/**
 * Generates a random salt for key derivation.
 *
 * @param bytes - The number of bytes for the generated salt. Default is 16 bytes.
 * @returns The generated salt as a hexadecimal string.
 *
 * @example
 * const salt = generateRandomSalt();
 * console.log(salt); // Random hexadecimal salt
 */
export declare function generateRandomSalt(bytes?: number): string;