Jaco
b16396b9b3
* Rename internal keypair locations * save all :) * Incdicate testing * add dummy test
20 lines
711 B
TypeScript
20 lines
711 B
TypeScript
// Copyright 2017-2021 @polkadot/util-crypto authors & contributors
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// SPDX-License-Identifier: Apache-2.0
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import type { Keypair } from '../types';
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import { assert, isU8a } from '@polkadot/util';
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import { sr25519PairFromU8a } from './pair/fromU8a';
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import { sr25519KeypairToU8a } from './pair/toU8a';
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export function createDeriveFn (derive: (pair: Uint8Array, cc: Uint8Array) => Uint8Array): (keypair: Keypair, chainCode: Uint8Array) => Keypair {
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return (keypair: Keypair, chainCode: Uint8Array): Keypair => {
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assert(isU8a(chainCode) && chainCode.length === 32, 'Invalid chainCode passed to derive');
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return sr25519PairFromU8a(
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derive(sr25519KeypairToU8a(keypair), chainCode)
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);
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};
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}
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