import * as Cryptojs from 'crypto-js';
export interface EncryptionParams {
    key: string;
    iv: string;
}
interface Padding {
    pad(data: Cryptojs.lib.WordArray, blockSize: number): void;
    unpad(data: Cryptojs.lib.WordArray): void;
}
export declare class AesEncryption {
    private key;
    private iv;
    constructor(opt?: Partial<EncryptionParams>);
    get getOptions(): {
        mode: any;
        padding: Padding;
        iv: Cryptojs.lib.WordArray | undefined;
    };
    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;
export {};