@ledgerhq/hw-app-algorand/lib-es/utils.js

Ledger Hardware Wallet Algorand Application API

import nacl from "tweetnacl";
import base32 from "hi-base32";
import sha512 from "js-sha512";
const PUBLIC_KEY_LENGTH = nacl.sign.publicKeyLength;
const ALGORAND_ADDRESS_LENGTH = 58;
const ALGORAND_CHECKSUM_BYTE_LENGTH = 4;
export const encodeAddress = (address) => {
    const checksum = sha512.sha512_256
        .array(address)
        .slice(PUBLIC_KEY_LENGTH - ALGORAND_CHECKSUM_BYTE_LENGTH, PUBLIC_KEY_LENGTH);
    const addr = base32.encode(concatArrays(address, checksum));
    return addr.toString().slice(0, ALGORAND_ADDRESS_LENGTH);
};
function concatArrays(...arrs) {
    const size = arrs.reduce((sum, arr) => sum + arr.length, 0);
    const c = new Uint8Array(size);
    let offset = 0;
    for (let i = 0; i < arrs.length; i++) {
        c.set(arrs[i], offset);
        offset += arrs[i].length;
    }
    return c;
}
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