eip-712/lib/cjs/utils/buffer.js

Tiny library with utility functions that can help with signing and verifying EIP-712 based messages

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.toBuffer = exports.keccak256 = void 0;

var _sha = require("@noble/hashes/sha3");

var _utils = require("@noble/hashes/utils");

const keccak256 = (data, encoding) => {
  if (typeof data === 'string' && encoding === 'utf8') {
    return (0, _sha.keccak_256)(toBuffer(data, encoding));
  }

  return (0, _sha.keccak_256)(data);
};

exports.keccak256 = keccak256;

const toBuffer = (data, encoding = 'hex') => {
  if (encoding === 'hex') {
    if (data.startsWith('0x')) {
      return (0, _utils.hexToBytes)(data.substring(2));
    }

    return (0, _utils.hexToBytes)(data);
  }

  return (0, _utils.utf8ToBytes)(data);
};

exports.toBuffer = toBuffer;
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