@ckb-ccc/core
Version:
Core of CCC - CKBer's Codebase
88 lines (87 loc) • 3.91 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SignerBtc = void 0;
const index_js_1 = require("../../address/index.js");
const index_js_2 = require("../../bytes/index.js");
const index_js_3 = require("../../ckb/index.js");
const index_js_4 = require("../../client/index.js");
const index_js_5 = require("../../hex/index.js");
const index_js_6 = require("../../num/index.js");
const index_js_7 = require("../signer/index.js");
const verify_js_1 = require("./verify.js");
/**
* An abstract class extending the Signer class for Bitcoin-like signing operations.
* This class provides methods to get Bitcoin account, public key, and internal address,
* as well as signing transactions.
* @public
*/
class SignerBtc extends index_js_7.Signer {
get type() {
return index_js_7.SignerType.BTC;
}
get signType() {
return index_js_7.SignerSignType.BtcEcdsa;
}
/**
* Gets the internal address, which is the Bitcoin account in this case.
*
* @returns A promise that resolves to a string representing the internal address.
*/
async getInternalAddress() {
return this.getBtcAccount();
}
/**
* Gets the identity, which is the Bitcoin public key in this case.
*
* @returns A promise that resolves to a string representing the identity
*/
async getIdentity() {
return (0, index_js_5.hexFrom)(await this.getBtcPublicKey()).slice(2);
}
/**
* Gets an array of Address objects representing the known script addresses for the signer.
*
* @returns A promise that resolves to an array of Address objects.
*/
async getAddressObjs() {
const publicKey = await this.getBtcPublicKey();
const hash = (0, verify_js_1.btcEcdsaPublicKeyHash)(publicKey);
return [
await index_js_1.Address.fromKnownScript(this.client, index_js_4.KnownScript.OmniLock, (0, index_js_5.hexFrom)([0x04, ...hash, 0x00])),
];
}
/**
* prepare a transaction before signing. This method is not implemented and should be overridden by subclasses.
*
* @param txLike - The transaction to prepare, represented as a TransactionLike object.
* @returns A promise that resolves to the prepared Transaction object.
*/
async prepareTransaction(txLike) {
const tx = index_js_3.Transaction.from(txLike);
const { script } = await this.getRecommendedAddressObj();
await tx.addCellDepsOfKnownScripts(this.client, index_js_4.KnownScript.OmniLock);
await tx.prepareSighashAllWitness(script, 85, this.client);
return tx;
}
/**
* Signs a transaction without modifying it.
*
* @param txLike - The transaction to sign, represented as a TransactionLike object.
* @returns A promise that resolves to a signed Transaction object.
*/
async signOnlyTransaction(txLike) {
const tx = index_js_3.Transaction.from(txLike);
const { script } = await this.getRecommendedAddressObj();
const info = await tx.getSignHashInfo(script, this.client);
if (!info) {
return tx;
}
const signature = (0, index_js_2.bytesFrom)(await this.signMessageRaw(`CKB (Bitcoin Layer) transaction: ${info.message}`), "base64");
signature[0] = 31 + ((signature[0] - 27) % 4);
const witness = index_js_3.WitnessArgs.fromBytes(tx.witnesses[info.position]);
witness.lock = (0, index_js_5.hexFrom)((0, index_js_2.bytesConcat)((0, index_js_6.numToBytes)(5 * 4 + signature.length, 4), (0, index_js_6.numToBytes)(4 * 4, 4), (0, index_js_6.numToBytes)(5 * 4 + signature.length, 4), (0, index_js_6.numToBytes)(5 * 4 + signature.length, 4), (0, index_js_6.numToBytes)(signature.length, 4), signature));
tx.setWitnessArgsAt(info.position, witness);
return tx;
}
}
exports.SignerBtc = SignerBtc;