@polkadot/util-crypto/address/keyDerived.js

A collection of useful crypto utilities for @polkadot

import { bnToU8a, stringToU8a, u8aConcat } from '@polkadot/util';
import { blake2AsU8a } from '../blake2/asU8a.js';
import { BN_LE_16_OPTS } from '../bn.js';
import { decodeAddress } from './decode.js';
const PREFIX = stringToU8a('modlpy/utilisuba');
export function createKeyDerived(who, index) {
    return blake2AsU8a(u8aConcat(PREFIX, decodeAddress(who), bnToU8a(index, BN_LE_16_OPTS)));
}