Jaco Greeff
4470dfa7b9
* Auto-conversion * Cleanup type conversion errors * Inching closer, resolution sorted * Additional cleanups * TS, TS everywhere * Minor version for TS release * Last roundups
31 lines
1022 B
TypeScript
31 lines
1022 B
TypeScript
// Copyright 2017-2018 @polkadot/util-keyring authors & contributors
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// This software may be modified and distributed under the terms
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// of the ISC license. See the LICENSE file for details.
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// Original implementation: https://github.com/paritytech/polka-ui/blob/4858c094684769080f5811f32b081dd7780b0880/src/polkadot.js#L34
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import bs58 from 'bs58';
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import assert from '@polkadot/util/assert';
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import u8aConcat from '@polkadot/util/u8a/concat';
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import u8aToBuffer from '@polkadot/util/u8a/toBuffer';
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import u8aToU8a from '@polkadot/util/u8a/toU8a';
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import blake2b from '@polkadot/util-crypto/blake2/asU8a';
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const PREFIX = new Uint8Array([42]);
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export default function encode (_publicKey: Uint8Array | string): string {
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const publicKey = u8aToU8a(_publicKey);
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assert(publicKey.length === 32, `Expected a valid publicKey to convert`);
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const input = u8aConcat(PREFIX, publicKey);
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const hash = blake2b(input, 512);
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return bs58.encode(
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u8aToBuffer(
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u8aConcat(input, hash.subarray(0, 2))
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)
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);
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}
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