import type { InputDataType } from '../types';
import type { RequiredExcludeUndefined } from '../utils/type';
import { Argon2Options } from './argon2';
export interface BaseKeyDerivationOptions {
    algorithm: string;
}
export declare type KeyDerivationOptions = Argon2Options;
export declare type NormalizedKeyDerivationOptions = RequiredExcludeUndefined<KeyDerivationOptions>;
export interface GetKDFResult<T extends NormalizedKeyDerivationOptions> {
    deriveKey: (password: InputDataType, salt: Uint8Array, keyLengthBytes: number) => Promise<Uint8Array>;
    saltLength: number;
    normalizedOptions: T;
}
export declare const getKDF: (options: Readonly<KeyDerivationOptions> | undefined) => GetKDFResult<NormalizedKeyDerivationOptions>;