Fhenix Smart Wallet POC

url: https://smart-wallet-poc-nine.vercel.app/

View your confidential balances using an alchemy LightAccount smart wallet. Built using the new Fhenix Permit V2 system (not provided by fhenix.js) on top of scaffold-eth.

! NOTE: The mock tokens are deployed on Sepolia, and don't use FHE operations for the encrypted data. This will be fixed when the alchemy account-kit contracts have been deployed on Fhenix Nitrogen. See FHERC20.sol for more.

! NOTE: Logging in with an EOA does not work, the existing rainbowkit connection logic has been removed, only smart wallets will work.

Relevant Links:

• https://accountkit.alchemy.com/react/quickstart#existing-project
• https://viem.sh/account-abstraction/accounts/smart/signTypedData
• https://docs.pimlico.io/

Defaults that should be changed:

• Google oauth in Alchemy Account Kit config
• Arch Alchemy Api Key
• Need a WalletConnect api key
• Add deployed site url to alchemy account kit config

Current issues

• Handles only smart accounts, no support for eoa accounts

Task List

• Remove standard wallet connection

• Add Alchemy's account-kit sdk

• Login / logout with account-kit

  • Email
  • Oauth (Google)
  • EOA

• UI for login / logout

• Add PermitV2 class from fhenix.js PermitV2 PR

• Sign PermitV2 with smart wallet

• Deploy Mock FHERC20s with encryption removed on Sepolia

• Fetch smart wallet data from Sepolia

• Pass PermissionV2 from user's permit to fetch mock encrypted balances

  • Current bug: PermissionInvalid_IssuerSignature
  • Bug Fixed: viem's hashTypedData will only return the correct value if chainId is a number.

• Minting FHERC20 balance or encBalance (forces deployment of wallet)

• Indicator in permit modal that it is invalid because not deployed

• PermitV2 Modal for create / import permit

  • Permit explanation and link to docs
  • Create permit option (for me / for sharing)
  • Importing shared permit - sign and populate recipientSignature
  • Selecting permit from list of available permits
  • Checking satisfies project requirements
  • Add status indicator row to modal

• Add status indicator to permit button

• Hook PermitV2 Modal into UnsealableDisplay

• Focused Permit Display

  • Update name
  • Copy permit data
    • Button
    • Copy only relevant data in JSON format
  • See full info of permit

• Import permit blob

  • Validate (check issuer / recipient matches user address)
  • Sign if necessary (recipientSignature)

• Not able to login with oauth - Error: enablePopupOauth must be set in configuration or signer.preparePopupOauth must be called before using popup-based OAuth login

  • FIXED: Missing env var

• - Not able to login with email - 400 Bad Request / https://api.g.alchemy.com/signer/v1/lookup / error: You have not signed the Alchemy Accounts terms of service. Please sign at https://dashboard.alchemy.com/accounts before using this API.

  • FIXED: Missing env var