/// <reference types="node" />
/// <reference types="node" />
import BufferAead from '../types/BufferAead';
import crypto from 'crypto';
import DecryptionInput from '../types/DecryptionInput';
import EncryptionInput from '../types/EncryptionInput';
import EncryptionOutput from '../types/EncryptionOutput';
declare abstract class AbstractBufferAead implements BufferAead {
    private readonly keyLength;
    private readonly nonceLength;
    constructor({ keyLength, nonceLength }: {
        keyLength: number;
        nonceLength: number;
    });
    keyGen(): Buffer;
    nonceGen(): Buffer;
    abstract encrypt(input: EncryptionInput): EncryptionOutput;
    abstract decrypt(input: DecryptionInput): Buffer;
    protected static decryptIfAuthentic(decrypter: crypto.DecipherCCM | crypto.DecipherGCM, ciphertext: Buffer): Buffer;
}
export default AbstractBufferAead;