IERC20PermitAllowed

Interface used by DAI/CHAI for permit

Functions

permit

  function permit(
    address holder,
    address spender,
    uint256 nonce,
    uint256 expiry,
    bool allowed,
    uint8 v,
    bytes32 r,
    bytes32 s
  ) external

Approve the spender to spend some tokens via the holder signature This is the permit interface used by DAI and CHAI

Parameters:

Name	Type	Description
`holder`	address	The address of the token holder, the token owner
`spender`	address	The address of the token spender
`nonce`	uint256	The holder’s nonce, increases at each call to permit
`expiry`	uint256	The timestamp at which the permit is no longer valid
`allowed`	bool	Boolean that sets approval amount, true for type(uint256).max and false for 0
`v`	uint8	Must produce valid secp256k1 signature from the holder along with `r` and `s`
`r`	bytes32	Must produce valid secp256k1 signature from the holder along with `v` and `s`
`s`	bytes32	Must produce valid secp256k1 signature from the holder along with `r` and `v`

Overview

Guides

Reference

Functions

permit

Parameters:

​Functions

​permit

​Parameters:

Functions

permit

Parameters: