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Make descriptor checksums mandatory in deriveaddresses and importmulti

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pull/643/head
Pieter Wuille 6 years ago
parent b52cb63688
commit be62903c41
4 changed files with 45 additions and 31 deletions
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4
src/rpc/misc.cpp
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@ -207,7 +207,7 @@ UniValue deriveaddresses(const JSONRPCRequest& request)
}, },
RPCExamples{ RPCExamples{
"First three native segwit receive addresses\n" + "First three native segwit receive addresses\n" +
HelpExampleCli("deriveaddresses", "\"wpkh([d34db33f/84h/0h/0h]xpub6DJ2dNUysrn5Vt36jH2KLBT2i1auw1tTSSomg8PhqNiUtx8QX2SvC9nrHu81fT41fvDUnhMjEzQgXnQjKEu3oaqMSzhSrHMxyyoEAmUHQbY/0/*)\" 0 2") HelpExampleCli("deriveaddresses", "\"wpkh([d34db33f/84h/0h/0h]xpub6DJ2dNUysrn5Vt36jH2KLBT2i1auw1tTSSomg8PhqNiUtx8QX2SvC9nrHu81fT41fvDUnhMjEzQgXnQjKEu3oaqMSzhSrHMxyyoEAmUHQbY/0/*)#trd0mf0l\" 0 2")
}}.ToString() }}.ToString()
); );
} }
@ -233,7 +233,7 @@ UniValue deriveaddresses(const JSONRPCRequest& request)
} }
FlatSigningProvider provider; FlatSigningProvider provider;
auto desc = Parse(desc_str, provider); auto desc = Parse(desc_str, provider, /* require_checksum = */ true);
if (!desc) { if (!desc) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid descriptor")); throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid descriptor"));
} }

2
src/wallet/rpcdump.cpp
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@ -1117,7 +1117,7 @@ static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID
const std::string& descriptor = data["desc"].get_str(); const std::string& descriptor = data["desc"].get_str();
FlatSigningProvider keys; FlatSigningProvider keys;
auto parsed_desc = Parse(descriptor, keys); auto parsed_desc = Parse(descriptor, keys, /* require_checksum = */ true);
if (!parsed_desc) { if (!parsed_desc) {
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Descriptor is invalid"); throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Descriptor is invalid");
} }

28
test/functional/rpc_deriveaddresses.py
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@ -4,6 +4,7 @@
# file COPYING or http://www.opensource.org/licenses/mit-license.php. # file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test the deriveaddresses rpc call.""" """Test the deriveaddresses rpc call."""
from test_framework.test_framework import BitcoinTestFramework from test_framework.test_framework import BitcoinTestFramework
from test_framework.descriptors import descsum_create
from test_framework.util import assert_equal, assert_raises_rpc_error from test_framework.util import assert_equal, assert_raises_rpc_error
class DeriveaddressesTest(BitcoinTestFramework): class DeriveaddressesTest(BitcoinTestFramework):
@ -14,36 +15,37 @@ class DeriveaddressesTest(BitcoinTestFramework):
def run_test(self): def run_test(self):
assert_raises_rpc_error(-5, "Invalid descriptor", self.nodes[0].deriveaddresses, "a") assert_raises_rpc_error(-5, "Invalid descriptor", self.nodes[0].deriveaddresses, "a")
descriptor = "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)" descriptor = "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)#t6wfjs64"
address = "bcrt1qjqmxmkpmxt80xz4y3746zgt0q3u3ferr34acd5" address = "bcrt1qjqmxmkpmxt80xz4y3746zgt0q3u3ferr34acd5"
assert_equal(self.nodes[0].deriveaddresses(descriptor), [address]) assert_equal(self.nodes[0].deriveaddresses(descriptor), [address])
descriptor_pubkey = "wpkh(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/0)" descriptor = descriptor[:-9]
address = "bcrt1qjqmxmkpmxt80xz4y3746zgt0q3u3ferr34acd5" assert_raises_rpc_error(-5, "Invalid descriptor", self.nodes[0].deriveaddresses, descriptor)
descriptor_pubkey = "wpkh(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/0)#s9ga3alw"
address = "bcrt1qjqmxmkpmxt80xz4y3746zgt0q3u3ferr34acd5"
assert_equal(self.nodes[0].deriveaddresses(descriptor_pubkey), [address]) assert_equal(self.nodes[0].deriveaddresses(descriptor_pubkey), [address])
ranged_descriptor = "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)" ranged_descriptor = "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)#kft60nuy"
assert_equal(self.nodes[0].deriveaddresses(ranged_descriptor, 0, 2), [address, "bcrt1qhku5rq7jz8ulufe2y6fkcpnlvpsta7rq4442dy", "bcrt1qpgptk2gvshyl0s9lqshsmx932l9ccsv265tvaq"]) assert_equal(self.nodes[0].deriveaddresses(ranged_descriptor, 0, 2), [address, "bcrt1qhku5rq7jz8ulufe2y6fkcpnlvpsta7rq4442dy", "bcrt1qpgptk2gvshyl0s9lqshsmx932l9ccsv265tvaq"])
assert_raises_rpc_error(-8, "Range should not be specified for an un-ranged descriptor", self.nodes[0].deriveaddresses, "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)", 0, 2) assert_raises_rpc_error(-8, "Range should not be specified for an un-ranged descriptor", self.nodes[0].deriveaddresses, descsum_create("wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)"), 0, 2)
assert_raises_rpc_error(-8, "Range must be specified for a ranged descriptor", self.nodes[0].deriveaddresses, "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)") assert_raises_rpc_error(-8, "Range must be specified for a ranged descriptor", self.nodes[0].deriveaddresses, descsum_create("wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)"))
assert_raises_rpc_error(-8, "Missing range end parameter", self.nodes[0].deriveaddresses, "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)", 0) assert_raises_rpc_error(-8, "Missing range end parameter", self.nodes[0].deriveaddresses, descsum_create("wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)"), 0)
assert_raises_rpc_error(-8, "Range end should be equal to or greater than begin", self.nodes[0].deriveaddresses, "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)", 2, 0) assert_raises_rpc_error(-8, "Range end should be equal to or greater than begin", self.nodes[0].deriveaddresses, descsum_create("wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)"), 2, 0)
assert_raises_rpc_error(-8, "Range should be greater or equal than 0", self.nodes[0].deriveaddresses, "wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)", -1, 0) assert_raises_rpc_error(-8, "Range should be greater or equal than 0", self.nodes[0].deriveaddresses, descsum_create("wpkh(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/*)"), -1, 0)
combo_descriptor = "combo(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)" combo_descriptor = descsum_create("combo(tprv8ZgxMBicQKsPd7Uf69XL1XwhmjHopUGep8GuEiJDZmbQz6o58LninorQAfcKZWARbtRtfnLcJ5MQ2AtHcQJCCRUcMRvmDUjyEmNUWwx8UbK/1/1/0)")
assert_equal(self.nodes[0].deriveaddresses(combo_descriptor), ["mtfUoUax9L4tzXARpw1oTGxWyoogp52KhJ", "mtfUoUax9L4tzXARpw1oTGxWyoogp52KhJ", address, "2NDvEwGfpEqJWfybzpKPHF2XH3jwoQV3D7x"]) assert_equal(self.nodes[0].deriveaddresses(combo_descriptor), ["mtfUoUax9L4tzXARpw1oTGxWyoogp52KhJ", "mtfUoUax9L4tzXARpw1oTGxWyoogp52KhJ", address, "2NDvEwGfpEqJWfybzpKPHF2XH3jwoQV3D7x"])
hardened_without_privkey_descriptor = "wpkh(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1'/1/0)" hardened_without_privkey_descriptor = descsum_create("wpkh(tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1'/1/0)")
assert_raises_rpc_error(-5, "Cannot derive script without private keys", self.nodes[0].deriveaddresses, hardened_without_privkey_descriptor) assert_raises_rpc_error(-5, "Cannot derive script without private keys", self.nodes[0].deriveaddresses, hardened_without_privkey_descriptor)
bare_multisig_descriptor = "multi(1, tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/0, tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/1)" bare_multisig_descriptor = descsum_create("multi(1,tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/0,tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B/1/1/1)")
assert_raises_rpc_error(-5, "Descriptor does not have a corresponding address", self.nodes[0].deriveaddresses, bare_multisig_descriptor) assert_raises_rpc_error(-5, "Descriptor does not have a corresponding address", self.nodes[0].deriveaddresses, bare_multisig_descriptor)
if __name__ == '__main__': if __name__ == '__main__':

42
test/functional/wallet_importmulti.py
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@ -20,6 +20,7 @@ from test_framework.script import (
OP_NOP, OP_NOP,
) )
from test_framework.test_framework import BitcoinTestFramework from test_framework.test_framework import BitcoinTestFramework
from test_framework.descriptors import descsum_create
from test_framework.util import ( from test_framework.util import (
assert_equal, assert_equal,
assert_greater_than, assert_greater_than,
@ -545,11 +546,22 @@ class ImportMultiTest(BitcoinTestFramework):
# Test importing of a P2SH-P2WPKH address via descriptor + private key # Test importing of a P2SH-P2WPKH address via descriptor + private key
key = get_key(self.nodes[0]) key = get_key(self.nodes[0])
self.log.info("Should import a p2sh-p2wpkh address from descriptor and private key") self.log.info("Should not import a p2sh-p2wpkh address from descriptor without checksum and private key")
self.test_importmulti({"desc": "sh(wpkh(" + key.pubkey + "))", self.test_importmulti({"desc": "sh(wpkh(" + key.pubkey + "))",
"timestamp": "now", "timestamp": "now",
"label": "Descriptor import test", "label": "Descriptor import test",
"keys": [key.privkey]}, "keys": [key.privkey]},
success=False,
error_code=-5,
error_message="Descriptor is invalid")
# Test importing of a P2SH-P2WPKH address via descriptor + private key
key = get_key(self.nodes[0])
self.log.info("Should import a p2sh-p2wpkh address from descriptor and private key")
self.test_importmulti({"desc": descsum_create("sh(wpkh(" + key.pubkey + "))"),
"timestamp": "now",
"label": "Descriptor import test",
"keys": [key.privkey]},
success=True) success=True)
test_address(self.nodes[1], test_address(self.nodes[1],
key.p2sh_p2wpkh_addr, key.p2sh_p2wpkh_addr,
@ -562,7 +574,7 @@ class ImportMultiTest(BitcoinTestFramework):
addresses = ["2N7yv4p8G8yEaPddJxY41kPihnWvs39qCMf", "2MsHxyb2JS3pAySeNUsJ7mNnurtpeenDzLA"] # hdkeypath=m/0'/0'/0' and 1' addresses = ["2N7yv4p8G8yEaPddJxY41kPihnWvs39qCMf", "2MsHxyb2JS3pAySeNUsJ7mNnurtpeenDzLA"] # hdkeypath=m/0'/0'/0' and 1'
desc = "sh(wpkh(" + xpriv + "/0'/0'/*'" + "))" desc = "sh(wpkh(" + xpriv + "/0'/0'/*'" + "))"
self.log.info("Ranged descriptor import should fail without a specified range") self.log.info("Ranged descriptor import should fail without a specified range")
self.test_importmulti({"desc": desc, self.test_importmulti({"desc": descsum_create(desc),
"timestamp": "now"}, "timestamp": "now"},
success=False, success=False,
error_code=-8, error_code=-8,
@ -570,7 +582,7 @@ class ImportMultiTest(BitcoinTestFramework):
# Test importing of a ranged descriptor without keys # Test importing of a ranged descriptor without keys
self.log.info("Should import the ranged descriptor with specified range as solvable") self.log.info("Should import the ranged descriptor with specified range as solvable")
self.test_importmulti({"desc": desc, self.test_importmulti({"desc": descsum_create(desc),
"timestamp": "now", "timestamp": "now",
"range": {"end": 1}}, "range": {"end": 1}},
success=True, success=True,
@ -583,7 +595,7 @@ class ImportMultiTest(BitcoinTestFramework):
# Test importing of a P2PKH address via descriptor # Test importing of a P2PKH address via descriptor
key = get_key(self.nodes[0]) key = get_key(self.nodes[0])
self.log.info("Should import a p2pkh address from descriptor") self.log.info("Should import a p2pkh address from descriptor")
self.test_importmulti({"desc": "pkh(" + key.pubkey + ")", self.test_importmulti({"desc": descsum_create("pkh(" + key.pubkey + ")"),
"timestamp": "now", "timestamp": "now",
"label": "Descriptor import test"}, "label": "Descriptor import test"},
True, True,
@ -597,7 +609,7 @@ class ImportMultiTest(BitcoinTestFramework):
# Test import fails if both desc and scriptPubKey are provided # Test import fails if both desc and scriptPubKey are provided
key = get_key(self.nodes[0]) key = get_key(self.nodes[0])
self.log.info("Import should fail if both scriptPubKey and desc are provided") self.log.info("Import should fail if both scriptPubKey and desc are provided")
self.test_importmulti({"desc": "pkh(" + key.pubkey + ")", self.test_importmulti({"desc": descsum_create("pkh(" + key.pubkey + ")"),
"scriptPubKey": {"address": key.p2pkh_addr}, "scriptPubKey": {"address": key.p2pkh_addr},
"timestamp": "now"}, "timestamp": "now"},
success=False, success=False,
@ -616,7 +628,7 @@ class ImportMultiTest(BitcoinTestFramework):
key1 = get_key(self.nodes[0]) key1 = get_key(self.nodes[0])
key2 = get_key(self.nodes[0]) key2 = get_key(self.nodes[0])
self.log.info("Should import a 1-of-2 bare multisig from descriptor") self.log.info("Should import a 1-of-2 bare multisig from descriptor")
self.test_importmulti({"desc": "multi(1," + key1.pubkey + "," + key2.pubkey + ")", self.test_importmulti({"desc": descsum_create("multi(1," + key1.pubkey + "," + key2.pubkey + ")"),
"timestamp": "now"}, "timestamp": "now"},
success=True) success=True)
self.log.info("Should not treat individual keys from the imported bare multisig as watchonly") self.log.info("Should not treat individual keys from the imported bare multisig as watchonly")
@ -635,7 +647,7 @@ class ImportMultiTest(BitcoinTestFramework):
pub_fpr = info['hdmasterfingerprint'] pub_fpr = info['hdmasterfingerprint']
result = self.nodes[0].importmulti( result = self.nodes[0].importmulti(
[{ [{
'desc' : "wpkh([" + pub_fpr + pub_keypath[1:] +"]" + pub + ")", 'desc' : descsum_create("wpkh([" + pub_fpr + pub_keypath[1:] +"]" + pub + ")"),
"timestamp": "now", "timestamp": "now",
}] }]
) )
@ -653,7 +665,7 @@ class ImportMultiTest(BitcoinTestFramework):
priv_fpr = info['hdmasterfingerprint'] priv_fpr = info['hdmasterfingerprint']
result = self.nodes[0].importmulti( result = self.nodes[0].importmulti(
[{ [{
'desc' : "wpkh([" + priv_fpr + priv_keypath[1:] + "]" + priv + ")", 'desc' : descsum_create("wpkh([" + priv_fpr + priv_keypath[1:] + "]" + priv + ")"),
"timestamp": "now", "timestamp": "now",
}] }]
) )
@ -701,12 +713,12 @@ class ImportMultiTest(BitcoinTestFramework):
pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey'] pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey']
result = wrpc.importmulti( result = wrpc.importmulti(
[{ [{
'desc': 'wpkh(' + pub1 + ')', 'desc': descsum_create('wpkh(' + pub1 + ')'),
'keypool': True, 'keypool': True,
"timestamp": "now", "timestamp": "now",
}, },
{ {
'desc': 'wpkh(' + pub2 + ')', 'desc': descsum_create('wpkh(' + pub2 + ')'),
'keypool': True, 'keypool': True,
"timestamp": "now", "timestamp": "now",
}] }]
@ -727,13 +739,13 @@ class ImportMultiTest(BitcoinTestFramework):
pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey'] pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey']
result = wrpc.importmulti( result = wrpc.importmulti(
[{ [{
'desc': 'wpkh(' + pub1 + ')', 'desc': descsum_create('wpkh(' + pub1 + ')'),
'keypool': True, 'keypool': True,
'internal': True, 'internal': True,
"timestamp": "now", "timestamp": "now",
}, },
{ {
'desc': 'wpkh(' + pub2 + ')', 'desc': descsum_create('wpkh(' + pub2 + ')'),
'keypool': True, 'keypool': True,
'internal': True, 'internal': True,
"timestamp": "now", "timestamp": "now",
@ -755,7 +767,7 @@ class ImportMultiTest(BitcoinTestFramework):
pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey'] pub2 = self.nodes[0].getaddressinfo(addr2)['pubkey']
result = wrpc.importmulti( result = wrpc.importmulti(
[{ [{
'desc': 'wsh(multi(2,' + pub1 + ',' + pub2 + '))', 'desc': descsum_create('wsh(multi(2,' + pub1 + ',' + pub2 + '))'),
'keypool': True, 'keypool': True,
"timestamp": "now", "timestamp": "now",
}] }]
@ -769,7 +781,7 @@ class ImportMultiTest(BitcoinTestFramework):
assert wrpc.getwalletinfo()['private_keys_enabled'] assert wrpc.getwalletinfo()['private_keys_enabled']
result = wrpc.importmulti( result = wrpc.importmulti(
[{ [{
'desc': 'wpkh(' + pub1 + ')', 'desc': descsum_create('wpkh(' + pub1 + ')'),
'keypool': True, 'keypool': True,
"timestamp": "now", "timestamp": "now",
}] }]
@ -792,7 +804,7 @@ class ImportMultiTest(BitcoinTestFramework):
] ]
result = wrpc.importmulti( result = wrpc.importmulti(
[{ [{
'desc': 'wpkh([80002067/0h/0h]' + xpub + '/*)', 'desc': descsum_create('wpkh([80002067/0h/0h]' + xpub + '/*)'),
'keypool': True, 'keypool': True,
'timestamp': 'now', 'timestamp': 'now',
'range' : {'start': 0, 'end': 4} 'range' : {'start': 0, 'end': 4}

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