Upcoming implementation: compatibility adaptation for the v field in the signature returned after Ledger signing

For Ledger signing (including all transaction signatures, message signatures, and EIP-712 signatures), a new technical measure will be rolled out in the coming months. The trailing 01 in the signature field will be replaced with 1c, and 00 will be replaced with 1b.

This change ensures that the last two bytes of Ledger account signatures are consistent with those of regular account signatures.

Transaction Signing

The following is a successfully signed Ledger transaction body:

{
    "txID": "......",
    .....other property,
    "signature": [
        "......01"
    ]
}

It will become:

{
    "txID": "......",
    .....other property,
    "signature": [
        "......1c"
    ]
}

When broadcasting, the DApp will use the modified transaction body.

Message Signing

The DApp sends a message signing request:

tron.tronWeb.trx.sign('.....unsign_string');

or

tron.tronWeb.trx.signMessageV2('.....unsign_string');

Actual signature hash returned by Ledger:

......50f400

Modified hash:

......50f41b

EIP-712 Signing

The DApp sends an EIP-712 signing request:

const types = {
  Person: [
    {
      name: 'name',
      type: 'string',
    },
    {
      name: 'wallet',
      type: 'address',
    },
  ],
  Mail: [
    {
      name: 'from',
      type: 'Person',
    },
    {
      name: 'to',
      type: 'Person',
    },
    {
      name: 'contents',
      type: 'string',
    },
  ],
};

const primaryType = 'Mail';

const domain = {
  name: 'Ether Mail',
  version: '1',
  chainId: '0x2b6653dc',
  verifyingContract: '0xCcCCccccCCCCcCCCCCCcCcCccCcCCCcCcccccccC',
};

const message = {
  from: {
    name: 'Cow',
    wallet: '0xCD2a3d9F938E13CD947Ec05AbC7FE734Df8DD826',
  },
  to: {
    name: 'Bob',
    wallet: '0xbBbBBBBbbBBBbbbBbbBbbbbBBbBbbbbBbBbbBBbB',
  },
  contents: 'Hello, Bob!',
};

await tron.tronWeb.trx._signTypedData(domain, types, message);

Actual signature hash returned by Ledger:

.....7ee700

Modified hash:

......7ee71b