Solidity側で以下のようにsha3
byte32 solidityMessage = keccak256(abi.encodePacked(address, msg.value, stringKey));
Web3では以下のように作成
const web3Message = Web3.utils.soliditySha3({t: 'address', v: address}, {t: 'uint', v: '123456'}, {t: 'string', v:'secret-key'});
検証
solidityMessage == web3Message
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