UNPKG

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1'use strict';
2Object.defineProperty(exports, '__esModule', { value: true });
3exports.p2pk = void 0;
4const networks_1 = require('../networks');
5const bscript = require('../script');
6const types_1 = require('../types');
7const lazy = require('./lazy');
8const OPS = bscript.OPS;
9// input: {signature}
10// output: {pubKey} OP_CHECKSIG
11function p2pk(a, opts) {
12 if (!a.input && !a.output && !a.pubkey && !a.input && !a.signature)
13 throw new TypeError('Not enough data');
14 opts = Object.assign({ validate: true }, opts || {});
15 (0, types_1.typeforce)(
16 {
17 network: types_1.typeforce.maybe(types_1.typeforce.Object),
18 output: types_1.typeforce.maybe(types_1.typeforce.Buffer),
19 pubkey: types_1.typeforce.maybe(types_1.isPoint),
20 signature: types_1.typeforce.maybe(bscript.isCanonicalScriptSignature),
21 input: types_1.typeforce.maybe(types_1.typeforce.Buffer),
22 },
23 a,
24 );
25 const _chunks = lazy.value(() => {
26 return bscript.decompile(a.input);
27 });
28 const network = a.network || networks_1.bitcoin;
29 const o = { name: 'p2pk', network };
30 lazy.prop(o, 'output', () => {
31 if (!a.pubkey) return;
32 return bscript.compile([a.pubkey, OPS.OP_CHECKSIG]);
33 });
34 lazy.prop(o, 'pubkey', () => {
35 if (!a.output) return;
36 return a.output.slice(1, -1);
37 });
38 lazy.prop(o, 'signature', () => {
39 if (!a.input) return;
40 return _chunks()[0];
41 });
42 lazy.prop(o, 'input', () => {
43 if (!a.signature) return;
44 return bscript.compile([a.signature]);
45 });
46 lazy.prop(o, 'witness', () => {
47 if (!o.input) return;
48 return [];
49 });
50 // extended validation
51 if (opts.validate) {
52 if (a.output) {
53 if (a.output[a.output.length - 1] !== OPS.OP_CHECKSIG)
54 throw new TypeError('Output is invalid');
55 if (!(0, types_1.isPoint)(o.pubkey))
56 throw new TypeError('Output pubkey is invalid');
57 if (a.pubkey && !a.pubkey.equals(o.pubkey))
58 throw new TypeError('Pubkey mismatch');
59 }
60 if (a.signature) {
61 if (a.input && !a.input.equals(o.input))
62 throw new TypeError('Signature mismatch');
63 }
64 if (a.input) {
65 if (_chunks().length !== 1) throw new TypeError('Input is invalid');
66 if (!bscript.isCanonicalScriptSignature(o.signature))
67 throw new TypeError('Input has invalid signature');
68 }
69 }
70 return Object.assign(o, a);
71}
72exports.p2pk = p2pk;