diff options
Diffstat (limited to 'src/wallet/wallet.h')
| -rw-r--r-- | src/wallet/wallet.h | 95 |
1 files changed, 0 insertions, 95 deletions
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index 9ab9e283fa..7a0cdec5ef 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -57,8 +57,6 @@ enum class WalletCreationStatus { WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, std::shared_ptr<CWallet>& result); -//! Default for -keypool -static const unsigned int DEFAULT_KEYPOOL_SIZE = 1000; //! -paytxfee default constexpr CAmount DEFAULT_PAY_TX_FEE = 0; //! -fallbackfee default @@ -123,99 +121,6 @@ static const std::map<std::string,WalletFlags> WALLET_FLAG_MAP{ extern const std::map<uint64_t,std::string> WALLET_FLAG_CAVEATS; -/** A key from a CWallet's keypool - * - * The wallet holds one (for pre HD-split wallets) or several keypools. These - * are sets of keys that have not yet been used to provide addresses or receive - * change. - * - * The Bitcoin Core wallet was originally a collection of unrelated private - * keys with their associated addresses. If a non-HD wallet generated a - * key/address, gave that address out and then restored a backup from before - * that key's generation, then any funds sent to that address would be - * lost definitively. - * - * The keypool was implemented to avoid this scenario (commit: 10384941). The - * wallet would generate a set of keys (100 by default). When a new public key - * was required, either to give out as an address or to use in a change output, - * it would be drawn from the keypool. The keypool would then be topped up to - * maintain 100 keys. This ensured that as long as the wallet hadn't used more - * than 100 keys since the previous backup, all funds would be safe, since a - * restored wallet would be able to scan for all owned addresses. - * - * A keypool also allowed encrypted wallets to give out addresses without - * having to be decrypted to generate a new private key. - * - * With the introduction of HD wallets (commit: f1902510), the keypool - * essentially became an address look-ahead pool. Restoring old backups can no - * longer definitively lose funds as long as the addresses used were from the - * wallet's HD seed (since all private keys can be rederived from the seed). - * However, if many addresses were used since the backup, then the wallet may - * not know how far ahead in the HD chain to look for its addresses. The - * keypool is used to implement a 'gap limit'. The keypool maintains a set of - * keys (by default 1000) ahead of the last used key and scans for the - * addresses of those keys. This avoids the risk of not seeing transactions - * involving the wallet's addresses, or of re-using the same address. - * - * The HD-split wallet feature added a second keypool (commit: 02592f4c). There - * is an external keypool (for addresses to hand out) and an internal keypool - * (for change addresses). - * - * Keypool keys are stored in the wallet/keystore's keymap. The keypool data is - * stored as sets of indexes in the wallet (setInternalKeyPool, - * setExternalKeyPool and set_pre_split_keypool), and a map from the key to the - * index (m_pool_key_to_index). The CKeyPool object is used to - * serialize/deserialize the pool data to/from the database. - */ -class CKeyPool -{ -public: - //! The time at which the key was generated. Set in AddKeypoolPubKeyWithDB - int64_t nTime; - //! The public key - CPubKey vchPubKey; - //! Whether this keypool entry is in the internal keypool (for change outputs) - bool fInternal; - //! Whether this key was generated for a keypool before the wallet was upgraded to HD-split - bool m_pre_split; - - CKeyPool(); - CKeyPool(const CPubKey& vchPubKeyIn, bool internalIn); - - ADD_SERIALIZE_METHODS; - - template <typename Stream, typename Operation> - inline void SerializationOp(Stream& s, Operation ser_action) { - int nVersion = s.GetVersion(); - if (!(s.GetType() & SER_GETHASH)) - READWRITE(nVersion); - READWRITE(nTime); - READWRITE(vchPubKey); - if (ser_action.ForRead()) { - try { - READWRITE(fInternal); - } - catch (std::ios_base::failure&) { - /* flag as external address if we can't read the internal boolean - (this will be the case for any wallet before the HD chain split version) */ - fInternal = false; - } - try { - READWRITE(m_pre_split); - } - catch (std::ios_base::failure&) { - /* flag as postsplit address if we can't read the m_pre_split boolean - (this will be the case for any wallet that upgrades to HD chain split)*/ - m_pre_split = false; - } - } - else { - READWRITE(fInternal); - READWRITE(m_pre_split); - } - } -}; - /** A wrapper to reserve an address from a wallet * * ReserveDestination is used to reserve an address. |