import pwdModule from '@sl-nx/couch-pwd';
import { Config } from './types/config';
import { HashResult, LocalHashObj } from './types/typings';
export declare class Hashing {
    hashers: Record<string, pwdModule[]>;
    times: Record<string, number[]>;
    defaultDigest: 'sha1' | 'sha256';
    dummyHashObject: LocalHashObj;
    constructor(config: Partial<Config>);
    private getHasherForTimestamp;
    hashUserPassword(pw: string): Promise<HashResult>;
    verifyUserPassword(hashObj: HashResult, pw: string): Promise<boolean>;
    getDigest(pbkdf2_prf: string): 'sha1' | 'sha256';
}