Jaco Greeff
e832aebb07
* Add toU8a conversions * Add u8a utilities * @polkadot/rlp with encoding * Decoding test runthrough * Update util locations * Convert util-triehash to use util-rlp * Allow keccak from Uint8Array * Pass Uint8Array to keccak input * Update documentation * Skip some doc generation * Update @polkadot/dev * Update doc typo * Update allocations * Retrieve tests from ethereumjs-testing * Simplify test retrieval * Exclude etereumjs-testing from flow
48 lines
1.2 KiB
Markdown
48 lines
1.2 KiB
Markdown
# Available interfaces
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Utility methods to create [Ethereum Trie hashes](https://github.com/ethereum/wiki/wiki/Patricia-Tree)
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# Available methods
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## trieRoot
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Creates a trie hash from the supplied pairs.
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```js
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trieRoot (pairs: Trie$Pairs): Uint8Array
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```
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From an `Array<{k: Uint8Array, v: Uint8Array}>` input, calculate the triehash and return the result as a `Uint8Array`.
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```js
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import { u8aFromString } from '@polkadot/util';
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import { trieRoot } from '@polkadot/util-triehash';
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trieRoot([{
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k: u8aFromString('A'),
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v: u8aFromString('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa')
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}]) // => 0xd23786fb4a010da3ce639d66d5e904a11dbc02746d1ce25029e53290cabf28ab
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```
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## trieRootOrdered
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Creates a trie hash from the supplied values.
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```js
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trieRootOrdered (values: Array<Uint8Array>): Uint8Array
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```
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From an `Array<Uint8Array>` input, calculate the ordered triehash and return the result as a `Uint8Array`.
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```js
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import { u8aFromString } from '@polkadot/util';
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import { trieRootOrdered } from '@polkadot/util-triehash';
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trieRootOrdered([
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u8aFromString('doe'),
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u8aFromString('reindeer')
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]) // => 0xe766d5d51b89dc39d981b41bda63248d7abce4f0225eefd023792a540bcffee3
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``` |