export interface HashFunction {
    blocksize: number;
    (buf: Buffer): Buffer;
}

export namespace Hash {
    export const sha1: HashFunction;
    export const sha256: HashFunction;
    export const sha256sha256: HashFunction;
    export const x11: HashFunction;
    export const ripemd160: HashFunction;
    export const sha256ripemd160: HashFunction;
    export const sha512: HashFunction;
    export function hmac(hashf: HashFunction, data: Buffer, key: Buffer): Buffer;
    export function sha256hmac(data: Buffer, key: Buffer): Buffer;
    export function sha512hmac(data: Buffer, key: Buffer): Buffer;
}