_signTypedData <src>

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 "6.0.0", not "^6.0.0") as the method name will be renamed from _signTypedData to signTypedData once it has been used in the field a bit.

Usage

tronWeb.trx._signTypedData(domain, types, value, privateKey);

Parameters

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	Optional. The private key used for signing. If omitted, the private key passed in when constructing tronweb object will be used.	String

Return

String - Signature of 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);
0x72cc671f38be492773e2cd44c64535ab8825d8ab7b0e580ee45731d00fc0aa5a385bf816505e6c53864bc8539677f7c6a6ece907c94e02d473d392e364cfd5691c