Does Paymaster have to call addStack() before depositTo()?

Question

Does Paymaster have to call addStack() before depositTo()?

ipromise2324 opened this issue a year ago · comments

[This link]https://github.com/eth-infinitism/account-abstraction/blob/abff2aca61a8f0934e533d0d352978055fddbd96/contracts/core/StakeManager.sol#LL40C9-L40C54

Don't we have to check that whether the PayMaster addStack() or not before PayMaster depositTo()?

Dror Tirosh · Answer 1 · Thu Jun 08 2023 01:43:55 GMT+0800 (China Standard Time)

no need.
the deposit and stake are two separate accounting mechanisms.
deposit is used for gas payment. it can be added by anyone, and withdrawn at any time (by the account/paymaster itself)
the "stake" is used only by paymasters. It is a value locked in the entrypoint and has delayed withdrawn . It comes to prevent Sybil attacks by paymasters.