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comment explaining new wallet format for key/wkey entries

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phantomcircuit 2013-10-12 23:44:28 -07:00
parent a42eef6f10
commit bc68788317
1 changed files with 6 additions and 0 deletions
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6
src/walletdb.cpp
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@ -317,6 +317,12 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
ssValue >> wkey; ssValue >> wkey;
pkey = wkey.vchPrivKey; pkey = wkey.vchPrivKey;
} }
// Old wallets store keys as "key" [pubkey] => [privkey]
// ... which was slow for wallets with lots of keys, because the public key is re-derived from the private key
// using EC operations as a checksum.
// Newer wallets store keys as "key"[pubkey] => [privkey][hash(pubkey,privkey)], which is much faster while
// remaining backwards-compatible.
try try
{ {
ssValue >> hash; ssValue >> hash;