Sign an EIP712 message
How to ask users to sign an EIP712 structured message.
The object that can ask the user his approval is called a
Signer, once we've created a Signer object we can use the Signer to sign the EIP712 message.//Creating the signer
venlyConnect.createSigner();
//Asking the signer to sign a message.
signer.signEip712({
walletId: '<WALLET_ID>',
secretType: '<BLOCKCHAIN>',
data : <YOUR JSON STRUCTERED EIP712 DATA>
})
const signer = venlyConnect.createSigner();
signer.signEip712({
walletId: 'c8ec9954-fa1a-4682-9cf8-ef5c1015d1d1',
secretType: 'ETHEREUM',
data : {
"types": {
"EIP712Domain": [
{
"name": "name",
"type": "string"
},
{
"name": "version",
"type": "string"
},
{
"name": "verifyingContract",
"type": "address"
},
{
"name": "salt",
"type": "bytes32"
}
],
"MetaTransaction": [
{
"name": "nonce",
"type": "uint256"
},
{
"name": "from",
"type": "address"
},
{
"name": "functionSignature",
"type": "bytes"
}
]
},
"domain": {
"name": "Digimon",
"version": "1",
"verifyingContract": "0x0096100f27d5ed9a3455b54af3934df07b58b506",
"salt": "0x0000000000000000000000000000000000000000000000000000000000013881"
},
"primaryType": "MetaTransaction",
"message": {
"nonce": 0,
"from": "0xeB947ED047020F3C2982d35Ac2a8EbE8A7330282",
"functionSignature": "0xf242432a000000000000000000000000eb947ed047020f3c2982d35ac2a8ebe8a73302820000000000000000000000008fe26c6ff544bee01f41e6f87e6d0ead0ad274050000000000000000000000000000000000000000000000000000000000000065000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000000a00000000000000000000000000000000000000000000000000000000000000000"
}
}
})
{
result: {
r: "0xc5e7a538a353c53e839ed0a2cf7b726806114b637ad1c527046adfc92fecf0d8"
s: "0x551041e78e3b3d4432f653d708965d34aceaf067255d9cc5970283b00d5f95e0"
signature: "0xc5e7a538a353c53e839ed0a2cf7b726806114b637ad1c527046adfc92fecf0d8551041e78e3b3d4432f653d708965d34aceaf067255d9cc5970283b00d5f95e01b"
v: "0x1b"
}
status: "SUCCESS"
}
The function reference describes the different functions that are available in the Widget. For each function you can find the signature, it's parameters, and possible options documented.
Last modified 4mo ago