@hdwallet/core
Version:
A complete Hierarchical Deterministic (HD) Wallet generator for 200+ cryptocurrencies, built with TypeScript.
60 lines • 2.49 kB
JavaScript
;
// SPDX-License-Identifier: MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.EthereumAddress = void 0;
const eccs_1 = require("../eccs");
const cryptocurrencies_1 = require("../cryptocurrencies");
const crypto_1 = require("../crypto");
const utils_1 = require("../utils");
const exceptions_1 = require("../exceptions");
const address_1 = require("./address");
class EthereumAddress extends address_1.Address {
static addressPrefix = cryptocurrencies_1.Ethereum.PARAMS.ADDRESS_PREFIX;
static getName() {
return 'Ethereum';
}
static checksumEncode(address) {
let output = '';
const addressHash = (0, utils_1.bytesToString)((0, crypto_1.keccak256)(new TextEncoder().encode(address.toLowerCase())));
for (let i = 0; i < address.length; i++) {
output += parseInt(addressHash[i], 16) >= 8
? address[i].toUpperCase()
: address[i];
}
return output;
}
static encode(publicKey, options = {
skipChecksumEncode: false
}) {
const pk = (0, eccs_1.validateAndGetPublicKey)(publicKey, eccs_1.SLIP10Secp256k1PublicKey);
const pubKeyHash = (0, utils_1.bytesToString)((0, crypto_1.keccak256)(pk.getRawUncompressed().slice(1))).slice(-40);
return this.addressPrefix + (options.skipChecksumEncode ? pubKeyHash : this.checksumEncode(pubKeyHash));
}
static decode(address, options = {
skipChecksumEncode: false
}) {
const prefix = address.slice(0, this.addressPrefix.length);
if (prefix !== this.addressPrefix) {
throw new exceptions_1.AddressError('Invalid address prefix', {
expected: this.addressPrefix,
got: prefix
});
}
const addressPart = address.slice(this.addressPrefix.length);
if (addressPart.length !== 40) {
throw new exceptions_1.AddressError('Invalid length', {
expected: 40,
got: addressPart.length
});
}
if (!options.skipChecksumEncode && addressPart !== this.checksumEncode(addressPart)) {
throw new exceptions_1.AddressError('Invalid checksum encode', {
expected: this.checksumEncode(addressPart),
got: addressPart
});
}
return addressPart.toLowerCase();
}
}
exports.EthereumAddress = EthereumAddress;
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