export declare const encodeDataGcm: (content: string, ivStr?: string) => Promise<string[]>;
export declare const decodeDataGcm: (content: string, ivStr: string) => Promise<string>;
export declare const encodeDataCbc: (content: string, ivStr?: string) => string[];
export declare const decodeDataCbc: (content: string, ivStr: string) => string;
export declare const testEncode: () => Promise<void>;