Sign an EIP712 message
How to ask users to sign an EIP712 structured message.
Intro
Signing an EIP712 structured message is similar to signing a message.
The object that can ask the user for his approval is called a Signer
, once we've created a Signer
object we can use the Signer
to sign the EIP712 message.
Function:
//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>
})
Example:
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"
}
}
})
Returns:
{
result: {
r: "0xc5e7a538a353c53e839ed0a2cf7b726806114b637ad1c527046adfc92fecf0d8"
s: "0x551041e78e3b3d4432f653d708965d34aceaf067255d9cc5970283b00d5f95e0"
signature: "0xc5e7a538a353c53e839ed0a2cf7b726806114b637ad1c527046adfc92fecf0d8551041e78e3b3d4432f653d708965d34aceaf067255d9cc5970283b00d5f95e01b"
v: "0x1b"
}
status: "SUCCESS"
}
Function Reference
The function reference describes the different functions that are available in the Widget. For each function you can find the signature, its parameters, and possible options documented.
Updated about 1 month ago