hdPassphrase was hardcoded to empty string in DeriveHDKey, meaning users
who set a BIP39 passphrase during seed creation would derive different
addresses after restoration. This adds proper passphrase storage,
encryption, and decryption alongside the existing mnemonic handling:
- wallet.h: hdPassphrase + vchCryptedHDPassphrase + hdPassphraseIV fields
- wallet.cpp: Lock/Unlock/EncryptWallet/SetHDSeed all handle passphrase
with the same encrypt/decrypt lifecycle as the mnemonic
- DeriveHDKey now passes hdPassphrase to DeriveTriangles (not hardcoded )
- walletdb.h: WriteHDPassphrase/WriteHDCryptedPassphrase/EraseHDPassphrase
- walletdb.cpp: ReadKeyValue handles hdpassphrase/hdcpassphrase records
- rpcwallet.cpp: hdnew/hdshow show passphrase_used + warnings
Also: i2p.cpp hardens I2P private key file permissions to owner-only.
From Claude's uncommitted work on E:\repos\triangles (SAMI-PC). The rest
of Claude's modernization (Boost removal, RPC rewrite, RocksDB default,
SQLite wallet) was already committed to master in bfdb399 and follow-ups.
Krystie
sami7777