LooksRare

sellorderDigest() is hash() in: https://github.com/LooksRare/contracts-exchange-v1/blob/master/contracts/libraries/OrderTypes.sol

hash is used to generate the order digest:

bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAIN_SEPARATOR, makerOrder.hash()));

:: invalid S parameter

  • https://ethereum.stackexchange.com/questions/83174/is-it-best-practice-to-check-signature-malleability-in-ecrecover

  • https://crypto.iacr.org/2019/affevents/wac/medias/Heninger-BiasedNonceSense.pdf

  • from(https://github.com/LooksRare/contracts-exchange-v1/blob/master/contracts/libraries/SignatureChecker.sol)

:: buy()

  • checkValiditySignature() --> https://github.com/LooksRare/contracts-exchange-v1/blob/master/contracts/orderValidation/OrderValidatorV1B.sol

  • _validateEOA() --> https://github.com/LooksRare/contracts-exchange-v1/blob/master/contracts/orderValidation/OrderValidatorV1B.sol

::sign msg

  • https://github.com/LooksRare/contracts-exchange-v1/blob/c16227781294f23241f80c4bcc3adf77aaa81157/contracts/orderValidation/OrderValidatorV1B.sol#L438

  • https://medium.com/@angellopozo/ethereum-signing-and-validating-13a2d7cb0ee3

:: order hash

  • https://looksrare.dev/reference/orders-schema

  • https://github.com/LooksRare/contracts-exchange-v1/blob/master/contracts/libraries/OrderTypes.sol

ecrecover

  • https://soliditydeveloper.com/ecrecover

eip721

  • https://medium.com/metamask/eip712-is-coming-what-to-expect-and-how-to-use-it-bb92fd1a7a26

  • https://medium.com/mycrypto/the-magic-of-digital-signatures-on-ethereum-98fe184dc9c7

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