@ckb-ccc/core
Version:
Core of CCC - CKBer's Codebase
101 lines (100 loc) • 4.2 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.SignerNostr = void 0;
const bech32_1 = require("bech32");
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("../../hasher/index.js");
const index_js_6 = require("../../hex/index.js");
const index_js_7 = require("../signer/index.js");
const verify_js_1 = require("./verify.js");
/**
* @public
*/
class SignerNostr extends index_js_7.Signer {
get type() {
return index_js_7.SignerType.Nostr;
}
get signType() {
return index_js_7.SignerSignType.NostrEvent;
}
/**
* Sign a nostr event.
*
* @returns A promise that resolves to the signed event.
*/
async signNostrEvent(_event) {
throw Error("SignerNostr.signNostrEvent not implemented");
}
/**
* Sign a message.
*
* @returns A promise that resolves to the signature.
*/
async signMessageRaw(message) {
return (0, index_js_6.hexFrom)((await this.signNostrEvent((0, verify_js_1.buildNostrEventFromMessage)(message))).sig);
}
/**
* Gets the internal address, which is the EVM account in this case.
*
* @returns A promise that resolves to a string representing the internal address.
*/
async getInternalAddress() {
return bech32_1.bech32.encode("npub", bech32_1.bech32.toWords((0, index_js_2.bytesFrom)(await this.getNostrPublicKey())));
}
/**
* 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.getNostrPublicKey();
return [
await index_js_1.Address.fromKnownScript(this.client, index_js_4.KnownScript.NostrLock, (0, index_js_6.hexFrom)((0, index_js_2.bytesConcat)([0x00], (0, index_js_5.hashCkb)(publicKey).slice(0, 42)))),
];
}
/**
* prepare a transaction before signing.
*
* @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.NostrLock);
await tx.prepareSighashAllWitness(script, 572, 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 signedEvent = (0, index_js_2.bytesFrom)(JSON.stringify(await this.signNostrEvent({
pubkey: (await this.getNostrPublicKey()).slice(2),
tags: [[SignerNostr.CKB_SIG_HASH_ALL_TAG, info.message.slice(2)]],
created_at: Math.floor(Date.now() / 1000),
kind: SignerNostr.CKB_UNLOCK_EVENT_KIND,
content: SignerNostr.CKB_UNLOCK_EVENT_CONTENT,
})), "utf8");
const witness = index_js_3.WitnessArgs.fromBytes(tx.witnesses[info.position]);
witness.lock = (0, index_js_6.hexFrom)(signedEvent);
tx.setWitnessArgsAt(info.position, witness);
return tx;
}
}
exports.SignerNostr = SignerNostr;
SignerNostr.CKB_SIG_HASH_ALL_TAG = "ckb_sighash_all";
SignerNostr.CKB_UNLOCK_EVENT_KIND = 23334;
SignerNostr.CKB_UNLOCK_EVENT_CONTENT = "Signing a CKB transaction\n\nIMPORTANT: Please verify the integrity and authenticity of connected Nostr client before signing this message\n";