ERC-7573 Conditional-upon-Transfer-Decryption for DvP

DraftERCcreated 2023-12-05

A Protocol for Secure Delivery-versus-Payment across two Blockchains

Authors: Christian Fries (@cfries), Peter Kohl-Landgraf (@pekola)

ERC-165 interface ids

Computed here as the XOR of the selectors each interface defines.

ILockingContract	`0x565cc6b5`
IDecryptionContractWithKeyGeneration	`0xeca75ea1`

`0x14cd28f7`	`cancelTransfer(uint256,int256,address,address,bytes,bytes,bytes)`
`0x59caecb5`	`cancelTransfer(uint256)`
`0xdedd6f29`	`completeLock(uint256)`
`0x47f48b5c`	`confirmTransfer(uint256,int256,address,address,bytes,bytes,bytes)`
`0xf1c64baa`	`getInceptionContext(uint256)`	view
`0xa3876e3e`	`getInceptionKeyMaterial(uint256)`	view
`0xbee67b35`	`inceptTransfer(uint256,int256,address,address,bytes,address)`
`0xd391cd4f`	`inceptTransfer(uint256,int256,address,address,bytes,bytes,bytes)`
`0xc0406e5b`	`releaseKey(uint256,bytes)`
`0x7f91094a`	`transferAndDecrypt(uint256)`
`0xd6f4a851`	`transferWithKey(uint256,bytes)`

0xff3572bb onInceptionCompleted(uint256) IDECRYPTIONCONTRACTINCEPTIONCALLBACK

Topic0 is the keccak256 hash of the signature, which is what a log filter matches on.

`0x56e98e2b1e9c0f252e3eab9d288774f4683dfc522194c5acc670c35594afd785`	`TransferIncepted(uint256,int256,address,address,bytes,bytes,bytes)`
`0x17cfce3a2fabd452f2186411d47e179f3451278f038c617e2bbe058df780f8cc`	`TransferConfirmed(uint256,int256,address,address,bytes,bytes,bytes)`
`0x726ca29b824ac540272a3ffa4bb935bc6e3ba655786c518b64f67ea6cadb0b8b`	`TokenClaimed(uint256,bytes)`
`0x51ac4ceb0fd1f5a4c9e14a45a5752b8b50feb2d6df7ee13a0107bb935a321403`	`TokenReclaimed(uint256,bytes)`
`0xc1a52360f3cec4442cfbf1d942bdf7de7c35e8f793a7168d2541ebd5df1d47c3`	`TransferKeyRequested(address,uint256,bytes)`
`0xbbb8eee481e941905aa70814a90c555f03e9ea97f6c391aae6b9b482dd5b53d9`	`TransferKeyReleased(address,uint256,bool,bytes)`