import { PrivateKey } from './key_private';
import { PublicKey } from './key_public';
export declare class Aes {
    static uniqueNonce(): string;
    static encrypt(private_key: PrivateKey, public_key: PublicKey, message: Buffer | string, nonce?: string): {
        nonce: string;
        message: string;
        checksum: number;
    };
    static decrypt(private_key: PrivateKey, public_key: PublicKey, nonce: string, message: string, checksum: number): Buffer;
    static fromSeed(seed: string): Buffer;
    static fromBuffer(buffer: Buffer): Buffer;
    static fromString(string: string): Buffer;
    static toBuffer(aes: Buffer): Buffer;
    static toString(aes: Buffer): string;
}