import { BigInteger } from 'big-integer';
import { RNG, CipherText } from './interface';
import { TimelockProof, Timelock } from './timelock-util';
export declare class ChestKey extends TimelockProof {
}
export declare function encrypt(key: Uint8Array, text: Uint8Array, rng?: RNG): CipherText;
export declare function decrypt(key: Uint8Array, c: CipherText): Uint8Array | null;
export declare class Chest {
    lockedValue: BigInteger;
    cipherText: CipherText;
    constructor({ lockedValue, cipherText }: {
        lockedValue: BigInteger;
        cipherText: CipherText;
    });
    static newChestAndKey(payload: Uint8Array, time: number, mod?: BigInteger, rng?: RNG): {
        chest: Chest;
        key: ChestKey;
    };
    static fromTimelock(payload: Uint8Array, time: number, timelock: Timelock, rng?: RNG): {
        chest: Chest;
        key: ChestKey;
    };
    newKey(time: number, mod?: BigInteger): ChestKey;
    open(key: ChestKey, time: number): Uint8Array | null;
    encode(): Uint8Array;
    static fromArray(buf: Uint8Array): [Chest, number];
}