bitcoinjs-lib/src/payments/p2pk.js

Client-side Bitcoin JavaScript library

'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
exports.p2pk = void 0;
const networks_1 = require('../networks');
const bscript = require('../script');
const types_1 = require('../types');
const lazy = require('./lazy');
const OPS = bscript.OPS;
// input: {signature}
// output: {pubKey} OP_CHECKSIG
function p2pk(a, opts) {
  if (!a.input && !a.output && !a.pubkey && !a.input && !a.signature)
    throw new TypeError('Not enough data');
  opts = Object.assign({ validate: true }, opts || {});
  (0, types_1.typeforce)(
    {
      network: types_1.typeforce.maybe(types_1.typeforce.Object),
      output: types_1.typeforce.maybe(types_1.typeforce.Buffer),
      pubkey: types_1.typeforce.maybe(types_1.isPoint),
      signature: types_1.typeforce.maybe(bscript.isCanonicalScriptSignature),
      input: types_1.typeforce.maybe(types_1.typeforce.Buffer),
    },
    a,
  );
  const _chunks = lazy.value(() => {
    return bscript.decompile(a.input);
  });
  const network = a.network || networks_1.bitcoin;
  const o = { name: 'p2pk', network };
  lazy.prop(o, 'output', () => {
    if (!a.pubkey) return;
    return bscript.compile([a.pubkey, OPS.OP_CHECKSIG]);
  });
  lazy.prop(o, 'pubkey', () => {
    if (!a.output) return;
    return a.output.slice(1, -1);
  });
  lazy.prop(o, 'signature', () => {
    if (!a.input) return;
    return _chunks()[0];
  });
  lazy.prop(o, 'input', () => {
    if (!a.signature) return;
    return bscript.compile([a.signature]);
  });
  lazy.prop(o, 'witness', () => {
    if (!o.input) return;
    return [];
  });
  // extended validation
  if (opts.validate) {
    if (a.output) {
      if (a.output[a.output.length - 1] !== OPS.OP_CHECKSIG)
        throw new TypeError('Output is invalid');
      if (!(0, types_1.isPoint)(o.pubkey))
        throw new TypeError('Output pubkey is invalid');
      if (a.pubkey && !a.pubkey.equals(o.pubkey))
        throw new TypeError('Pubkey mismatch');
    }
    if (a.signature) {
      if (a.input && !a.input.equals(o.input))
        throw new TypeError('Signature mismatch');
    }
    if (a.input) {
      if (_chunks().length !== 1) throw new TypeError('Input is invalid');
      if (!bscript.isCanonicalScriptSignature(o.signature))
        throw new TypeError('Input has invalid signature');
    }
  }
  return Object.assign(o, a);
}
exports.p2pk = p2pk;