',
            str(tx))

        ###########
        #
        serialized_tx = str(tx)
        tx2 = Transaction.deserialize(serialized_tx,
                                      active_chain=self.wallet.active_chain)
        self.assertEquals(4, len(tx2.inputs[0]['x_pubkeys']))
        self.assertEquals(3, tx2.inputs[0]['num_sig'])
コード例 #12
0
ファイル: test_multisig.py プロジェクト: martexcoin/encompass
    def test_transaction(self):

        wallet_keys = {
            'xpub6GDQf5vZmrpQvD4ixNdqHmgSZ76Uo2Cg5isBupnvZpnNbhdRhgdhq9hkfCSKRE31rGfYuXNfZ5gTamFkj1GXt6k87MD1hUn28tuvLHY71Bk': 'L2FQCaHPwgS4CmAf6bKtbjVWDbcHv42c72by1zLEyLuDrUG22CwM',
            'xpub6GLs33TeHkrLSTJ2uxiMLnuqxCHG9iBFCwjTwyg4EvzyxUi78U1sXxxRPUQfLGNEZRT3yYKEwR39ZbUtofEgcmTLtJdSetnFiQPEwTZRW5y': 'L1aD1WSA3UGU56sAmjfYVj1rK3fnSzWKj2wTsDTN1DpgUgPVwQCa',
            'xpub6Fc64k9RTc79yD7xErF2yKSdUraGBhGWDt1FomUFVCFg52165LZvvoGL59hebJBGtauFqNL5zMeRgPGV29sfQp6XqoiiD9E53UDatBhFZuk': 'L25eCRYrDNVNrTZV1XZhmaZti3dVsZz3egm1R7LsPHRdpYuyLYKE'
#            'xpub6GiSmJrVQC5q2m5cRcZvUgnGUsfeEqi3eEfUTgacnA33G8PAQnJeeMzpNAGUA9JL3goUui7BY52rVPwhmxMALkmFh5ZuwJDKrPv8ERkG3CK': 'L3jUPoR7fUwB9mwfuqqF79mHDpj5rpygQhdWntJ9ShZ9nbyRab5h'
        }

        acc = self.wallet.accounts["0"]
        redeem_script = '53210278a1a7de63493a8c8e0e7f4ebb13fd2a8144db25bb3bc2e5f44127a851a389332102ee780aa224c9fe54caff984205077b7cca08ced3188a3f3c639d83deda6b9a592103124429ddbed55593d0abea0d0d3d283eca4546e40017b2945f4666c561b494ba210312872f0aa80fa1a9bc7df77fa5be310f5441f7bfec798fe19209b04954dec8da54ae'

        coins = [ {'address': '32SbQbBthcMzRSpCw1ifAXqWviJGH5HKUk',
            'value': 600000,
            'prevout_n': 0,
            'prevout_hash': '1111111111111111111111111111111111111111111111111111111111111111',
            'height': 100000,
            'coinbase': 'True'
            } ]

        txin = coins[0]

        x_pubkeys = map( lambda x:bip32_public_derivation(x, "", "/0/0/0"), self.wallet.master_public_keys.values() )
        pubkeys = map(lambda x: deserialize_xkey(x)[4].encode('hex'), x_pubkeys)

        s = ''.join( map(lambda x: int_to_hex(x, 2), (0, 0)))
        x_pubkeys = map( lambda x: 'ff' + DecodeBase58Check(x).encode('hex') + s, x_pubkeys)
        pubkeys, x_pubkeys = zip( *sorted(zip(pubkeys, x_pubkeys)))
        txin['pubkeys'] = list(pubkeys)
        txin['x_pubkeys'] = list(x_pubkeys)
        txin['signatures'] = [None] * len(pubkeys)
        txin['redeemScript'] = redeem_script
        txin['num_sig'] = acc.multisig_m

        outputs = [ ('address', '1PyXgL1qmZPuxcVi9CcguQb3v7WUvQZBud', 500000) ]
        inputs = []
        tx = Transaction(inputs, outputs)
        tx.add_input(txin)
        self.wallet.sign_transaction(tx, "secret")

        #
        ins = tx.inputs_to_sign()
        keypairs = {}
        sec = None
        for innard in ins:
            # this is easier than the commented loop below
            in_xpub, _ = BIP32_Account.parse_xpubkey(innard)
            if wallet_keys.get(in_xpub):
                keypairs[ innard ] = wallet_keys[in_xpub]
            # ...
#            in_xpub, in_seq = BIP32_Account.parse_xpubkey(innard)
#            sec = None
#            for k, vaccount in self.wallet.accounts.items():
#                acc_v = vaccount.get_master_pubkeys()[0]
#                acc_xpub = bip32_public_derivation(acc_v, "", "/0/0")
#                if in_xpub == acc_xpub:
#                    pk = vaccount.get_private_key(in_seq, self.wallet, "secret")
#                    sec = pk[0]

#            if sec:
#                keypairs [ innard ] = sec

        if keypairs:
            tx.sign(keypairs)
        self.assertEqual('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', str(tx))

        ###########
        #
        serialized_tx = str(tx)
        tx2 = Transaction.deserialize(serialized_tx, active_chain = self.wallet.active_chain)
        self.assertEquals(4, len(  tx2.inputs[0]['x_pubkeys'])  )
        self.assertEquals(3, tx2.inputs[0]['num_sig']  )