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Fix failing deserialization of wallet with an empty HD chain

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Error occurred when deserializing wallet if either internal or external
zero account key chain of this wallet has no keys issued
This commit is contained in:
troggy 2014-06-11 23:53:45 +04:00 committed by Mike Hearn
parent b5911c1ee4
commit 5840c8a66a
2 changed files with 15 additions and 8 deletions
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22
core/src/main/java/com/google/bitcoin/wallet/KeyChainGroup.java
View File

@ -468,19 +468,25 @@ public class KeyChainGroup {
private static EnumMap<KeyChain.KeyPurpose, DeterministicKey> createCurrentKeysMap(List<DeterministicKeyChain> chains) {
DeterministicKeyChain activeChain = chains.get(chains.size() - 1);
DeterministicKey currentExternalKey = activeChain.getKeyByPath(
ImmutableList.of(ChildNumber.ZERO_HARDENED, ChildNumber.ZERO, new ChildNumber(activeChain.getIssuedExternalKeys() - 1))
);
DeterministicKey currentInternalKey = activeChain.getKeyByPath(
ImmutableList.of(ChildNumber.ZERO_HARDENED, new ChildNumber(1), new ChildNumber(activeChain.getIssuedInternalKeys() - 1))
);
EnumMap<KeyChain.KeyPurpose, DeterministicKey> currentKeys = new EnumMap<KeyChain.KeyPurpose, DeterministicKey>(KeyChain.KeyPurpose.class);
// assuming that only RECEIVE and CHANGE keys are being used at the moment, we will treat latest issued external key
// as current RECEIVE key and latest issued internal key as CHANGE key. This should be changed as soon as other
// kinds of KeyPurpose are introduced.
currentKeys.put(KeyChain.KeyPurpose.RECEIVE_FUNDS, currentExternalKey);
currentKeys.put(KeyChain.KeyPurpose.CHANGE, currentInternalKey);
if (activeChain.getIssuedExternalKeys() > 0) {
DeterministicKey currentExternalKey = activeChain.getKeyByPath(
ImmutableList.of(ChildNumber.ZERO_HARDENED, ChildNumber.ZERO, new ChildNumber(activeChain.getIssuedExternalKeys() - 1))
);
currentKeys.put(KeyChain.KeyPurpose.RECEIVE_FUNDS, currentExternalKey);
}
if (activeChain.getIssuedInternalKeys() > 0) {
DeterministicKey currentInternalKey = activeChain.getKeyByPath(
ImmutableList.of(ChildNumber.ZERO_HARDENED, new ChildNumber(1), new ChildNumber(activeChain.getIssuedInternalKeys() - 1))
);
currentKeys.put(KeyChain.KeyPurpose.CHANGE, currentInternalKey);
}
return currentKeys;
}

1
core/src/test/java/com/google/bitcoin/wallet/KeyChainGroupTest.java
View File

@ -284,6 +284,7 @@ public class KeyChainGroupTest {
@Test
public void serialization() throws Exception {
assertEquals(INITIAL_KEYS + 1 /* for the seed */, group.serializeToProtobuf().size());
group = KeyChainGroup.fromProtobufUnencrypted(group.serializeToProtobuf());
group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
DeterministicKey key1 = group.freshKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
DeterministicKey key2 = group.freshKey(KeyChain.KeyPurpose.CHANGE);