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- Wallet class with private key management and address derivation - signMessage following EIP-191 (personal_sign) standard - Address derivation using secp256k1 + keccak256 - publicKey getter, connect(provider) method - signTypedData placeholder (throws Not yet implemented) - Uses existing @noble/secp256k1 and @noble/hashes dependencies - 16 passing tests covering address derivation, signing, recovery, and edge cases
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Adds a Wallet class for private key management and message signing. Supports address derivation, signMessage (EIP-191 personal_sign), and lays groundwork for signTypedData and sendTransaction. Uses @noble/secp256k1 (already a dependency). Part of Phase 1 roadmap (Wallet & Signing - THE Big One).
What is included
Wallet class (
src/classes/Wallet.ts).addressgetter derives checksummed Ethereum address via secp256k1 + keccak256.publicKeygetter returns uncompressed public key (65 bytes, 04 prefix)signMessage(message)follows EIP-191 personal_sign standardsignTypedData()placeholder (throws Not yet implemented).connect(provider)attaches provider for future sendTransaction support16 tests (
src/classes/test/Wallet.test.ts)Dependencies
No new dependencies — uses existing
@noble/secp256k1and@noble/hashes.