@hdwallet/core
Version:
A complete Hierarchical Deterministic (HD) Wallet generator for 200+ cryptocurrencies, built with TypeScript.
89 lines • 4.24 kB
JavaScript
;
// SPDX-License-Identifier: MIT
Object.defineProperty(exports, "__esModule", { value: true });
exports.FilecoinAddress = void 0;
const base32_1 = require("../libs/base32");
const eccs_1 = require("../eccs");
const cryptocurrencies_1 = require("../cryptocurrencies");
const crypto_1 = require("../crypto");
const utils_1 = require("../utils");
const address_1 = require("./address");
const exceptions_1 = require("../exceptions");
class FilecoinAddress extends address_1.Address {
static alphabet = cryptocurrencies_1.Filecoin.PARAMS.ALPHABET;
static addressPrefix = cryptocurrencies_1.Filecoin.PARAMS.ADDRESS_PREFIX;
static addressType = cryptocurrencies_1.Filecoin.DEFAULT_ADDRESS_TYPE;
static addressTypes = {
secp256k1: cryptocurrencies_1.Filecoin.PARAMS.ADDRESS_TYPES.SECP256K1,
bls: cryptocurrencies_1.Filecoin.PARAMS.ADDRESS_TYPES.BLS
};
static getName() {
return 'Filecoin';
}
static computeChecksum(pubKeyHash, addressType) {
return (0, crypto_1.blake2b32)((0, utils_1.concatBytes)((0, utils_1.integerToBytes)(addressType), pubKeyHash));
}
static encode(publicKey, options = {
addressPrefix: this.addressPrefix,
addressType: this.addressType
}) {
const pk = (0, eccs_1.validateAndGetPublicKey)(publicKey, eccs_1.SLIP10Secp256k1PublicKey);
const pubKeyHash = (0, crypto_1.blake2b160)(pk.getRawUncompressed());
const typeKey = options.addressType ?? this.addressType;
const addressType = this.addressTypes[typeKey];
if (addressType === undefined) {
throw new exceptions_1.AddressError('Invalid Filecoin address type', {
expected: Object.keys(FilecoinAddress.addressTypes),
got: typeKey
});
}
const checksum = FilecoinAddress.computeChecksum(pubKeyHash, addressType);
const base32Encoded = (0, base32_1.encodeNoPadding)((0, utils_1.bytesToString)((0, utils_1.concatBytes)(pubKeyHash, checksum)), FilecoinAddress.alphabet);
return FilecoinAddress.addressPrefix + String.fromCharCode(addressType + '0'.charCodeAt(0)) + base32Encoded;
}
static decode(address, options = {
addressPrefix: this.addressPrefix,
addressType: this.addressType
}) {
const prefix = FilecoinAddress.addressPrefix;
if (!address.startsWith(prefix)) {
throw new exceptions_1.AddressError('Invalid prefix', {
expected: prefix,
got: address.slice(0, prefix.length)
});
}
const addressBody = address.slice(prefix.length);
const typeKey = options.addressType ?? this.addressType;
const expectedType = FilecoinAddress.addressTypes[typeKey];
if (expectedType === undefined) {
throw new exceptions_1.AddressError('Invalid Filecoin address type', {
expected: Object.keys(FilecoinAddress.addressTypes),
got: typeKey
});
}
const actualType = addressBody.charCodeAt(0) - '0'.charCodeAt(0);
if (expectedType !== actualType) {
throw new exceptions_1.AddressError('Invalid address type', {
expected: expectedType,
got: actualType
});
}
const payloadBytes = (0, utils_1.getBytes)((0, base32_1.decode)(addressBody.slice(1), FilecoinAddress.alphabet));
if (payloadBytes.length !== 24) {
throw new exceptions_1.AddressError('Invalid length', {
expected: 24, got: payloadBytes.length
});
}
const publicKeyHash = payloadBytes.slice(0, 20);
const checksum = payloadBytes.slice(20);
const expectedChecksum = FilecoinAddress.computeChecksum(publicKeyHash, expectedType);
if (!(0, utils_1.equalBytes)(checksum, expectedChecksum)) {
throw new exceptions_1.AddressError('Invalid checksum', {
expected: (0, utils_1.bytesToHex)(expectedChecksum), got: (0, utils_1.bytesToHex)(checksum)
});
}
return (0, utils_1.bytesToString)(publicKeyHash);
}
}
exports.FilecoinAddress = FilecoinAddress;
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