Command-line wallet for WinterWallet: BIP-39 keypair management, Winternitz signing, and Solana transaction submission.
Off-chain client helpers for the WinterWallet Solana program: instruction builders, PDAs, transaction planning, and wallet state.
Shared constants, discriminators, domain tags, and account layout for the WinterWallet Winternitz signature program.
no_std Winternitz one-time signature primitives with BIP-39-style hierarchical key derivation, designed for efficient Solana on-chain verification.