| 1 | // Copyright 2017-2023 @polkadot/util-crypto authors & contributors
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| 2 | // SPDX-License-Identifier: Apache-2.0
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| 3 |
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| 4 | import { isU8a } from '@polkadot/util';
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| 5 | import { sr25519PairFromU8a } from "./pair/fromU8a.js";
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| 6 | import { sr25519KeypairToU8a } from "./pair/toU8a.js";
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| 7 | export function createDeriveFn(derive) {
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| 8 | return (keypair, chainCode) => {
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| 9 | if (!isU8a(chainCode) || chainCode.length !== 32) {
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| 10 | throw new Error('Invalid chainCode passed to derive');
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| 11 | }
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| 12 | return sr25519PairFromU8a(derive(sr25519KeypairToU8a(keypair), chainCode));
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| 13 | };
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| 14 | } |
| \ | No newline at end of file |