Sign the typed data value with types data structure for domain using the TIP-712 specification.
Experimental feature (this method name will change)
This is still an experimental feature. If using it, please specify the exact version of tronweb you are using (e.g. specify "4.3.0", not "^4.3.0") as the method name will be renamed from
_signTypedDatatosignTypedDataonce it has been used in the field a bit.
Usage
tronWeb.trx._signTypedData( domain, types, value, privateKey);
Input Parameters
| Parameter | Description | Data Type |
|---|---|---|
| domain | Domain separator. This field is to prevent collisions with other transactions on the network or messages with the same structure. | JSON |
| types | Type definition of Typed Data | JSON |
| value | The value of Typed Data | JSON |
| privateKey | The private key used for signing. Optional. The default value is the private key passed in when constructing tronweb object. | String |
Return
String - Signature to the typed data
Example
// All properties on a domain are optional
const domain = {
name: 'TRON Mail',
version: '1',
chainId: '0x2b6653dc',
verifyingContract: 'TUe6BwpA7sVTDKaJQoia7FWZpC9sK8WM2t'
};
// The named list of all type definitions
const types = {
Person: [
{ name: 'name', type: 'string' },
{ name: 'wallet', type: 'address' }
],
Mail: [
{ name: 'from', type: 'Person' },
{ name: 'to', type: 'Person' },
{ name: 'contents', type: 'string' }
]
};
// The data to sign
const value = {
from: {
name: 'Cow',
wallet: 'TUg28KYvCXWW81EqMUeZvCZmZw2BChk1HQ'
},
to: {
name: 'Bob',
wallet: 'TT5rFsXYCrnzdE2q1WdR9F2SuVY59A4hoM'
},
contents: 'Hello, Bob!'
};
const signature = await tronWeb.trx._signTypedData(domain, types, value);
// signing result: 0x72cc671f38be492773e2cd44c64535ab8825d8ab7b0e580ee45731d00fc0aa5a385bf816505e6c53864bc8539677f7c6a6ece907c94e02d473d392e364cfd5691c