import { type TArg, type TRet } from "@li0ard/gost3413";
/**
 * Encrypts data using Cipher Block Chaining (CBC) mode with the Kuznyechik cipher.
 *
 * @param key Encryption key
 * @param data Data to be encrypted
 * @param iv Initialization vector
 */
export declare const encryptCBC: (key: TArg<Uint8Array>, data: TArg<Uint8Array>, iv: TArg<Uint8Array>) => TRet<Uint8Array>;
/**
 * Decrypts data using Cipher Block Chaining (CBC) mode with the Kuznyechik cipher.
 *
 * @param key Encryption key
 * @param data Data to be decrypted
 * @param iv Initialization vector
 */
export declare const decryptCBC: (key: TArg<Uint8Array>, data: TArg<Uint8Array>, iv: TArg<Uint8Array>) => TRet<Uint8Array>;