I want to verify if message-hash has a particular contract method.
Like below web3 code generates a rawTransaction having,messageHash,v, r, s, rawTransaction
let rawTransaction = {
'from': fromAddress,
'gasLimit': web3js.utils.toHex(310000),
'to': contractAddress,
'gasPrice': web3js.utils.toHex(20 * 1e9),
'value': "0x0",
'data': contract.methods.transfer(toAddress, amount).encodeABI(),
'nonce': web3js.utils.toHex(count),
}
web3js.eth.accounts.signTransaction(rawTransaction, PK);
i.e if message hash from the above signed transaction is 0x9de6f7321d6374c8e26a1cd043daa71719175af97ed0f098260bf117db48dcbf
How can I create same hash in contract by passing above data for verification that given transaction hash is for transfer with all given values?
I have tried keccak256(abi.encodePacked())
using above data but it is generating different hash, may be I am doing something wrong.