/**
 * 加密方法
 *
 * @param plaintext
 * @param key 256位密钥 (32个字符)
 * @param iv 128位初始向量 (16个字符)
 */
export declare const encryptPass: (plaintext: string, key: string, iv: string) => string;
/**
 * 解密方法
 *
 * @param encryptedText
 * @param key 256位密钥 (32个字符)
 * @param iv 128位初始向量 (16个字符)
 */
export declare const decryptPass: (encryptedText: string, key: string, iv: string) => string;
/**
 * md5 加密
 *
 * @param str
 */
export declare const md5: (str: string) => string;
/**
 * 将字符串转换为Uint8Array（UTF-8编码）
 * @param str 输入字符串
 * @returns Uint8Array
 */
export declare const stringToUint8Array: (str: string) => Uint8Array<ArrayBuffer>;
/**
 * 将Uint8Array转换为字符串（UTF-8解码）
 * @param array Uint8Array
 * @returns 字符串
 */
export declare const uint8ArrayToString: (array: Uint8Array<ArrayBuffer>) => string;
/**
 * 将Uint8Array转换为Base64字符串
 * @param array Uint8Array
 * @returns Base64字符串
 */
export declare const uint8ArrayToBase64: (array: Uint8Array<ArrayBuffer>) => string;
/**
 * 将Base64字符串转换为Uint8Array
 * @param base64 Base64字符串
 * @returns Uint8Array
 */
export declare const base64ToUint8Array: (base64: string) => Uint8Array<ArrayBuffer>;
/**
 * 生成随机密钥（32字节）
 */
export declare const generateRandomKey: () => Uint8Array<ArrayBuffer>;
/**
 * 生成随机初始向量（16字节）
 */
export declare const generateRandomIV: () => Uint8Array<ArrayBuffer>;
/**
 * AES-256-CBC加密
 *
 * @param plaintext
 * @param key 256位密钥 (32个字符)
 * @param iv 128位初始向量 (16个字符)
 */
export declare const encryptPassNoNode: (plaintext: string, key: string, iv: string) => Promise<string>;
/**
 * AES-256-CBC解密
 *
 * @param encryptedText
 * @param key 256位密钥 (32个字符)
 * @param iv 128位初始向量 (16个字符)
 */
export declare const decryptPassNoNode: (encryptedText: string, key: string, iv: string) => Promise<string>;