| 1 | import { bnToU8a, stringToU8a, u8aConcat } from '@polkadot/util';
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| 2 | import { blake2AsU8a } from '../blake2/asU8a.js';
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| 3 | import { BN_LE_16_OPTS } from '../bn.js';
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| 4 | import { decodeAddress } from './decode.js';
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| 5 | const PREFIX = stringToU8a('modlpy/utilisuba');
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| 6 | export function createKeyDerived(who, index) {
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| 7 | return blake2AsU8a(u8aConcat(PREFIX, decodeAddress(who), bnToU8a(index, BN_LE_16_OPTS)));
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| 8 | }
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