/// <reference types="node" />
import type { KeyObject } from 'crypto';
import type { EncryptDecryptAlgorithmParams } from '../types';
import type { EncryptOptions } from './types';
declare function encrypt(plaintext: string, key: string | KeyObject, algorithm: EncryptDecryptAlgorithmParams, options: EncryptOptions & {
    ciphertextFormat: 'hex';
}): Promise<string>;
declare function encrypt(plaintext: string, key: string | KeyObject, algorithm: EncryptDecryptAlgorithmParams, options: EncryptOptions & {
    ciphertextFormat: 'base64';
}): Promise<string>;
declare function encrypt(plaintext: string, key: string | KeyObject, algorithm: EncryptDecryptAlgorithmParams, options: EncryptOptions & {
    ciphertextFormat: 'buffer';
}): Promise<Buffer>;
declare function encrypt(plaintext: string, key: string | KeyObject, algorithm: EncryptDecryptAlgorithmParams, options: EncryptOptions): Promise<string>;
declare function encrypt(plaintext: string, key: string | KeyObject, algorithm: EncryptDecryptAlgorithmParams): Promise<string>;
export default encrypt;