# Functions ## keccakAsHex ▸ **keccakAsHex**(value: *`Buffer` \| `Uint8Array` \| `string`*): `string` *Defined in [keccak/asHex.ts:23](https://github.com/polkadot-js/common/blob/38e1c5e/packages/util-crypto/src/keccak/asHex.ts#L23)* *__name__*: keccakAsHex *__summary__*: Creates a keccak hex string from the input. *__description__*: From either a `string` or a `Buffer` input, create the keccak and return the result as a `0x` prefixed hex string. *__example__*: ```javascript import { keccakAsHex } from '@polkadot/util-crypto'; keccakAsHex('123'); // => 0x... ``` **Parameters:** | Name | Type | | ------ | ------ | | value | `Buffer` \| `Uint8Array` \| `string` | **Returns:** `string` ___