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1/// <reference types="node" />
2import { rlp } from './externals';
3/**
4 * Creates Keccak hash of a Buffer input
5 * @param a The input data (Buffer)
6 * @param bits (number = 256) The Keccak width
7 */
8export declare const keccak: (a: Buffer, bits?: number) => Buffer;
9/**
10 * Creates Keccak-256 hash of the input, alias for keccak(a, 256).
11 * @param a The input data (Buffer)
12 */
13export declare const keccak256: (a: Buffer) => Buffer;
14/**
15 * Creates Keccak hash of a utf-8 string input
16 * @param a The input data (String)
17 * @param bits (number = 256) The Keccak width
18 */
19export declare const keccakFromString: (a: string, bits?: number) => Buffer;
20/**
21 * Creates Keccak hash of an 0x-prefixed string input
22 * @param a The input data (String)
23 * @param bits (number = 256) The Keccak width
24 */
25export declare const keccakFromHexString: (a: string, bits?: number) => Buffer;
26/**
27 * Creates Keccak hash of a number array input
28 * @param a The input data (number[])
29 * @param bits (number = 256) The Keccak width
30 */
31export declare const keccakFromArray: (a: number[], bits?: number) => Buffer;
32/**
33 * Creates SHA256 hash of a Buffer input.
34 * @param a The input data (Buffer)
35 */
36export declare const sha256: (a: Buffer) => Buffer;
37/**
38 * Creates SHA256 hash of a string input.
39 * @param a The input data (string)
40 */
41export declare const sha256FromString: (a: string) => Buffer;
42/**
43 * Creates SHA256 hash of a number[] input.
44 * @param a The input data (number[])
45 */
46export declare const sha256FromArray: (a: number[]) => Buffer;
47/**
48 * Creates RIPEMD160 hash of a Buffer input.
49 * @param a The input data (Buffer)
50 * @param padded Whether it should be padded to 256 bits or not
51 */
52export declare const ripemd160: (a: Buffer, padded: boolean) => Buffer;
53/**
54 * Creates RIPEMD160 hash of a string input.
55 * @param a The input data (String)
56 * @param padded Whether it should be padded to 256 bits or not
57 */
58export declare const ripemd160FromString: (a: string, padded: boolean) => Buffer;
59/**
60 * Creates RIPEMD160 hash of a number[] input.
61 * @param a The input data (number[])
62 * @param padded Whether it should be padded to 256 bits or not
63 */
64export declare const ripemd160FromArray: (a: number[], padded: boolean) => Buffer;
65/**
66 * Creates SHA-3 hash of the RLP encoded version of the input.
67 * @param a The input data
68 */
69export declare const rlphash: (a: rlp.Input) => Buffer;