@fordefi-public/crypto-address-validator-ts
Version:
Crypto address validator for Bitcoin and other Altcoins, forked to be used with typescript
49 lines • 1.55 kB
JavaScript
import { sha256, hexStr2byteArray, byteArray2hexStr } from '../crypto/utils';
const base58 = require('../crypto/externals/base58');
function decodeBase58Address(base58Sting) {
if (typeof (base58Sting) !== 'string') {
return false;
}
if (base58Sting.length <= 4) {
return false;
}
try {
var address = base58.decode(base58Sting);
}
catch (e) {
return false;
}
/*if (base58Sting.length <= 4) {
return false;
}*/
const len = address.length;
const offset = len - 4;
const checkSum = address.slice(offset);
address = address.slice(0, offset);
const hash0 = sha256(byteArray2hexStr(address));
const hash1 = hexStr2byteArray(sha256(hash0));
const checkSum1 = hash1.slice(0, 4);
if (checkSum[0] === checkSum1[0] && checkSum[1] === checkSum1[1] && checkSum[2]
=== checkSum1[2] && checkSum[3] === checkSum1[3]) {
return address;
}
return false;
}
function getEnv(currency, networkType) {
let evn = networkType || 'prod';
if (evn !== 'prod' && evn !== 'testnet')
evn = 'prod';
return currency.addressTypes[evn][0];
}
export function isValidAddress(mainAddress, currency, opts) {
const networkType = opts ? opts.networkType : '';
const address = decodeBase58Address(mainAddress);
if (!address) {
return false;
}
if (address.length !== 21) {
return false;
}
return getEnv(currency, networkType) === address[0].toString();
}
//# sourceMappingURL=tron_validator.js.map