import { mode, pad, lib } from 'crypto-js';
export interface EncryptionParams {
    key: string;
    iv: string;
}
export interface CustomCipherParams {
    mode?: typeof mode.ECB;
    padding?: typeof pad.Pkcs7;
    iv?: lib.WordArray;
}
export declare class AesEncryption {
    private key;
    private iv;
    constructor(opt?: Partial<EncryptionParams>);
    get getOptions(): CustomCipherParams;
    encryptByAES(cipherText: string): string;
    decryptByAES(cipherText: string): string;
}
export declare function encryptByBase64(cipherText: string): string;
export declare function decodeByBase64(cipherText: string): string;
export declare function encryptByMd5(password: string): string;