removeVault() overwrote vault.dat with zeros then unlinked it, but never flushed
to stable storage, so the zeros could stay in the OS cache and never reach disk.
flush + fsync before unlink on POSIX (still best-effort on CoW/SSD, but now does
what it claims).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Write vault.dat atomically and 0600 (it holds the PIN-encrypted passphrase, so
a world-readable copy enables an offline brute-force of the short PIN), and
chmod the tx-history SQLite + its WAL/SHM sidecars to 0600 on open.
- The tx-history snapshot and key-salt rows are keyed on a hash of the full
address set, which changes whenever a new address is generated — orphaning the
prior hash's full-history blob and salt forever. pruneOtherWallets() now drops
rows for every non-live wallet hash on each save, bounding the database.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Full-node GUI wallet for DragonX cryptocurrency.
Built with Dear ImGui, SDL3, and OpenGL3/DX11.
Features:
- Send/receive shielded and transparent transactions
- Autoshield with merged transaction display
- Built-in CPU mining (xmrig)
- Peer management and network monitoring
- Wallet encryption with PIN lock
- QR code generation for receive addresses
- Transaction history with pagination
- Console for direct RPC commands
- Cross-platform (Linux, Windows)
