@dioxide-js/web3.js/lib/esm/utils/validator.js

dioxide javascript API

import base32Decode from 'base32-decode';
import base32Encode from 'base32-encode';
import crc32c from 'crc-32/crc32c.js';
import { concat } from './buffer.js';
export function isValidAddress(addr) {
    try {
        const [addressStr] = addr.split(':');
        const address = new Uint8Array(base32Decode(addressStr, 'Crockford'));
        const publicKey = address.slice(0, 32);
        let errorCorrectingCode = crc32c.buf(publicKey, 3);
        errorCorrectingCode = (errorCorrectingCode & 0xfffffff0) | 0x3;
        errorCorrectingCode = errorCorrectingCode >>> 0;
        const buffer = new Int32Array([errorCorrectingCode]).buffer;
        const errorCorrectingCodeBuffer = new Uint8Array(buffer);
        const mergedBuffer = concat(publicKey, errorCorrectingCodeBuffer);
        const encodedMergeBuffer = base32Encode(mergedBuffer, 'Crockford');
        return encodedMergeBuffer === addressStr.toUpperCase();
    }
    catch (error) {
        console.error('Exception ' + error);
        return false;
    }
}
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