When you want to move the assets from a two or more stealth address to another stealth address or you want unshield the asset (in other words withdraw from the arcane contract) you’d call the transferFromMultiple function:
/**
* @notice Transfer from multiple stealth addresses
* @dev Allows for a single transaction to transfer tokens from multiple stealth addresses.
*
* In a situation where a user has multiple stealth addresses with some token T and wants to
* transfer a certain amount of T, but one stealth address does not have enough T to transfer,
* the user can use this function to transfer the tokens from multiple stealth addresses.
*
* Emits a {Transfer} event indicating the transfer
*
* @param _token token to transfer
* @param _senders an array of stealth addresses to transfer the token from
* @param _amounts an array of amounts to transfer from each stealth address respectively
* @param _totalAmount the total amount of tokens to transfer
* @param _receiver the stealth address to transfer the token to
* @param _signatures an array of signatures of the senders respectively
* @param _transferData extra parameters for the transfer
* @param _announcementData the transfer announcement data
*/
function transferFromMultiple(
address _token,
address[] calldata _senders,
uint256[] calldata _amounts,
uint256 _totalAmount,
address payable _receiver,
Signature[] calldata _signatures,
TransferData calldata _transferData,
AnnouncementData calldata _announcementData
) external;
You’d notice the _signatures paramater, this is a list of signature generated using the private keys of the _senders respectively.
