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1/**
2 * @name keccakAsU8a
3 * @summary Creates a keccak Uint8Array from the input.
4 * @description
5 * From either a `string` or a `Buffer` input, create the keccak and return the result as a `Uint8Array`.
6 * @example
7 * <BR>
8 *
9 * ```javascript
10 * import { keccakAsU8a } from '@polkadot/util-crypto';
11 *
12 * keccakAsU8a('123'); // => Uint8Array
13 * ```
14 */
15export declare const keccakAsU8a: (value: string | Uint8Array, bitLength?: 256 | 512, onlyJs?: boolean) => Uint8Array;
16/**
17 * @name keccak256AsU8a
18 * @description Creates a keccak256 Uint8Array from the input.
19 */
20export declare const keccak256AsU8a: (data: string | Uint8Array, onlyJs?: boolean) => Uint8Array;
21/**
22 * @name keccak512AsU8a
23 * @description Creates a keccak512 Uint8Array from the input.
24 */
25export declare const keccak512AsU8a: (data: string | Uint8Array, onlyJs?: boolean) => Uint8Array;
26/**
27 * @name keccakAsHex
28 * @description Creates a keccak hex string from the input.
29 */
30export declare const keccakAsHex: (value: string | Uint8Array, bitLength?: 256 | 512 | undefined, onlyJs?: boolean | undefined) => import("@polkadot/util/types").HexString;