export = encrypt;
/**
 *
 * @param {object} param0
 * @param {string} param0.data
 * @param {string} [param0.encryptionKey]
 * @param {string} [param0.encryptionSalt]
 * @returns {string | null}
 */
declare function encrypt({ data, encryptionKey, encryptionSalt }: {
    data: string;
    encryptionKey?: string;
    encryptionSalt?: string;
}): string | null;