verifyTypedData

Verify the signature of the typed data value with types data structure for domain using the TIP-712 specification.

Usage

tronWeb.trx.verifyTypedData(domain, types, value, signature, address);

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	The private key used for signing. Optional. The default value is the private key passed in when constructing tronweb object.	String

Return

bool - true if verify successfully, else return error Signature does not match.

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!'
};

let signature = await tronWeb.trx._signTypedData(domain, types, value);

const tail = signature.substring(128, 130);
if (tail == '01') {
  signature = signature.substring(0,128)+'1c';
} else if(tail == '00') {
  signature = signature.substring(0,128)+'1b';
}

const result = await tronWeb.trx.verifyTypedData(domain, types, value, signature);
// verification result: true